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firewall on network
Name: mary sue Date: January 22, 2003 at 08:24:09 Pacific OS: xp CPU/Ram: 256
Comment:
I don't know if this is the correct area to post my question. Let me know if I need to ask elsewhere. On my firewall log for my network I'm getting this message thousands of times. "Packet discarded from 192.128.128.22 port 1041 to 192.128.128.44 port 1900 (UDP) (default)" I believe this is a computer on my network doing something to my firewall, what is it? The computer 192.128.128.22 is running xp.
Name: Brian Rignall Date: January 22, 2003 at 16:56:55 Pacific
Reply:
Your assumption would appear to be correct.
Why are you running a firewall internally on a network?
You should have file access restrictions to prevent unauthorised internal access.
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Response Number 2
Name: FredF Date: January 23, 2003 at 22:25:28 Pacific
Reply:
UDP 1900 is Universal PnP searching for other UPnP aware devices including gateways (your firewall). There are exploits and DoS/DDoS attacks that use Plug and Play so it would be best to minimally eliminate the vulnerability. See the patch at http://www.microsoft.com/technet/security/bulletin/MS01-059.asp . I believe XP has UPnP NAT traversal turned on by default - see the registry hack at http://is-it-true.org/nt/xp/registry/rtips18.shtml to turn it off.
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Response Number 3
Name: FredF Date: January 24, 2003 at 12:32:22 Pacific
Reply:
Also Steve Gibson has a fix on his web site http://grc.com
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