named listening on UDP
Tom Schmitt
TomSchmitt at gmx.de
Tue Apr 3 21:53:16 UTC 2007
Hi,
I have a (maybe) simple question, but google couldn't help me, so I try the list:
I downloaded Bind 9.3.4 and installed it on a Linuxserver (Debian-Etch). It's working fine. (Thank you for this piece of fine software!)
Because I'm a little bit paranoid I checked the ports where named is listening. netstat -tanp brought what I expectet: Port 53 on the external interface and port 53 and port 953 (for rndc) on the localhost-interface.
But netstat -uanp surprised me a little bit. Besides the expected ports 53 on the localhost and the external host, named is also listening on UDP-port 33186 on the external port. What is that for? I know of no reason to open this port. (also, named is listening on udp6-port 33187)
Can anyone tell me what the purpose of this open port is?
Thanks,
Tom.
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