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Hopefully, someone here will have an answer or can point me in the right direction.
I have cable internet access, a hardware firewall/router, and then a second router, but the computers behind the second router can't connect to the internet and I think i'm running into an issue with double NATting.
My set up is like this
Cable modem
+ firewall/router
++ computer 1
++ computer 2
++ linksys wireless router
+++computer 3 wired to the linksys
computers 1 and 2 can see the internet and work fine. Computer 3 was also hooked up to the firewall and worked fine, but then i moved it over the linksys so i could configure the linksys wireless router. But now Computer 3 can't get to the internet.
The linksys is set up as a "router" and not a "gateway" since the firewall is doing that. I did a ping test from computer 3 via the linksys configuration screens and I succcessfully pinged everything else - the cable modem, the firewall, comps 1 and 2, the linksys and itself, comp 3.
I've been searching the net for answers and have tried a few things, but nothing has worked yet. linksys is plugged into port 3 of the firewall and not the Uplink port. I've tried DCHP and no DHCP on Linksys and that caused no end of headaches.
Any ideas on what else to try in configuration so computer 3 can get to the internet?
I have cable internet access, a hardware firewall/router, and then a second router, but the computers behind the second router can't connect to the internet and I think i'm running into an issue with double NATting.
My set up is like this
Cable modem
+ firewall/router
++ computer 1
++ computer 2
++ linksys wireless router
+++computer 3 wired to the linksys
computers 1 and 2 can see the internet and work fine. Computer 3 was also hooked up to the firewall and worked fine, but then i moved it over the linksys so i could configure the linksys wireless router. But now Computer 3 can't get to the internet.
The linksys is set up as a "router" and not a "gateway" since the firewall is doing that. I did a ping test from computer 3 via the linksys configuration screens and I succcessfully pinged everything else - the cable modem, the firewall, comps 1 and 2, the linksys and itself, comp 3.
I've been searching the net for answers and have tried a few things, but nothing has worked yet. linksys is plugged into port 3 of the firewall and not the Uplink port. I've tried DCHP and no DHCP on Linksys and that caused no end of headaches.
Any ideas on what else to try in configuration so computer 3 can get to the internet?
posted by:
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Seattle
|
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Re: Double NAT solution?
Tue, March 22, 2005 - 9:02 AMTry unplugging the wireless router, then releasing & renewing the IP address from the devices as they connect to the cable modem.
-Syd
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Re: Double NAT solution?
Tue, March 22, 2005 - 9:52 PMIt took a few hours of internet searching, and more than a few recongifurations and resettings, but I think I finally got this setup to work.
Essentially, I had to turn the linksys wireless router into a plain old switch.
www.linksys.com/support/to...ogether.asp
This page talks about hooking up two linksys wireless routers together but it applied in my situation.
I was able to leave my firewall/router as is, the key step was connecting a cable from any free port there to *port 4* on the linksys, instead of connecting to the internet port on the linksys. And I had to turn off DHCP on the linksys.
Once I rebooted computer 3, I was able to get to the internet again, and this means I have two more wired ports I can use to hook up other computers, as well as now having the wireless connection to other computers in the house, which was the whole point in the first place.
Ain't technology grand?
