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I installed PGL for fun, and checked the logs. The following appeared repeatedly (several times a second)in my logs:
Jan 31 05:22:57 OUT: 192.168.1.2:631 192.168.1.255:631 UDP || Consiglio Nazionale delle Ricerche | Bogon | anti-p2p activity
Jan 31 05:23:28 OUT: 192.168.1.2:59395 239.255.255.253:427 UDP || Bogon
Jan 31 05:23:29 OUT: 192.168.1.2:34602 239.255.255.253:427 UDP || Bogon
Jan 31 05:23:30 OUT: 192.168.1.2:44794 239.255.255.253:427 UDP || Bogon
At first, I was alarmed. Why would my computer be dialing out at all?! Then I looked a bit closer at the address for "consiglio". I was a little relieved to realize that this was just cups broadcasting to the local network. The other address I don't understand. It is listed as "bogon" which is an ip address that supposedly doesn't exist.
Anyway, I stopped cups, and both of these occurrences stopped. Why in the heck is my cupsd trying to ping 239.255.255.253:427?
Last edited by Convergence (2012-01-31 14:31:36)
It's a very deadly weapon to know what you're doing
--- William Murderface
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239.255.255.253 is a SLPv2 multicast address, used for Zeroconf service discovery.
It's not a public address, so no traffic leaves your network.
CUPS uses it to show shared printers on the local network via dnssd. To disable this, replace
BrowseLocalProtocols CUPS dnssd
with
BrowseLocalProtocols CUPS
in /etc/cups/cupsd.conf and restart cups. That should make it "shut up".
Last edited by teekay (2012-01-31 14:35:49)
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Thanks! I thought that it might be something like that.
It's a very deadly weapon to know what you're doing
--- William Murderface
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