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Network Nightmares

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by nevg

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I have been asked by small PC Company to assist one of their clients with network problems. Apparently a virus caused their 16Gb Internet CAP usage to be exceeded in a few days. The virus was delt with. Unfortunately I have inherited a legacy problem where there was no documentation regaridng IP addresses, Domain Names or router configurations. After much , phone calls (money), client visits (money) and, network configurations I still have the same problem. To connect to the Internet and recieve emails I have to connect the server directly to the router (Netgear). To allow the workstations to see the server and network, I have to disconnect the server from the router and connect to the LAN. (no more internet or email). Network is Windows XP Pro.

Any suggestions.

5 replies

by cg it

legacy [16 bit compiled] aside, not sure what legacy has to do with documenting the network. If your client wants it documented, then bid the time it will take.

so, the real question is, how is the LAN connected together? you mention that to get to the internet for mail, you have to hook up the server to the router, however to get workstations to see the server you have to unplug it from the router and plug it into the LAN switch.

Why not try leaving the server and workstations plugged into the LAN switch and patch from the lan switch to the router's built in LAN switchport? The router's LAN address then is the default gateway and all traffic not destined for the LAN will be sent to the default gateway [router]

just a thought.

by nevg

Thanks. We eventually got all working again. One of the Lan cables wasn't quite connected on the Hub. Thanks for the help.

by rmathis

I'm guessing your new to networking Welcome. first thing first the domain name anyone can get in about to secounds. Go to sign on and you see it. Log on to "xx-xxx". As for no documentation on the newtork get a quick and easy port scanner like Angrey IP theres the IP Range you need to work with a few shots and you can get the right range. If not ger someone to run /ipconfig and thats your starting segment. As for no connection to the web use a patch cable from one switch to the router and you should be good if further complacations arise then might want to get a partner of yours to take a look or just let us know a little more. It seems like your in a rock in a hard place and giving someone a bad name. Welcome to the world of IT its aswome.

by nevg

Thanks for the feedback. I agree with the rock-and-hard-place but I think we've also all been there, when you have someone else's stuff-up to fix. Like two mechanics from different cultures and languages fixing the same problem on the same vehicle at different times. i.e. it rarely ever works.

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