G
Guest
I have traced a recurring network outage at work to Windows Live Messenger on
my machine.
A few days ago people started reporting no internet connectivity. Our
current network configuration has about 20 users with access through a
TimeWarner high speed connection.
Regardless of the amount of network traffic, users were reporting no
connectivity. I could restore service by power cycling the TimeWarner
connection. I had Time Warner out to test and replace the modem.
***Lot's of other troublehooting that I won't get into here as it was
irrelivant...
....then
I ran a packet sniffer on the connection between the switch and the firewall
which would show all internet traffic.
One IP address reporting malformed packets around the time of the connection
loss. I checked the DHCP leases... it was the IP address of my machine.
I verified that this issue only occurred when my machine was on the network.
I installed and ran a packet sniffer on my machine logged in as admin... the
internet connection stayed healthy. I reviewed what would be different
between admin account and my user account. Might be messenger.
I logged into Windows Live Messenger.
I watched the packet sniffer collect data and realized the IP address that
Windows Messenger was communicating with was familiar from the previous
analysis which showed malformed packets. I watched and waited.
I started seeing malformed packets appear on in the Windows Live Messenger
communication packets.
Within a few seconds, the continuous ping to google.com from another machine
began failing indefinately.
I power cycled the modem again and closed Windows Live Messenger. All is
well.
However I would like to be able to use messenger.
Any insight would be greatly aprreciated.
Thanks!
my machine.
A few days ago people started reporting no internet connectivity. Our
current network configuration has about 20 users with access through a
TimeWarner high speed connection.
Regardless of the amount of network traffic, users were reporting no
connectivity. I could restore service by power cycling the TimeWarner
connection. I had Time Warner out to test and replace the modem.
***Lot's of other troublehooting that I won't get into here as it was
irrelivant...
....then
I ran a packet sniffer on the connection between the switch and the firewall
which would show all internet traffic.
One IP address reporting malformed packets around the time of the connection
loss. I checked the DHCP leases... it was the IP address of my machine.
I verified that this issue only occurred when my machine was on the network.
I installed and ran a packet sniffer on my machine logged in as admin... the
internet connection stayed healthy. I reviewed what would be different
between admin account and my user account. Might be messenger.
I logged into Windows Live Messenger.
I watched the packet sniffer collect data and realized the IP address that
Windows Messenger was communicating with was familiar from the previous
analysis which showed malformed packets. I watched and waited.
I started seeing malformed packets appear on in the Windows Live Messenger
communication packets.
Within a few seconds, the continuous ping to google.com from another machine
began failing indefinately.
I power cycled the modem again and closed Windows Live Messenger. All is
well.
However I would like to be able to use messenger.
Any insight would be greatly aprreciated.
Thanks!