Due to the overwhelming abuse of misconfigured Wingate, Socks and Proxy
servers being exploited daily, the UnderNet network is now checking all
users upon connection to any of the UnderNet IRC Servers.
This check is ONLY DONE if a user attempts to establish a connection to an
UnderNet IRC server.
This should not be considered an attack on your system.
Be aware that this sort of connection to your system is probably common if
you use services such as free IRC networks, game servers, etc...
If you do not desire this type of check to occur, then simply block access
to the UnderNet network servers.
Connection to and use of the Undernet.org IRC Network is conditional upon
acceptance of any and all applicable policies of the individual servers
that make up the Undernet as well as acceptance of the Undernet.org Acceptable Use Policy and its Indemnify and Hold Harmless
Fixing a Wingate server
Upgrade your Wingate server if version prior to 2.1 : http://www.deerfield.com/support/wingate/kb/index.htm?a=1314
Get help about Wingate at http://www.practicallynetworked.com/sharing/secureproxy.htm.
Fixing a Socks 4/5 server
If you run unix Socks 4 or Socks 5, check your ACL.
Following are a few URL which could help you fix your misconfigured proxy
server on a Windows machine :
Socks Proxy server : http://msdn.microsoft.com/library/default.asp?url=/library/en-us/dnproxy/html/msdn_proxycase.asp
Upgrade and get help about your winproxy at : http://www.winproxy.com/
Upgrade your sygate server : http://www.sygate.com
Fixing a Squid server
Get help for Squid ACLs at : http://www.squid-cache.org/Doc/FAQ/FAQ-10.html#ss10.2
Get detailed help at : http://www.documents.cyberabuse.org/?page=vulnerabilities&doc=1
Upgrade your Squid 1.x server at : http://www.squid-cache.org/
Fixing a HTTP proxy server
Take a look at your manual for the ACL feature...
Vulnerable proxy servers can be of all types and brands. If your proxy
server is not supported anymore and you
are not sure about your configuration, firewall it so only your LAN can use
Get help about WinRoute at www.kerio.com. They have a manual in adobe format found under downloads/support.
Get detailed help about CacheFlow at :
You can then check for a misconfiguration by using CyberAbuse Web Proxyscanner