How to successfully double NAT?

[RamGuy]

I could need some help with how to successfully running two router (double NAT) in the same local network WITHOUT getting hiccups, firewall and port filtering issues.

This has proven to be a real pain in the butt for us, the thing is that I live in a basement apartment whereas my Internet connection comes for free the only downside is that I'm hooked up directly to the house owners router and not directly to an IPS-modem or anything which means there'll be double NAT going on as I'm required to run my own separate network downstairs aka I need to run my own router.


This isn't that big of a problem in the first place, I just toss my Asus RT-N16 into the mix and everything works by itself, I get internet connection and stuff like that. Problems start to occur when trying to play Steam games or standalone games Online, sometimes I have trouble connection to games my friends share and when trying to host my own games no one manage to connect to the game session without being instantly kicked or simply not able to connect / see my game in the first place.


It's obvious whats going on here, no matter how many ports I forward, no matter if I try DMZ-hosting my IP-address or disabling all "safety" features on my Asus RT-N16 it's not making any progress and I'm guessing this is because it doesn't really matter what my router allows when everything goes through my house owners router anyway so we'll have to configure both routers in the right way in order for traffic to flow successfully through.

But how is the best and most efficient way to do this? I could also convince my house owner to let me just use a smart switch instead of a router but I would still need access to his router in order to create my port forwarding rules every time I get myself a new game and things like that so it wouldn't be that efficient in the long run.


The best solution would be to get my router white-listed in some way, making all traffic between my Asus RT-N16 and through his D-Link DVG-5802S being patched right through without any firewall or filtrating interference whatsoever, but how do we configure a setup like this? Is it even possible?



What do you think would be the best solution?

 

[thiggins]

Anything you do on your router to open ports doesn't matter unless the upstream router makes those ports available to you.

Only thing you can do is ask the house owner to put your router's WAN IP in his router's DMZ or forward the ports you need to it.

Note that if the house owner doesn't want you on HIS LAN, your router should be the upstream router. Right now, you should be able to reach any of his shares by using its IP address.

If the house owner had a router with VLAN capability or connected you via a smart switch with VLANS you could get what you want without using a router and with better separation of traffic.