I haven't had a whole lot of luck yet sniffing UDP packets. I was able to get the sniffer runner, but there is hardly any UDP traffic. What I think is happening, is that these UDP ports are being used to communicate over the loopback (localhost) adapter. DNS resolution is disabled on these Apache instances, so that's definately not it either. The number of UDP ports seems to climb the longer Apache is running. --- Axel-Stéphane SMORGRAV <Axel-Stephane.SMORGRAV@xxxxxxxxxxxxxx> wrote: > Could it possibly be for communication with a DNS > server ? Have you tried sniffing UDP packets sent > to/from this port? > > -ascs > > -----Original Message----- > From: Richard de Vries > [mailto:richard_devries@xxxxxxxxx] > Sent: Wednesday, July 05, 2006 7:07 PM > To: users@xxxxxxxxxxxxxxxx > Subject: [users@httpd] Apache listening for UDP > requests? > > While debugging an issue on one of my apache > webservers with lsof, I noticed the following: > > httpd 16679 http 23u IPv4 0x30008c5fa88 > > 0t0 UDP *:41034 (Idle) > httpd 16679 http 27u IPv4 0x30008bf4d20 > > 0t0 UDP *:* (Unbound) > httpd 16679 http 28u IPv4 0x30009526088 > > 0t0 UDP *:* (Unbound) > httpd 16679 http 29u IPv4 0x300084f32e8 > > 0t0 UDP *:* (Unbound) > httpd 16679 http 30u IPv4 0x30009590e68 > > 0t0 UDP *:* (Unbound) > httpd 16679 http 31u IPv4 0x300094087f0 > > 0t0 UDP *:* (Unbound) > httpd 16679 http 32u IPv4 0x30008edf0d0 > > 0t0 UDP *:* (Unbound) > > What does this mean? Is Apache listening for UDP > requests? If so, why? > > Richard > > --------------------------------------------------------------------- > The official User-To-User support forum of the > Apache HTTP Server Project. > See <URL:http://httpd.apache.org/userslist.html> for > more info. > To unsubscribe, e-mail: > users-unsubscribe@xxxxxxxxxxxxxxxx > " from the digest: > users-digest-unsubscribe@xxxxxxxxxxxxxxxx > For additional commands, e-mail: > users-help@xxxxxxxxxxxxxxxx > > __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com --------------------------------------------------------------------- The official User-To-User support forum of the Apache HTTP Server Project. See <URL:http://httpd.apache.org/userslist.html> for more info. To unsubscribe, e-mail: users-unsubscribe@xxxxxxxxxxxxxxxx " from the digest: users-digest-unsubscribe@xxxxxxxxxxxxxxxx For additional commands, e-mail: users-help@xxxxxxxxxxxxxxxx
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