LAN gaming problem on a bit complex network!

Custom / CUSTOM
August 13, 2009 at 05:05:01
Specs: Microsoft Windows XP Professional, 2.677 GHz / 503 MB
Hi, this is the first time to use this great forum, and I want to "pre thank" everyone who will care to help me.
Now here is the situation in details:

Main Problem:
Continous disconnections when trying to play LAN games like: FIFA 09 - FIFA 08 - Battlefield 2 - Command and Conquer Generals. Some other LAN Games do work like Medal of Honor Allied Assault and Red Alert 2, although sometimes connection couldn't be established.

More Specific Description:
On FIFA 09 the PC that started the server couldn't be listed on the client PC, on FiFA 08 the Client PC can see the server but when trying to connect and during loading the match it is dissconnected to the desktop with no error messages. Other games do the same.

My Network:
I have 2 Routers and 2 Networks connected all together.

Router 1: Netgear DG834G wirless router with ADSL line 2 Mbps
DHCP: Enabled with allowed range (10.1.1.240 - 10.1.1.250)
Router LAN IP (Gateway): 10.1.1.1
Subnetmask: 255.255.255.0
This router is connected to a 24 Ports Switch (3Com) used to serve 16 PCs all with Win XP Home SP3, No Antivirus but protected by Deepfreeze, IPX/SPX and NetBOS are installed, Windows Firewall is disabled, and no other firewall software is installed. IP Range of these PCs are 10.1.1.2 - 10.1.1.20 with subnet mask 255.255.255.0, all PCs use static IPs, All PCs are on the same workgroup.

Router 2: Linksys AM200 wired router with ADSL line 4 Mbps
DHCP: Disabled
Router LAN IP (Gateway): 10.1.1.200
Subnetmask: 255.255.255.0
This router is connected to a 16 Ports Switch (Dlink) used to serve 10 PCs all with Win XP Home SP3, Avira Antivirus and protected by Deepfreeze, IPX/SPX and NetBOS are installed, Windows Firewall is disabled, and no other firewall software is installed. IP Range of these PCs are 10.1.1.201 - 10.1.1.220 with subnet mask 255.255.255.0, all PCs use static IPs, All PCs are on the same workgroup.

Other PCs and Network Related Issues:
1 Laptop Connected to Wirless router.
7 Other PCs
3 Other Switches (All Switches are Unmanaged)
5 Network Connected Printers

Notes:
I can transfer data freely on the network.
I can print on any printer on the network (have 5 printers).
I can control remotly any PC on the network using software like EchoVNC or Radmin.
I am not sure if any configuration on the router is set wrong, I use default setting except for Linksys AM200 where I use MAC Filtering to allow only PCs on Network 2 to access this Internet Line (Only for Internet limitation, but I don't want to limit gaming between Network 1 and Network 2)

Important Hint: Network 1 Used to be OK with no problems related to gaming but after connecting Router 2 and Related PCs (Network 2) the problem emerged.

Sorry for the long post, but I tried to make everything as clear as possible.

Illustration for the network:
http://img514.imageshack.us/img514/...


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#1
August 13, 2009 at 10:54:23
the games may rely on specific ports being opened on the routers. things like FTP and print traffic use more standard ports that are typically open by default on routers, but games usually have more specific ports that they use for network communication.

you'd have to find out which ports though, i guess either the game homepage or Google would be your best option there.


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