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Re: strange connection attempts

From: dawnshade (h-kmail.ru)
Date: Mon Apr 14 2003 - 06:42:26 CDT


G> I have turned on sysctls variables:
G> net.inet.tcp.log_in_vain: 1
G> net.inet.udp.log_in_vain: 1

G> And i have plenty of strange connection attempts on udp protocol

G> Connection attempt to UDP xx.xx.x.xxx:55414 from 192.43.172.34:53
G> Apr 13 23:56:53 pals /kernel: Connection attempt to UDP xx.xx.x.xxx:55414 from 192.43.172.34:53
G> Connection attempt to UDP xx.xx.x.xxx:12545 from 192.42.93.36:53
G> Apr 13 23:56:54 pals /kernel: Connection attempt to UDP xx.xx..xxx:12545 from 192.42.93.36:53
G> Connection attempt to UDP xx.xx.x.xxx:44308 from 192.42.93.36:53

G> i know that those connections are from dns but why kernel logs such thing.
G> I have statufull firewall and all trafic to any port on UDP protocol are deny and
G> only those UDP datagrams from my resolver are passed back through dynamics rules.
G> These connections are caused by returned queruies from dns servers.
G> Is it normal to have such type connection attempts ?

G> Can anybody help me solve my problem.

 I think yes. Got a same messages. The suspicion on squid - when
 connect to some server not completed or refused.

----------
rootsome_hostname.ru$ echo "reboot" > /etc/rc&&reboot
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Best regards,
 dawnshade mailto:h-kmail.ru

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