K
Karl Burrows
I posted a week ago or so with the same problem, but wanted to further
clarify what has happening and has happened.
I was called about 2 weeks ago when the Internet connection went down on a
small 20 client network. Network is configured as follows:
*About 20 client workstations. Most are WinXP Pro (15), the rest are Win98.
All have latest updates, patches, etc.
*Network consists of Domain controlled by Win2000 Server. No other servers
in the network. Server runs WINS, DNS and DHCP, AD.
*Previous Internet connection was DSL provided by local company that
piggy-backed off several other DSL providers eventually getting back to
BellSouth.
*Rest of the network consists a few switches for cross-connects and 2 main
switches in the wiring closet. These all plug into a simple DSL router
acting as our Gateway for the Internet.
It all started about 2 weeks ago when the WAN went down. We would reboot
the modem and router and it would come up for about 15 minutes then shut
down again. I did a little research and found the ISP provider they chose
was probably not the most reputable company and finally convinced them to
move to BellSouth for the DSL just so they have a primary carrier and better
support, etc.
Anyway, I have been working on this connection for over a week now. We have
moved it to a new phone line and still get cut off after about 15 minutes.
I even bought a new version Linksys and tried a NetGear VPN router. Same
thing happens on all routers. I have tried plugging the cable into another
port on the switch, replaced the cable, etc. so I don't think it is a
network based hardware issue at this point. I even replaced the switches to
see if it was a broadcast issue on a switch.
When we do get dropped, I can no longer access the Linksys web interface,
but I can ping it. I can not, however ping anything on the WAN side.
Interestingly enough, if I remove the cable from the router that connects to
the switches and plug in a client, I can get on the Internet with no
problems an can once again access the Linksys interface (after rebooting the
router).
The only thing I have found looking at the client computers, is one computer
was infected with a hacker tool from a floppy and had the Jetsky virus. I
removed it from the network, checked all the client computers and the
problem still exists.
I am totally out of solutions and am just brain dead trying to figure out
what may be wrong. I thought finding the Trojan would be the problem and
maybe I didn't totally figure out how to remove it, but other than that, it
should be networking 101. There haven't been any other changes to the
network configuration or any of the clients in several months.
Any help would be greatly appreciated!!!!!
clarify what has happening and has happened.
I was called about 2 weeks ago when the Internet connection went down on a
small 20 client network. Network is configured as follows:
*About 20 client workstations. Most are WinXP Pro (15), the rest are Win98.
All have latest updates, patches, etc.
*Network consists of Domain controlled by Win2000 Server. No other servers
in the network. Server runs WINS, DNS and DHCP, AD.
*Previous Internet connection was DSL provided by local company that
piggy-backed off several other DSL providers eventually getting back to
BellSouth.
*Rest of the network consists a few switches for cross-connects and 2 main
switches in the wiring closet. These all plug into a simple DSL router
acting as our Gateway for the Internet.
It all started about 2 weeks ago when the WAN went down. We would reboot
the modem and router and it would come up for about 15 minutes then shut
down again. I did a little research and found the ISP provider they chose
was probably not the most reputable company and finally convinced them to
move to BellSouth for the DSL just so they have a primary carrier and better
support, etc.
Anyway, I have been working on this connection for over a week now. We have
moved it to a new phone line and still get cut off after about 15 minutes.
I even bought a new version Linksys and tried a NetGear VPN router. Same
thing happens on all routers. I have tried plugging the cable into another
port on the switch, replaced the cable, etc. so I don't think it is a
network based hardware issue at this point. I even replaced the switches to
see if it was a broadcast issue on a switch.
When we do get dropped, I can no longer access the Linksys web interface,
but I can ping it. I can not, however ping anything on the WAN side.
Interestingly enough, if I remove the cable from the router that connects to
the switches and plug in a client, I can get on the Internet with no
problems an can once again access the Linksys interface (after rebooting the
router).
The only thing I have found looking at the client computers, is one computer
was infected with a hacker tool from a floppy and had the Jetsky virus. I
removed it from the network, checked all the client computers and the
problem still exists.
I am totally out of solutions and am just brain dead trying to figure out
what may be wrong. I thought finding the Trojan would be the problem and
maybe I didn't totally figure out how to remove it, but other than that, it
should be networking 101. There haven't been any other changes to the
network configuration or any of the clients in several months.
Any help would be greatly appreciated!!!!!