title
OpenDNS for Network Security

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{'title': 'OpenDNS for Network Security', 'heatmap': [{'end': 959.775, 'start': 938.5, 'weight': 1}, {'end': 1402.64, 'start': 1381.519, 'weight': 0.721}], 'summary': 'Delves into the significance of dns in networking, explaining how opendns can prevent malware, redirect and block users from accessing specific websites, and protect the network from security threats, while also covering the process of translating domain names to ip addresses, setting up opendns for network security, and discussing its usage, tips, and pricing.', 'chapters': [{'end': 361.284, 'segs': [{'end': 111.02, 'src': 'embed', 'start': 86.402, 'weight': 0, 'content': [{'end': 94.604, 'text': 'Well, what OpenDNS allows you to do is, instead of compromising, instead of attacking the computers on the network, what you can do is,', 'start': 86.402, 'duration': 8.202}, {'end': 106.174, 'text': "if somebody types in the domain name, let's say www.sex.com, OpenDNS will redirect them to an IP address of the OpenDNS server,", 'start': 94.604, 'duration': 11.57}, {'end': 109.818, 'text': "which will present them with a website that says you're blocked.", 'start': 106.174, 'duration': 3.644}, {'end': 111.02, 'text': 'you cannot go any further.', 'start': 109.818, 'duration': 1.202}], 'summary': 'Opendns redirects users from harmful websites, preventing access to malicious content.', 'duration': 24.618, 'max_score': 86.402, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/0Vd5UisrN1A/pics/0Vd5UisrN1A86402.jpg'}, {'end': 188.643, 'src': 'embed', 'start': 164.204, 'weight': 1, 'content': [{'end': 170.029, 'text': 'you can actually go into the OpenDNS control panel and block those websites.', 'start': 164.204, 'duration': 5.825}, {'end': 174.893, 'text': 'So OpenDNS not only secures you from things like viruses and such,', 'start': 170.149, 'duration': 4.744}, {'end': 180.757, 'text': 'but it can also help secure your internal network from all your employees going out to Facebook.com.', 'start': 174.893, 'duration': 5.864}, {'end': 182.539, 'text': "You're paying them 15, 20 bucks an hour.", 'start': 180.777, 'duration': 1.762}, {'end': 185.661, 'text': 'It would be really nice if they did their job.', 'start': 183.42, 'duration': 2.241}, {'end': 188.643, 'text': 'versus, you know, Facebook and all that.', 'start': 186.862, 'duration': 1.781}], 'summary': 'Opendns can block websites, securing internal network from employee distractions. it can help ensure productivity while saving on labor costs.', 'duration': 24.439, 'max_score': 164.204, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/0Vd5UisrN1A/pics/0Vd5UisrN1A164204.jpg'}, {'end': 334.321, 'src': 'embed', 'start': 287.717, 'weight': 2, 'content': [{'end': 294.844, 'text': "Well, if you've configured your DNS to not allow that to happen, when they try to go to that weird little domain name,", 'start': 287.717, 'duration': 7.127}, {'end': 303.132, 'text': "to phone home and pull malware onto your computer, they'll get redirected to the open DNS servers and it won't happen.", 'start': 294.844, 'duration': 8.288}, {'end': 308.076, 'text': 'So DNS is a fundamental component of all networking.', 'start': 303.532, 'duration': 4.544}, {'end': 312.44, 'text': 'Again, not just web browsing, but email, basic stuff.', 'start': 308.457, 'duration': 3.983}, {'end': 320.387, 'text': 'So again, as I talked about in the hacking class, if you can compromise DNS, you can just make a mess of an entire network.', 'start': 312.941, 'duration': 7.446}, {'end': 323.33, 'text': 'When you play with DNS.', 'start': 321.148, 'duration': 2.182}, {'end': 328.195, 'text': "you're not talking about, you know, messing with one computer or two computers or the server.", 'start': 323.33, 'duration': 4.865}, {'end': 334.321, 'text': 'you can either take down or protect an entire network using DNS.', 'start': 328.195, 'duration': 6.126}], 'summary': 'Dns is crucial in network security. compromising it can affect entire networks.', 'duration': 46.604, 'max_score': 287.717, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/0Vd5UisrN1A/pics/0Vd5UisrN1A287717.jpg'}], 'start': 5.407, 'title': 'Opendns for network security', 'summary': 'Discusses the significance of dns in networking, explaining how opendns can be used to redirect and block users from accessing specific websites, preventing malware from phoning home, and protecting the network from potential security threats.', 'chapters': [{'end': 361.284, 'start': 5.407, 'title': 'Opendns for network security', 'summary': 'Discusses the significance of dns in networking, explaining how opendns can be used to redirect and block users from accessing specific websites, preventing malware from phoning home, and protecting the network from potential security threats.', 'duration': 355.877, 'highlights': ['OpenDNS can redirect users to a block page if they attempt to access restricted websites, such as porn sites, thus preventing them from reaching the actual site. OpenDNS redirects users attempting to access restricted websites to a block page, effectively preventing them from reaching the actual site, providing network security.', 'OpenDNS allows administrators to block specific websites, such as social media platforms, effectively controlling and securing network usage. OpenDNS provides the capability to block specific websites, enabling administrators to control and secure network usage, such as blocking social media platforms.', 'DNS plays a crucial role in network security, as compromising DNS can lead to significant security vulnerabilities, affecting the entire network. Compromising DNS can have severe security implications, potentially impacting the entire network, highlighting the critical role of DNS in network security.', 'DNS not only affects web browsing but also impacts email and other basic network functions, making it a fundamental component of networking. DNS impacts various network functions beyond web browsing, including email and basic operations, emphasizing its fundamental role in networking.', "OpenDNS prevents malware from 'phoning home' by redirecting attempts to communicate with servers on the internet, effectively blocking the spread of viruses. OpenDNS redirects attempts by malware to 'phone home' to communicate with internet servers, effectively blocking the spread of viruses and malware."]}], 'duration': 355.877, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/0Vd5UisrN1A/pics/0Vd5UisrN1A5407.jpg', 'highlights': ['OpenDNS can redirect users to a block page if they attempt to access restricted websites, such as porn sites, thus preventing them from reaching the actual site.', 'OpenDNS allows administrators to block specific websites, such as social media platforms, effectively controlling and securing network usage.', 'Compromising DNS can have severe security implications, potentially impacting the entire network, highlighting the critical role of DNS in network security.', 'DNS impacts various network functions beyond web browsing, including email and basic operations, emphasizing its fundamental role in networking.', "OpenDNS prevents malware from 'phoning home' by redirecting attempts to communicate with servers on the internet, effectively blocking the spread of viruses."]}, {'end': 592.561, 'segs': [{'end': 521.068, 'src': 'embed', 'start': 361.785, 'weight': 0, 'content': [{'end': 369.657, 'text': "So as we talked about before, if you're sitting down at your computer right here, and you want to go to cnn.com.", 'start': 361.785, 'duration': 7.872}, {'end': 371.698, 'text': 'So you want to go to a website.', 'start': 370.358, 'duration': 1.34}, {'end': 380.279, 'text': "Well, remember, computers don't care about things like cnn.com, yahoo.com, msn.com.", 'start': 371.738, 'duration': 8.541}, {'end': 383.36, 'text': "That doesn't mean a darn thing to a computer.", 'start': 380.579, 'duration': 2.781}, {'end': 395.179, 'text': 'The only thing the computer really cares about is IP addresses, 208.6.55.1, 192.168.1.1, 10.0.1.10.', 'start': 383.68, 'duration': 11.499}, {'end': 397.163, 'text': "That's what the computer cares about.", 'start': 395.182, 'duration': 1.981}, {'end': 400.244, 'text': "The computer really doesn't care about cnn.com.", 'start': 397.183, 'duration': 3.061}, {'end': 412.369, 'text': 'So what happens is when you want to go to cnn.com, your computer communicates with something called a DNS server, a domain name services server.', 'start': 400.724, 'duration': 11.645}, {'end': 423.012, 'text': 'In the domain name services server, it will say that cnn.com equals 208.55.66.1.', 'start': 412.949, 'duration': 10.063}, {'end': 432.454, 'text': 'One, it will then return this IP address to your computer, 208.55.66.1.', 'start': 423.013, 'duration': 9.441}, {'end': 438.817, 'text': 'Your computer will then use that IP address to go out onto the internet,', 'start': 432.455, 'duration': 6.362}, {'end': 446.921, 'text': 'find the CNN.com server and then ask for the website from the cnn.com server.', 'start': 438.817, 'duration': 8.104}, {'end': 450.563, 'text': 'So your computer talks to a DNS server.', 'start': 446.981, 'duration': 3.582}, {'end': 453.405, 'text': 'The DNS server returns the IP address.', 'start': 451.224, 'duration': 2.181}, {'end': 459.149, 'text': 'Your computer then uses that IP address to go out onto the internet to communicate with the cnn.com server.', 'start': 453.485, 'duration': 5.664}, {'end': 464.272, 'text': 'And then the cnn.com server gives you the website.', 'start': 459.449, 'duration': 4.823}, {'end': 467.394, 'text': 'So this is how this works.', 'start': 464.552, 'duration': 2.842}, {'end': 478.767, 'text': 'Now, as we talked about in the hacking DNS class, Generally, there are two places where this domain name mapping happens.', 'start': 467.834, 'duration': 10.933}, {'end': 483.928, 'text': "One is what's called the hosts file that sits on the computer itself.", 'start': 479.147, 'duration': 4.781}, {'end': 487.789, 'text': "So if you have a Windows computer, there's something called the hosts file.", 'start': 484.348, 'duration': 3.441}, {'end': 493.931, 'text': "You can go in there, and you'll see it'll give you an IP address, a space, and then a domain name.", 'start': 488.27, 'duration': 5.661}, {'end': 500.013, 'text': "So that's the first place that the computer looks to to map domain names to IP addresses.", 'start': 494.351, 'duration': 5.662}, {'end': 508.319, 'text': 'After that, what will happen is in its IP configuration, it will have a primary and secondary DNS server.', 'start': 500.533, 'duration': 7.786}, {'end': 518.187, 'text': 'So those are IP addresses that state, if you cannot find a domain name in the hosts file, then go to this DNS server.', 'start': 508.78, 'duration': 9.407}, {'end': 521.068, 'text': 'to try to resolve the domain name.', 'start': 518.447, 'duration': 2.621}], 'summary': 'Computers use dns servers to convert domain names to ip addresses for internet communication.', 'duration': 159.283, 'max_score': 361.785, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/0Vd5UisrN1A/pics/0Vd5UisrN1A361785.jpg'}, {'end': 605.055, 'src': 'embed', 'start': 573.822, 'weight': 3, 'content': [{'end': 578.607, 'text': 'it will either allow you or not allow you to go to different domains.', 'start': 573.822, 'duration': 4.785}, {'end': 583.592, 'text': "So if you're allowed to go to a domain, it will give you the proper IP address.", 'start': 578.987, 'duration': 4.605}, {'end': 586.014, 'text': "And if you're not allowed to go the domain,", 'start': 584.052, 'duration': 1.962}, {'end': 592.561, 'text': "it will give you a different IP address that will basically not allow you to get to the domain you're trying to go to.", 'start': 586.014, 'duration': 6.547}, {'end': 605.055, 'text': 'So the easiest way to set this up so that it protects your entire network is you plug in the OpenDNS DNS server numbers into your router.', 'start': 593.101, 'duration': 11.954}], 'summary': 'Opendns allows access to authorized domains and blocks unauthorized ones by providing corresponding ip addresses. it can be set up to protect the entire network by entering opendns dns server numbers into the router.', 'duration': 31.233, 'max_score': 573.822, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/0Vd5UisrN1A/pics/0Vd5UisrN1A573822.jpg'}], 'start': 361.785, 'title': 'Dns and ip communication', 'summary': 'Covers the process of translating domain names to ip addresses using dns servers, emphasizing the reliance on ip addresses and the role of hosts file, primary and secondary dns servers, with examples and possibilities of changing dns servers.', 'chapters': [{'end': 464.272, 'start': 361.785, 'title': 'Understanding dns and ip addresses', 'summary': "Explains how computers communicate with websites using dns servers to translate domain names into ip addresses, with examples of cnn.com being translated to 208.55.66.1, emphasizing the computer's reliance on ip addresses over domain names.", 'duration': 102.487, 'highlights': ['Computers rely on IP addresses rather than domain names like cnn.com, with examples of IP addresses such as 208.6.55.1 and 192.168.1.1.', 'The process of computer communication with a DNS server, which translates domain names to IP addresses, illustrated by the example of cnn.com being translated to 208.55.66.1.', 'Explanation of how the computer uses the obtained IP address to communicate with the desired server, such as cnn.com, to access the website.']}, {'end': 592.561, 'start': 464.552, 'title': 'Dns server and domain name resolution', 'summary': 'Explains the process of domain name resolution, highlighting the role of hosts file, primary and secondary dns servers, and the possibility of changing dns servers to control access to different domains.', 'duration': 128.009, 'highlights': ['The primary and secondary DNS server IP addresses are used if the domain name is not found in the hosts file, allowing for domain name resolution (e.g. sex.com or facebook.com).', 'Changing the DNS server can control access to different domains by providing the proper or different IP address, allowing or denying access to specific domains.', 'The hosts file on the computer serves as the first place for domain name mapping, containing IP addresses and corresponding domain names.']}], 'duration': 230.776, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/0Vd5UisrN1A/pics/0Vd5UisrN1A361785.jpg', 'highlights': ['Computers rely on IP addresses rather than domain names like cnn.com, with examples of IP addresses such as 208.6.55.1 and 192.168.1.1.', 'The process of computer communication with a DNS server, which translates domain names to IP addresses, illustrated by the example of cnn.com being translated to 208.55.66.1.', 'The primary and secondary DNS server IP addresses are used if the domain name is not found in the hosts file, allowing for domain name resolution (e.g. sex.com or facebook.com).', 'Changing the DNS server can control access to different domains by providing the proper or different IP address, allowing or denying access to specific domains.', 'The hosts file on the computer serves as the first place for domain name mapping, containing IP addresses and corresponding domain names.', 'Explanation of how the computer uses the obtained IP address to communicate with the desired server, such as cnn.com, to access the website.']}, {'end': 1000.077, 'segs': [{'end': 655.185, 'src': 'embed', 'start': 593.101, 'weight': 3, 'content': [{'end': 605.055, 'text': 'So the easiest way to set this up so that it protects your entire network is you plug in the OpenDNS DNS server numbers into your router.', 'start': 593.101, 'duration': 11.954}, {'end': 607.798, 'text': 'So you have your computer here like we talked about before.', 'start': 605.316, 'duration': 2.482}, {'end': 616.086, 'text': "Then you have your router that's on the internet, and then you have their DNS servers that are sitting off in their server farm.", 'start': 608.579, 'duration': 7.507}, {'end': 625.514, 'text': 'So what you do is in your router, you put in their DNS servers, their primary and secondary DNS servers.', 'start': 616.586, 'duration': 8.928}, {'end': 636.682, 'text': "I don't know them off the top of my head, but let's say 208.55.66.1 and 208.55.66.2.", 'start': 625.534, 'duration': 11.148}, {'end': 640.067, 'text': 'that gets plugged in to your router.', 'start': 636.683, 'duration': 3.384}, {'end': 646.795, 'text': "It's also important that it gets plugged into what's called your DHCP server.", 'start': 640.628, 'duration': 6.167}, {'end': 655.185, 'text': 'So what will happen is when your computer asks for an IP address from the DHCP server,', 'start': 647.296, 'duration': 7.889}], 'summary': 'Set up opendns servers (e.g. 208.55.66.1 and 208.55.66.2) in router and dhcp server to protect your entire network.', 'duration': 62.084, 'max_score': 593.101, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/0Vd5UisrN1A/pics/0Vd5UisrN1A593101.jpg'}, {'end': 715.103, 'src': 'embed', 'start': 682.781, 'weight': 5, 'content': [{'end': 691.486, 'text': 'Well, what OpenDNS does is in the control panel, you can go to a little website and open up the control panel on the website.', 'start': 682.781, 'duration': 8.705}, {'end': 695.609, 'text': 'And you plug in what your external IP address is.', 'start': 691.987, 'duration': 3.622}, {'end': 699.532, 'text': 'So the external IP address is your IP address before the internet.', 'start': 695.929, 'duration': 3.603}, {'end': 704.915, 'text': "So I don't know, 197.55.66.1.", 'start': 699.972, 'duration': 4.943}, {'end': 710.539, 'text': 'well, what happens is you plug that in 66.55.1.', 'start': 704.915, 'duration': 5.624}, {'end': 715.103, 'text': 'you plug that in to the open DNS control panel.', 'start': 710.539, 'duration': 4.564}], 'summary': 'Opendns allows users to input their external ip address in the control panel on the website.', 'duration': 32.322, 'max_score': 682.781, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/0Vd5UisrN1A/pics/0Vd5UisrN1A682781.jpg'}, {'end': 775.493, 'src': 'embed', 'start': 745.602, 'weight': 0, 'content': [{'end': 746.802, 'text': 'they will get this.', 'start': 745.602, 'duration': 1.2}, {'end': 748.823, 'text': 'you are not allowed because of OpenDNS.', 'start': 746.802, 'duration': 2.021}, {'end': 757.047, 'text': 'If there is another office on the internet down here and they have an IP address of 207.66.55.1,', 'start': 749.443, 'duration': 7.604}, {'end': 769.051, 'text': "so they're at a different IP address when they go to the OpenDNS servers, they will be given a different security policy for their domain services.", 'start': 757.047, 'duration': 12.004}, {'end': 775.493, 'text': 'so they may be allowed to go to Facebook.com, they may be allowed to go to Gambling.com, et cetera, et cetera, et cetera.', 'start': 769.051, 'duration': 6.442}], 'summary': 'Opendns assigns different security policies based on ip addresses, allowing access to specific websites.', 'duration': 29.891, 'max_score': 745.602, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/0Vd5UisrN1A/pics/0Vd5UisrN1A745602.jpg'}, {'end': 883.65, 'src': 'embed', 'start': 853.859, 'weight': 1, 'content': [{'end': 858.38, 'text': 'And when you go to it, basically you just get this web page that says you are not allowed to go here.', 'start': 853.859, 'duration': 4.521}, {'end': 860.821, 'text': "That's pretty simple.", 'start': 858.4, 'duration': 2.421}, {'end': 865.106, 'text': 'What makes OpenDNS really, really nice, though?', 'start': 861.505, 'duration': 3.601}, {'end': 867.386, 'text': "is that what we're going to show you in a minute?", 'start': 865.106, 'duration': 2.28}, {'end': 876.168, 'text': "is they have a control panel that allows you to say what sites you do or don't want your users to see.", 'start': 867.386, 'duration': 8.782}, {'end': 883.65, 'text': "So you can make it really really restrictive where they can't see porn sites or gambling sites or Facebook sites, social networking, you know,", 'start': 876.508, 'duration': 7.142}], 'summary': 'Opendns provides control panel to restrict user access to specific sites, such as porn, gambling, and social networking.', 'duration': 29.791, 'max_score': 853.859, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/0Vd5UisrN1A/pics/0Vd5UisrN1A853859.jpg'}, {'end': 980.707, 'src': 'heatmap', 'start': 938.5, 'weight': 2, 'content': [{'end': 942.342, 'text': "it just, it just protects everything one shot, it's, it's very nice.", 'start': 938.5, 'duration': 3.842}, {'end': 952.51, 'text': 'So here we are at the OpenDNS dashboard.', 'start': 949.508, 'duration': 3.002}, {'end': 959.775, 'text': "So OpenDNS dashboard is basically just another web GUI interface that you'll go to, another web control panel.", 'start': 952.65, 'duration': 7.125}, {'end': 966.099, 'text': 'You go to www.opendns.com, and you create an account with them.', 'start': 960.655, 'duration': 5.444}, {'end': 971.702, 'text': "And then once you're done creating the account, you'll be able to log in and see a dashboard that looks like this.", 'start': 966.739, 'duration': 4.963}, {'end': 975.725, 'text': 'OpenDNS has a couple of different service types.', 'start': 972.323, 'duration': 3.402}, {'end': 977.086, 'text': 'So they have the free version.', 'start': 975.825, 'duration': 1.261}, {'end': 980.707, 'text': 'The small business version and then the enterprise version.', 'start': 978.105, 'duration': 2.602}], 'summary': 'Opendns offers free, small business, and enterprise versions with an easy-to-use web gui interface.', 'duration': 42.207, 'max_score': 938.5, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/0Vd5UisrN1A/pics/0Vd5UisrN1A938500.jpg'}], 'start': 593.101, 'title': 'Setting up and benefits of opendns', 'summary': 'Discusses setting up opendns by configuring the router with specific dns server numbers and explains how it assigns security policies based on ip addresses, along with the benefits of controlling user access to specific websites and its impact on network security.', 'chapters': [{'end': 715.103, 'start': 593.101, 'title': 'Setting up opendns for network protection', 'summary': 'Discusses setting up opendns to protect the entire network by configuring the router with opendns dns server numbers, such as 208.55.66.1 and 208.55.66.2, and ensuring that the dhcp server assigns these dns servers to connected devices.', 'duration': 122.002, 'highlights': ['Configuring the router with OpenDNS DNS server numbers, such as 208.55.66.1 and 208.55.66.2, to protect the entire network.', 'Ensuring that the DHCP server assigns the configured OpenDNS DNS servers, such as 208.55.66.1 and 208.55.66.2, to connected devices.', 'Plugging in the external IP address, such as 197.55.66.1, into the OpenDNS control panel to enable network protection.']}, {'end': 1000.077, 'start': 715.103, 'title': 'Opendns: how it works and benefits', 'summary': 'Explains how opendns works, including how it assigns security policies based on ip addresses, and the benefits of using opendns, such as the ability to control user access to specific websites and its impact on network security.', 'duration': 284.974, 'highlights': ['OpenDNS assigns different security policies based on the IP address of the user, allowing customized access to websites. By assigning different security policies based on IP addresses, OpenDNS allows for customized access control, enhancing network security and user management.', 'OpenDNS allows users to control access to specific websites, providing options for restrictive or lenient browsing policies. OpenDNS offers a control panel that enables users to specify which sites employees can or cannot access, providing flexibility in defining browsing policies for increased productivity and security.', 'OpenDNS offers different service types, including free, small business, and enterprise versions, catering to various organizational needs. OpenDNS provides different service types, such as free, small business, and enterprise versions, offering flexibility to meet the diverse needs of organizations in managing their network security and access control.']}], 'duration': 406.976, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/0Vd5UisrN1A/pics/0Vd5UisrN1A593101.jpg', 'highlights': ['OpenDNS assigns different security policies based on the IP address of the user, allowing customized access to websites.', 'OpenDNS allows users to control access to specific websites, providing options for restrictive or lenient browsing policies.', 'OpenDNS provides different service types, such as free, small business, and enterprise versions, offering flexibility to meet the diverse needs of organizations in managing their network security and access control.', 'Configuring the router with OpenDNS DNS server numbers, such as 208.55.66.1 and 208.55.66.2, to protect the entire network.', 'Ensuring that the DHCP server assigns the configured OpenDNS DNS servers, such as 208.55.66.1 and 208.55.66.2, to connected devices.', 'Plugging in the external IP address, such as 197.55.66.1, into the OpenDNS control panel to enable network protection.']}, {'end': 1503.259, 'segs': [{'end': 1080.283, 'src': 'embed', 'start': 1052.949, 'weight': 1, 'content': [{'end': 1058.091, 'text': "I have blocked all of these sex sites because there's no reason any of my guys need to be seeing porn at the middle of the day.", 'start': 1052.949, 'duration': 5.142}, {'end': 1066.414, 'text': 'Now again, as we talked about a little bit earlier, you can configure OpenDNS to block any number of different types of sites.', 'start': 1058.611, 'duration': 7.803}, {'end': 1068.454, 'text': 'So you could block sex.', 'start': 1066.534, 'duration': 1.92}, {'end': 1069.635, 'text': 'You could block gambling.', 'start': 1068.495, 'duration': 1.14}, {'end': 1072.476, 'text': 'You can block social networking.', 'start': 1069.655, 'duration': 2.821}, {'end': 1072.916, 'text': "I don't know.", 'start': 1072.596, 'duration': 0.32}, {'end': 1080.283, 'text': 'If you work at the Larry Flint, the Hustler Club, maybe you want your people to be able to see porn sites,', 'start': 1072.956, 'duration': 7.327}], 'summary': 'Blocked sex, gambling, and social networking sites using opendns.', 'duration': 27.334, 'max_score': 1052.949, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/0Vd5UisrN1A/pics/0Vd5UisrN1A1052949.jpg'}, {'end': 1145.888, 'src': 'embed', 'start': 1098.412, 'weight': 0, 'content': [{'end': 1102.394, 'text': 'So to set this up, we just go back to the OpenDNS settings page.', 'start': 1098.412, 'duration': 3.982}, {'end': 1106.659, 'text': "Now, I've already set up our office here.", 'start': 1103.177, 'duration': 3.482}, {'end': 1108.02, 'text': "So I can't reset it up again.", 'start': 1106.7, 'duration': 1.32}, {'end': 1111.463, 'text': "But you'll see it says a label, 855 North Howard Street.", 'start': 1108.421, 'duration': 3.042}, {'end': 1114.205, 'text': 'And this says our external IP address.', 'start': 1111.583, 'duration': 2.622}, {'end': 1120.989, 'text': 'So I have configured our router here to use their DNS servers.', 'start': 1114.365, 'duration': 6.624}, {'end': 1127.834, 'text': 'So when my computer goes to their DNS server, their DNS server will be able to read my external IP address.', 'start': 1121.23, 'duration': 6.604}, {'end': 1134.503, 'text': 'And then based upon this IP address, they will then present me with the settings that I have configured.', 'start': 1127.894, 'duration': 6.609}, {'end': 1143.046, 'text': 'If I want to create a new network, basically I just tell it a few bits of information here and then do Add to this network.', 'start': 1135.064, 'duration': 7.982}, {'end': 1145.888, 'text': "This network has already been added, so we can't add it.", 'start': 1143.387, 'duration': 2.501}], 'summary': 'Configured router to use opendns servers for office network, unable to add new network', 'duration': 47.476, 'max_score': 1098.412, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/0Vd5UisrN1A/pics/0Vd5UisrN1A1098412.jpg'}, {'end': 1261.766, 'src': 'embed', 'start': 1236.191, 'weight': 5, 'content': [{'end': 1242.653, 'text': 'because sometimes your employees do need to do things you may not realize that they need to do.', 'start': 1236.191, 'duration': 6.462}, {'end': 1248.374, 'text': 'Like some people actually do use Facebook for real marketing and real business.', 'start': 1243.273, 'duration': 5.101}, {'end': 1251.034, 'text': 'So if you shut them off of Facebook, you may..', 'start': 1248.414, 'duration': 2.62}, {'end': 1255.561, 'text': 'come to have problems, e-commerce shopping.', 'start': 1252.199, 'duration': 3.362}, {'end': 1261.766, 'text': "You may say, well, I don't want my people going onto Amazon or eBay because they're just wasting time.", 'start': 1256.022, 'duration': 5.744}], 'summary': 'Employees use facebook for real marketing and business. restrictions may hinder e-commerce and productivity.', 'duration': 25.575, 'max_score': 1236.191, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/0Vd5UisrN1A/pics/0Vd5UisrN1A1236191.jpg'}, {'end': 1405.362, 'src': 'heatmap', 'start': 1366.815, 'weight': 6, 'content': [{'end': 1371.236, 'text': 'Remember, DNS is the cornerstone to your networking.', 'start': 1366.815, 'duration': 4.421}, {'end': 1376.117, 'text': "If you screw up DNS, you're going to screw up your entire network.", 'start': 1371.596, 'duration': 4.521}, {'end': 1381.399, 'text': "So if you don't understand TCP IP, you don't understand networking, this is probably over your head.", 'start': 1376.157, 'duration': 5.242}, {'end': 1384.5, 'text': 'Hire somebody at $100 an hour to figure this out for you.', 'start': 1381.519, 'duration': 2.981}, {'end': 1389.721, 'text': 'But this is basically how OpenDNS works and how you configure everything.', 'start': 1384.64, 'duration': 5.081}, {'end': 1399.538, 'text': "So that's the class on OpenDNS for network security.", 'start': 1396.656, 'duration': 2.882}, {'end': 1402.64, 'text': "Like I say, I think it's a wonderful, wonderful tool.", 'start': 1400.459, 'duration': 2.181}, {'end': 1405.362, 'text': 'We have it working on our little router here.', 'start': 1402.94, 'duration': 2.422}], 'summary': 'Dns is crucial to networking; opendns is a valuable tool for network security.', 'duration': 38.547, 'max_score': 1366.815, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/0Vd5UisrN1A/pics/0Vd5UisrN1A1366815.jpg'}, {'end': 1462.591, 'src': 'embed', 'start': 1434.487, 'weight': 2, 'content': [{'end': 1438.631, 'text': 'Well, the nice part using OpenDNS is we plug it into the internet.', 'start': 1434.487, 'duration': 4.144}, {'end': 1442.014, 'text': 'Our entire DNS is protected.', 'start': 1439.472, 'duration': 2.542}, {'end': 1447.539, 'text': "So when those little viruses and malware and all that try to phone home, they're not able to.", 'start': 1442.134, 'duration': 5.405}, {'end': 1451.342, 'text': 'They pull back a bad IP address and then they fail out.', 'start': 1447.639, 'duration': 3.703}, {'end': 1459.028, 'text': "It means it's a lot easier for us to be able to protect the systems and clean the systems up.", 'start': 1451.782, 'duration': 7.246}, {'end': 1462.591, 'text': "They're not reinstalling viruses as fast as we are uninstalling them.", 'start': 1459.048, 'duration': 3.543}], 'summary': 'Opendns protects entire dns, blocking viruses and malware from phoning home, resulting in easier system protection and cleanup.', 'duration': 28.104, 'max_score': 1434.487, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/0Vd5UisrN1A/pics/0Vd5UisrN1A1434487.jpg'}], 'start': 1000.157, 'title': 'Opendns for network security', 'summary': 'Discusses configuring opendns for network security, including blocking specific websites and categories, setting up dns protection, and understanding the potential impact on employee productivity.', 'chapters': [{'end': 1145.888, 'start': 1000.157, 'title': 'Opendns settings and configuration', 'summary': "Discusses setting up and configuring opendns to block specific websites, such as porn and gambling sites, in a business environment, emphasizing the ability to restrict user access and customize settings based on the organization's needs.", 'duration': 145.731, 'highlights': ['OpenDNS allows for blocking specific types of websites, such as porn, gambling, and social networking, to restrict user access in a business environment.', 'Configuring OpenDNS involves setting up the office location and external IP address to customize DNS server settings for the network.', 'The chapter also highlights the ability to create and configure new networks with specific settings to control user access and restrict website access based on individual network requirements.']}, {'end': 1503.259, 'start': 1146.448, 'title': 'Opendns network security', 'summary': 'Discusses the configuration options of opendns for network security, including blocking specific websites and categories, setting up dns protection to prevent malware and botnets, and the potential impact on employee productivity. it emphasizes the importance of understanding networking and dns to effectively implement opendns.', 'duration': 356.811, 'highlights': ['Configuring OpenDNS to block specific websites and categories The speaker discusses the ability to customize the websites and categories that can be blocked using OpenDNS, such as adult video sites, illegal activities, social networking, and gaming, to maintain internal system security and minimize the risk of legal issues.', 'Setting up DNS protection against malware and botnets The importance of protecting the entire DNS using OpenDNS to prevent viruses and malware from phoning home and infecting the network, making it easier to clean and protect systems from malware, emphasizing the impact on network security and efficiency.', 'Impact on employee productivity and potential issues with blocking necessary websites The potential impact of blocking certain websites on employee productivity, such as the unintended consequences of blocking essential e-commerce websites needed for procurement, and the need for careful consideration when implementing website restrictions to avoid hindering legitimate business activities.', 'Emphasizing the significance of understanding networking and DNS for effective implementation of OpenDNS Highlighting the critical role of DNS in networking and the potential consequences of misconfiguring DNS, emphasizing the need for a strong understanding of TCP/IP and networking to effectively utilize OpenDNS and avoid network disruptions.']}], 'duration': 503.102, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/0Vd5UisrN1A/pics/0Vd5UisrN1A1000157.jpg', 'highlights': ['Configuring OpenDNS involves setting up the office location and external IP address to customize DNS server settings for the network.', 'Configuring OpenDNS to block specific websites and categories The speaker discusses the ability to customize the websites and categories that can be blocked using OpenDNS, such as adult video sites, illegal activities, social networking, and gaming, to maintain internal system security and minimize the risk of legal issues.', 'Setting up DNS protection against malware and botnets The importance of protecting the entire DNS using OpenDNS to prevent viruses and malware from phoning home and infecting the network, making it easier to clean and protect systems from malware, emphasizing the impact on network security and efficiency.', 'OpenDNS allows for blocking specific types of websites, such as porn, gambling, and social networking, to restrict user access in a business environment.', 'The chapter also highlights the ability to create and configure new networks with specific settings to control user access and restrict website access based on individual network requirements.', 'Impact on employee productivity and potential issues with blocking necessary websites The potential impact of blocking certain websites on employee productivity, such as the unintended consequences of blocking essential e-commerce websites needed for procurement, and the need for careful consideration when implementing website restrictions to avoid hindering legitimate business activities.', 'Emphasizing the significance of understanding networking and DNS for effective implementation of OpenDNS Highlighting the critical role of DNS in networking and the potential consequences of misconfiguring DNS, emphasizing the need for a strong understanding of TCP/IP and networking to effectively utilize OpenDNS and avoid network disruptions.']}, {'end': 1702.474, 'segs': [{'end': 1562.156, 'src': 'embed', 'start': 1503.679, 'weight': 0, 'content': [{'end': 1514.808, 'text': "So in your office, if you're having a problem with people going to Facebook or MySpace or AOL or any of this by using OpenDNS,", 'start': 1503.679, 'duration': 11.129}, {'end': 1516.809, 'text': 'you can just shut it down.', 'start': 1514.808, 'duration': 2.001}, {'end': 1521.312, 'text': 'They simply cannot get to it anymore.', 'start': 1517.089, 'duration': 4.223}, {'end': 1524.215, 'text': "So hopefully they're getting back to work.", 'start': 1521.412, 'duration': 2.803}, {'end': 1527.79, 'text': 'But this was a class on OpenDNS.', 'start': 1525.649, 'duration': 2.141}, {'end': 1532.673, 'text': "Like I say, it's just absolutely wonderful.", 'start': 1527.83, 'duration': 4.843}, {'end': 1541.898, 'text': 'The one thing I will remind you is again if you do not have a static IP address for your network,', 'start': 1532.813, 'duration': 9.085}, {'end': 1552.647, 'text': 'if you have not purchased a static IP address from your ISP, remember to install that little dynamic IP address application from OpenDNS.', 'start': 1541.898, 'duration': 10.749}, {'end': 1562.156, 'text': 'what that does is when you install it on your computer every once in a while, it will tell OpenDNS what your current external IP address is.', 'start': 1552.647, 'duration': 9.509}], 'summary': 'Opendns can block access to facebook, myspace, and aol, improving productivity in the office.', 'duration': 58.477, 'max_score': 1503.679, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/0Vd5UisrN1A/pics/0Vd5UisrN1A1503679.jpg'}, {'end': 1653.441, 'src': 'embed', 'start': 1607.31, 'weight': 4, 'content': [{'end': 1610.392, 'text': 'They have three pricing strategies for OpenDNS.', 'start': 1607.31, 'duration': 3.082}, {'end': 1614.375, 'text': "They have a free version that's fine for commercial use.", 'start': 1610.692, 'duration': 3.683}, {'end': 1618.098, 'text': 'Basically, it allows you to use it in like three networks.', 'start': 1615.075, 'duration': 3.023}, {'end': 1623.762, 'text': 'You can have 25 whitelisted or blacklisted sites, and it gives you a bunch of other stuff.', 'start': 1618.518, 'duration': 5.244}, {'end': 1625.723, 'text': 'We use the free service.', 'start': 1624.162, 'duration': 1.561}, {'end': 1628.045, 'text': 'The free service just works fine for us.', 'start': 1625.783, 'duration': 2.262}, {'end': 1630.066, 'text': 'I see no reason to pay for it.', 'start': 1628.365, 'duration': 1.701}, {'end': 1633.989, 'text': 'If you want to go up another level, they do have a normal business service.', 'start': 1630.427, 'duration': 3.562}, {'end': 1637.252, 'text': 'It costs you $5 per user per year.', 'start': 1634.049, 'duration': 3.203}, {'end': 1639.533, 'text': 'It gives you more options.', 'start': 1638.372, 'duration': 1.161}, {'end': 1642.415, 'text': "Again, I'm telling you as a computer professional,", 'start': 1639.733, 'duration': 2.682}, {'end': 1647.899, 'text': 'as somebody who deals with small businesses and security all the time $5 a year to protect your DNS is great.', 'start': 1642.415, 'duration': 5.484}, {'end': 1650.42, 'text': 'cheap. that is like nothing.', 'start': 1649, 'duration': 1.42}, {'end': 1653.441, 'text': "that's like a penny an hour per employee or less.", 'start': 1650.42, 'duration': 3.021}], 'summary': 'Opendns offers three pricing strategies, including a free version for commercial use allowing up to three networks and 25 whitelisted or blacklisted sites. the normal business service costs $5 per user per year and is recommended for small businesses for its affordability.', 'duration': 46.131, 'max_score': 1607.31, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/0Vd5UisrN1A/pics/0Vd5UisrN1A1607310.jpg'}], 'start': 1503.679, 'title': 'Opendns usage, tips, and pricing', 'summary': 'Covers the benefits of using opendns for website restrictions, the importance of static ip addresses, and the need for dynamic ip address application. it also discusses opendns pricing strategies, including a free version and a $5 per user per year business service, emphasizing affordability for small businesses.', 'chapters': [{'end': 1607.31, 'start': 1503.679, 'title': 'Opendns usage and tips', 'summary': 'Discusses the benefits of using opendns to restrict access to certain websites in the office, the importance of a static ip address, and the need to install a dynamic ip address application from opendns to maintain security policies effectively.', 'duration': 103.631, 'highlights': ['Installing OpenDNS can restrict access to specific websites, improving productivity in the office.', 'The importance of having a static IP address from the ISP to ensure seamless functionality with OpenDNS.', "Installing the dynamic IP address application from OpenDNS is crucial for maintaining security policies and ensuring that the servers recognize the user's account and IP address.", 'Regular communication of the external IP address to OpenDNS is necessary for effective functioning and security policy enforcement.']}, {'end': 1702.474, 'start': 1607.31, 'title': 'Opendns pricing strategies', 'summary': 'Discusses opendns pricing strategies, including a free version for commercial use with limitations, a $5 per user per year business service with added options, and emphasizes the affordability of both options for small businesses.', 'duration': 95.164, 'highlights': ["The free version of OpenDNS is suitable for commercial use, allowing usage in three networks, with 25 whitelisted or blacklisted sites, and is endorsed as sufficient for the speaker's needs.", 'The $5 per user per year business service is highlighted as a great deal for small businesses, emphasizing the low cost of protection at approximately a penny per hour per employee.', "The speaker stresses that both the free and business versions of OpenDNS are affordable, with the $5 per user per year business service being described as a 'no-brainer' due to its cost-effectiveness."]}], 'duration': 198.795, 'thumbnail': 'https://coursnap.oss-ap-southeast-1.aliyuncs.com/video-capture/0Vd5UisrN1A/pics/0Vd5UisrN1A1503679.jpg', 'highlights': ['Installing OpenDNS can restrict access to specific websites, improving office productivity.', 'Having a static IP address from the ISP ensures seamless functionality with OpenDNS.', 'Installing the dynamic IP address application from OpenDNS is crucial for maintaining security policies.', 'Regular communication of the external IP address to OpenDNS is necessary for effective functioning and security policy enforcement.', 'The free version of OpenDNS is suitable for commercial use, allowing usage in three networks, with 25 whitelisted or blacklisted sites.', 'The $5 per user per year business service is highlighted as a great deal for small businesses, emphasizing the low cost of protection at approximately a penny per hour per employee.']}], 'highlights': ['OpenDNS can redirect users to a block page if they attempt to access restricted websites, such as porn sites, thus preventing them from reaching the actual site.', 'OpenDNS allows administrators to block specific websites, such as social media platforms, effectively controlling and securing network usage.', 'OpenDNS assigns different security policies based on the IP address of the user, allowing customized access to websites.', 'OpenDNS provides different service types, such as free, small business, and enterprise versions, offering flexibility to meet the diverse needs of organizations in managing their network security and access control.', 'Configuring OpenDNS involves setting up the office location and external IP address to customize DNS server settings for the network.', 'Installing OpenDNS can restrict access to specific websites, improving office productivity.', 'The $5 per user per year business service is highlighted as a great deal for small businesses, emphasizing the low cost of protection at approximately a penny per hour per employee.', 'Computers rely on IP addresses rather than domain names like cnn.com, with examples of IP addresses such as 208.6.55.1 and 192.168.1.1.', 'The process of computer communication with a DNS server, which translates domain names to IP addresses, illustrated by the example of cnn.com being translated to 208.55.66.1.', "OpenDNS prevents malware from 'phoning home' by redirecting attempts to communicate with servers on the internet, effectively blocking the spread of viruses."]}