Wingate Causing Internet connection to fail?

[mshuard]

Hi everyone,

I have wingate 6.1 build 1077 on Windows Server 2003 Standard. I am experiencing an issue where the server will no longer seem to have a connection to the internet.

This server is acting as a mail relay to our internal exchange server, as well as acting as a proxy server to allow certian clients access to the internet. When the server becomes "disconnected", nobody can send out any e-mail, or access the internet. Also, nslookups fail.

This server acts as a DNS server for the network, as it is configured with forwarders. When the server becomes "disconnected" it cannot forward requests.

I have debugged DNS to the best of my knowledge, and it is working perfect when the server is connected. There isn't a problem w/ the physical connection either.

Please help, it seems that it is happening every 3-4 hours, and is only cured w/ a server reboot.


HELP!!

[edtude]

The next time try just simply removing the ethernet cable from the NIC card and immedialtey plugging it back in to see if the Network comes back up.

[mshuard]

Ok.. Internet connectivity went down again.. No nslookup & such.

Unplugged both the internal and external Nics from their cab;es.. Let it sit for about 30 seconds, and plugged them back in. No luck. Still the same.

Restarted the Wingate engine after the cables were plugged back in as well.

[adrien]

Hi

We have recently started seeing these symptoms when there are mutliple default gateways in the system.

In general you should never have a default gateway assigned to any interface that's not connected to the Internet, and it should never be the IP address of anything other than a router to the internet... the one exception is for a dialup interface, where the default gateway is also the IP address of the interface itself.

can you check for gateway settings on your adapters?

Adrien

[mshuard]

I have removed the gateway information from the internal nic. The only gateway assigned is now on the external network card.

I will try this and let you know what happens.

Thanks,
Mike

[mshuard]

It's been almost 24 hours now, and the server is working fine.

Thank you for all of your help!