R
Richard
While my son was using his computer the other night to IM his friends
and to save a file on a networked drive, the network disappeared. Two
things were happening around that time: a microsoft XP update arrived
and, it appears later from reading the log, Symantic Anti-virus
quarantined a Trojan.Stwoyle virus.
At this point:
1) The wired network connection won't acquire an address through
DHCP. I've given it an alternate address that's within the range of
the network.
2) A USB wireless device can acquire a DHCP address and connects to
our wireless network, but doesn't get us into any computers or to the
router.
3) Browsers can't find anything.
4) Pinging the router or anything else on the network produces
"destination host unreachable."
5) 'net view' and usually 'network neighborhood' produce a correct
list of the two XP computers on the network, but not the linux machine
running samba. If I click on one of the computers or one of the listed
shares in network neighborhood it tells me that it's not available.
What have I done?
1) pulled my hair out.
2) Followed the instructions on the Symantec site regarding the virus.
None of the registry entries that it said to look for were actually in
my registry.
3) Followed the instructions on Microsoft knowledge base 909444 about
problems that can occur after the latest critical update (MS05-051).
4) Gone back to a system restore point from before the update and the
virus.
5) Run system file checker successfully (sfc /scannow)
Still no joy.
Suspicious things that may or may not mean anything:
1. 'pathping' to the router address shows that there is 100% loss
between the host with its legit network address and the same host with
an address of 0.0.0.0 Shouldn't this ping go directly from the host to
the router address?
2. netstat -r shows a whole host of information, but none of it
reveals a route to the router address which is also the gateway and DNS
server.
So, nothing is getting out of my computer to the network.
Any ideas and assistance would be much appreciated. Thanks in advance.
Richard
and to save a file on a networked drive, the network disappeared. Two
things were happening around that time: a microsoft XP update arrived
and, it appears later from reading the log, Symantic Anti-virus
quarantined a Trojan.Stwoyle virus.
At this point:
1) The wired network connection won't acquire an address through
DHCP. I've given it an alternate address that's within the range of
the network.
2) A USB wireless device can acquire a DHCP address and connects to
our wireless network, but doesn't get us into any computers or to the
router.
3) Browsers can't find anything.
4) Pinging the router or anything else on the network produces
"destination host unreachable."
5) 'net view' and usually 'network neighborhood' produce a correct
list of the two XP computers on the network, but not the linux machine
running samba. If I click on one of the computers or one of the listed
shares in network neighborhood it tells me that it's not available.
What have I done?
1) pulled my hair out.
2) Followed the instructions on the Symantec site regarding the virus.
None of the registry entries that it said to look for were actually in
my registry.
3) Followed the instructions on Microsoft knowledge base 909444 about
problems that can occur after the latest critical update (MS05-051).
4) Gone back to a system restore point from before the update and the
virus.
5) Run system file checker successfully (sfc /scannow)
Still no joy.
Suspicious things that may or may not mean anything:
1. 'pathping' to the router address shows that there is 100% loss
between the host with its legit network address and the same host with
an address of 0.0.0.0 Shouldn't this ping go directly from the host to
the router address?
2. netstat -r shows a whole host of information, but none of it
reveals a route to the router address which is also the gateway and DNS
server.
So, nothing is getting out of my computer to the network.
Any ideas and assistance would be much appreciated. Thanks in advance.
Richard