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Games over a shared internet connection

By gstratton ·
Hi Everyone,
Hope someone can shed some light on this cause it's done my head in.

I have a PC at home that is connected to my Friends PC via lan which has the internet on it. So basically I share the internet. I am in Australia and it is cable internet. When I try to netmeet or remote assistance or even play games over the internet, I cannot connect to any servers or even a pc that I am trying to fix.
I understand that I have a local IP 192.168.0.69 and am not connected directly to the net, but I used to be able to play games etc through this set up.
We are both running Symantec Client firewall but have allowed the subnet 192.168.0.1 - 254 through and also allowed the applications that we are using. I am on Win XP PRO SP2. Someone please help. :)

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by p.j.hutchison In reply to Games over a shared inter ...

Your IP address is a private IP address and unless your modem supports NAT (converts between private/public IPs) you will never be able to connect to the net.
If your modem setup supports DHCP, try switching to that so that you are given a public IP so that you cannot to other PCs and the net.

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by gstratton In reply to

Thanks, but I can get onto normal web pages and other things on the internet. It's mainly when i have to connect to a game server or another IP address for remote assistance.

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by HAL 9000 Moderator In reply to Games over a shared inter ...

Firstly what type of cable connection is being used? If it is an Ethernet on the gateway are the two LAN connections Bridged? Your IP address should be an internal one which is supported by the internal network and then you need to look at the assigned IP address for the Internet connection but most likely it is set to Auto Select.

Now I'm assuming that this problem has only started after applying SP2 so I would at first be guessing that it has something to do with the way SP2 is addressing the internal network but if that is not the case what was added just before it failed? While not as secure but as you already have the software loaded what you could do is pick up an 8 port hub and connect the Cable Modem directly to one port on that and then connect both computers to the Hub. You should be able to pickup one of these for about $45.00 - $50.00 AU here and that would cutout any problems with the shared connection through the other computer. Of course if you have a USB connection things will be a lot different but these are at best unreliable and a Ethernet is far more stable so if you have that option use it, or keep the existing USB connection to the master computer and just plug in the RJ45 plug to the modem if there is one available. That should cure your problems but if it doesn't please post back with what has been done to the system prior to it falling over and what the type of modem is.

Col ]:)

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by CG IT In reply to Games over a shared inter ...

probably the easiest way to solve this problem is to get a consumer level router.

If your friends computer is directly connected to the internet his computer had to have been configured for ICS. to do that you should multihome that computer [one NIC connected to the cable service provider modem, 1 NIC connected to a switch]. Therefore his computer becomes in essence a router. His computer must always be running to provide Internet connections sharing. Further, his computers firewall will control any inbound or outbound traffic, not yours just as a regular router would. To allow remote assitance on your computer, his firewall on his computer has to allow that traffic through his to yours.

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by scsi_man2000 In reply to Games over a shared inter ...

How is the network configured? Is the internet tied to your friend's computer and shared to the network? Is the connection running into a router which shares the connection? Or, is the cable modem simply connected into a switch or hub? This type of information will be necessary to pinpoint a problem.

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by gstratton In reply to

Correct, The internet is on my friends computer, Shared through XP, his pc is multihomed, so i plug in through one of his NIC's to get internet.

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by CG IT In reply to Games over a shared inter ...

buying and utilizing a consumer level router would be the easiest solution to this problem. baring that, what you have is a computer [your friends]acting as a router via ICS [internet connection sharing]. because all traffic goes through his computer [his computer is the gateway out] his firewall not yours will block traffic.

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by gstratton In reply to

I have checked his firewall and we have both tried to work this out. eg, he is able to play World of Warcraft online, therefore his firewall allows it. I cannot play it cause I cannot connect to any server, I also have it allowed on my (Software) firewall.

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by gstratton In reply to

Thanks, I think this has answered my question.
I will need to buy a router modem.
I can access the internet .. just not direct IP's needed for gameplay etc.
Thanks heaps.

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by scsi_man2000 In reply to Games over a shared inter ...

Most likely what you need to do is choose a port other than the default port for Worlds of Warcraft or any other game. Make sure that the game settings on your computer are set for that port, and also set all firewalls to allow traffic on that port. You will also probably need to set up port forwarding for that port on your friend's computer. To do this go to the properties of his internet connection, click on the "Advanced" tab, and click the settings button next to the "Internet Connection Sharing" check boxes. Click add, and enter a name, your computer's IP Address, and the port number you chose earlier for both the Internal and External ports. You may need to add a setting for both TCP and UDP. Make sure that the check box next to this new entry is checked in the network services list, and give it a try.

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