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Network Communication Issues

By jdaly ·
I recently took over a small network which hadn't been managed that well in the past and I am experiencing a number of complications.

I attempted to setup a WSUS server in VMWare and all went well until I realized no computers were checking in with the server. I edited the GP to check this specific machine, still no luck.

This led me to investigate LAN issues and I came to notice that a number of the machines cannot ping each other, but it doesn't seem to be the result of anything easy to fix. We essentially have two LANS, one on 192.168.1.0 and one on 192.168.0.0. The servers on both of these networks have no problem communicating with each other, but random machines scattered around have trouble pinging (and only pinging- logins, network, printer access all work fine). The only difference in any IP configurations is that the servers have been configured to use the Point to Point routers as default gateways, while all the client machines use our Cisco Firewall (which is configured as the true gateway to the ISP). The servers can't ping some random machines, but those machines can always ping the servers. Some machines can ping some machines, but not others (all on the same subnets). I have a feeling that most of the problems I am experiencing have something to do with the way the network is designed but I can't figure out what.

We have 3 total Windows Servers. Win2k Sp4 DC with member servers 2k and 2k3 (Exchange). These machines are all connected to 3 switches, which are connected to both a router for point to point and a Cisco firewall.

Any ideas?

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Two ideas...

by Avila In reply to Network Communication Iss ...

1. Make sure it is not the computer firewall the one blocking the ping
2. Check if the computers that can ping each other are in the same workgroup, you should have one common workgroup since this may block the ping also (in some versions of windows).

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