@Phopo & Co: DMZ IP

[Patrickssj6]

Next to my DMZ configuration in the router there is an IP (NOT the internal IP 192.168.X.X it's a complete different one). When I use it to connect inside the network, it works but when I use it externally (read: outside the network) it doesn't. So what is its purpose?

Is it some kind of IP requested from incoming connections?

[Limited]

Lemmie guess it begins with like 169.something?

[Patrickssj6]

Nope

[Phopojijo]

Huh that's a new one. What's your router model and did you upgrade its firmware to anything weird like Tomato, or DDWRT?

Also, a screenshot would be helpful. (Catch the whole "website", not just that single line)

[Patrickssj6]

http://img703.imageshack.us/img703/1386/awdaawdawd.png

but that IP is not my external one. Both routers I connect to have this.

model

Arris WTM552

[Phopojijo]

10-dot IP addresses are private addresses -- so you'll NEVER be able to reach a 10. address from the internet because like 192.168 it's not on the internet... it's inside networks... and you have multiple routers apparently... ...

Is that the DHCP-running router (the box that accepts one (or more) external numbers and assigns internal numbers)? Or do you like have -- more than one router set as the DHCP server?

[Cortexian]

Yeah, that "Static IP" should be your external address. You mention that you have multiple routers though, if they're not running their own internal DHCP and that's handled by another box (your modem maybe) then the reason it's showing that internal address as your "Static Address" is because each router can only "see" as far as your internal DHCP server.

[Patrickssj6]

No I don't have multiple routers (I just can connect to two, one from the neighbor :P) and both have this static IP thing which I have never seen before (not in America or Germany). But yeah it is probably an internal address to handle internal requests if you have multiple routers.

Because otherwise DMZ wouldn't work behind multiple routers.

[Cortexian]

Is the neighbors router the same as yours? It's odd that they're both displaying the same Static IP.

I assume your router is connected to a modem? Does that modem have the capability to function as a router as well (I.E. does it have multiple LAN ports)? It may be dishing out a static DHCP address to your router that isn't the same as your actual external IP. If the neighbor has the same ISP/modem than the same thing could be going on.

[Patrickssj6]

No no we have different static IPs. I was just saying that I never saw that this DMZ Static IP thingy on German/American routers (Linksys/T-Mobile).

[Phopojijo]

Yeah... I would check to see if your modem is doing NAT. I had extremely annoying troubles with my Bell modem doing that... to the point that I had to put it into bridge mode and let my router handle all sign-on crap. It was really annoyingly bad at port forwarding.

That or your ISP could be serving its clients through NAT... as some are doing because of fears of IPv4 allocation space being drained up. Hey why would ANYONE want to host a game or any other inbound connection anyway? -_-