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It seems most odd that you can't disable wireless on any router in your facility. &nbsp;That would not really be acceptable. &nbsp;How do you maintain wireless security and, thus, network security?<br />
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Presumably if the Comcast router has wireless then it's providing NAT and a private subnet. &nbsp;And, if it's on a LAN subnet then you should be able to access it - if you can log in. &nbsp;The access address is likely the same as the gateway address one would use to connect to it.<br />
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If all you are doing is using the e4200 for wireless then I would connect it LAN port to LAN port. &nbsp;There is a diagram attached for that.<br />
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What do you intend to use for terminating the VPN in the office? &nbsp;That's rather key in this discussion.<br />
<a href="https://filedb.experts-exchange.com/incoming/2014/03_w10/837936/Wireless-Router-as-a-Simple-Swit.pdf" target="_blank" class="file-inline" title="wireless router as access point and switch (10 KB)"><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 512 512"><path d="M67.508 468.467c-58.005-58.013-58.016-151.92 0-209.943l225.011-225.04c44.643-44.645 117.279-44.645 161.92 0 44.743 44.749 44.753 117.186 0 161.944l-189.465 189.49c-31.41 31.413-82.518 31.412-113.926.001-31.479-31.482-31.49-82.453 0-113.944L311.51 110.491c4.687-4.687 12.286-4.687 16.972 0l16.967 16.971c4.685 4.686 4.685 12.283 0 16.969L184.983 304.917c-12.724 12.724-12.73 33.328 0 46.058 12.696 12.697 33.356 12.699 46.054-.001l189.465-189.489c25.987-25.989 25.994-68.06.001-94.056-25.931-25.934-68.119-25.932-94.049 0l-225.01 225.039c-39.249 39.252-39.258 102.795-.001 142.057 39.285 39.29 102.885 39.287 142.162-.028A739446.174 739446.174 0 0 1 439.497 238.49c4.686-4.687 12.282-4.684 16.969.004l16.967 16.971c4.685 4.686 4.689 12.279.004 16.965a755654.128 755654.128 0 0 0-195.881 195.996c-58.034 58.092-152.004 58.093-210.048.041z"/></svg>Wireless-Router-as-a-Simple-Swit.pdf</a>
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wireless router as access point and switch

Wireless-Router-as-a-Simple-Swit.pdf

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I know what the comcast router is.. its the 10.x.x.1 I can even login, however I can not disable Wireless or advance rules or features... and it is connected LAN to LAN.. e4200 is 192.168.x.x
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<blockquote>
What do you intend to use for terminating the VPN in the office? &nbsp;That's rather key in this discussion. 
</blockquote>
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What do you mean by terminating VPN?<br />
Like when the session is closed? &nbsp;I am new to this, I know what I need, just dont know how to get there, while utilizing the most secure, least amount of effort, and maintaining best practices and guidliness.<br />
Hardware:<br />
-Techno (Comcast)<br />
-LinkSys e4200<br />
-Linksys Switch<br />
<br />
-LinkSys Wrt54GS - DDRT-WRT
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I also have an ASA 5505, but it seems to loose its config all the time, and then I cant get anything to work... But it also could be a rookie user error. Which is perfered. DDRT or ASA 5505. I have 80MB download speed. subscribed to 105+
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I have two main routers, probably not idea, but let me explain.<br />
<br />
I have a technocolor something or nother from comcast, which is a cable modem/router and has VOip.. unfortuntelly I can not configure too much on this device. So while wireless is enabled, I do not use it.. I cant even disable it. &nbsp;I cant switch to bridge mode or anything.<br />
<br />
So I connected a linksys e4200 wireless router... this is on a different subnet, and is configured for wireless, and etc. This is our main device we connect to and all forwards from this device accordingly.<br />
<br />
My question, is somehow I want to enable and have the ability to VPN into home... <br />
I dont think natively I can do this, and would have to add to dmz port forward... not sure... To test, I have a Linksys wrt54gs v 5.0. &nbsp;I flashed with DDRT but not sure what to do now, and how to add to infrastructure.... I think adding it as a repeat bridge with same SID and passwords and authentication, but i need thoughts are corerect setup and how to enable and use vpn so i can connect from external
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I have two main routers, probably not idea, but let me explain.

I have a technocolor something or nother from comcast, which is a cable modem/router and has VOip.. unfortuntelly I can not configure too much on this device. So while wireless is enabled, I do not use it.. I cant even disable it.  I cant switch to bridge mode or anything.

So I connected a linksys e4200 wireless router... this is on a different subnet, and is configured for wireless, and etc. This is our main device we connect to and all forwards from this device accordingly.

My question, is somehow I want to enable and have the ability to VPN into home... 
I dont think natively I can do this, and would have to add to dmz port forward... not sure... To test, I have a Linksys wrt54gs v 5.0.  I flashed with DDRT but not sure what to do now, and how to add to infrastructure.... I think adding it as a repeat bridge with same SID and passwords and authentication, but i need thoughts are corerect setup and how to enable and use vpn so i can connect from external

Wireless, VPN, router

A router is a networking device that forwards data packets between computer networks. Routers perform the "traffic directing" functions on the Internet. The most familiar type of routers are home and small office cable or DSL routers that simply pass data, such as web pages, email, IM, and videos between computers and the Internet. More sophisticated routers, such as enterprise routers, connect large business or ISP networks up to the powerful core routers that forward data at high speed along the optical fiber lines of the Internet backbone. Though routers are typically dedicated hardware devices, use of software-based routers has grown increasingly common.

Routers

Hardware-based firewalls provide more sophisticated protection for inbound and outbound traffic than the simple Windows software firewall or the basic NAT firewalls found in routers. These devices implement techniques such as stateful packet inspection, deep packet inspection, and content filtering; and may include built-in antivirus and anti-malware protection.

Hardware Firewalls

A virtual private network (VPN) is a network that uses a public telecommunication infrastructure, such as the Internet, to provide remote offices or travelling users access to a central organizational network securely. VPNs encapsulate data transfers using secure cryptographic methods and other security mechanisms to ensure that only authorized users can access the network and that the data cannot be intercepted.