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Old 09-21-2005, 04:16 PM   #1
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Question Getting around NAT

My college uses NAT... is there any way I would able to play multiplayer games directly with another computer (using the IP address option) on the network? How about figuring out which port I should set my bittorrent client to listen to?
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Old 09-22-2005, 07:44 AM   #2
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Default Re: Getting around NAT

Quote:
Originally Posted by RaisingKane
which port I should set my bittorrent client to listen to?
It doesn't matter what that port is aslong as the firewall allows connections through it.
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Old 09-22-2005, 09:06 PM   #3
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Default Re: Getting around NAT

Well, it works, but slowly. Using Azureus's connection wizard keeps coming up with NAT errors. I was wondering if there was something I could do to see what port the NAT hq was assigning to me (if that's how it works) so I could speed things up a bit.

But I don't care so much about bittorrent. It's the gaming I'm trying to figure out...
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Old 09-23-2005, 09:20 PM   #4
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Some games allow you to specify the port you want to use for the game. If your game allows such an option you can set the game to use a port that you know isn't blocked by your college. Your college has blocked these ports for a reason, they don't want students sucking up all the bandwidth for games. This is a college network, I personally don't blame them for blocking these ports.

It is possible to bypass a firewall with ARP poisoning, but the details of such a procedure are beyond the rules of this forum. However if the college is running a software such as Arpwatch, they will have the advantage with this method.
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Old 09-23-2005, 09:41 PM   #5
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Default Re: Getting around NAT

No, I'm trying to play games with my roommate using the IP address method, but because of NAT changing around the IP addresses, it doesn't work, so I can't host games. I don't think port blocking is the problem.
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Old 09-24-2005, 02:41 PM   #6
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Default Re: Getting around NAT

I think you need to get a router and make a LAN? This way you and him can play locally... You can port forward to the host of the game. This way other people can join.
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Old 10-03-2005, 09:45 PM   #7
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NAT just translates from Internal adresses such as 10.1.xxx.xxx address to an external gateway or proxy adress such as the address assigned by your ISP. You may be dealing with a low lease leavel with the DHCP that rotates the IPs constantly. Most leasing scopes rotate on a 24 hour basis, yours maybe higher.

To get around it, try hard coding your IPs in. Then try connecting directly by IP.
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