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Date:      24 Dec 1998 16:55:52 +0100
From:      Dag-Erling Smorgrav <des@flood.ping.uio.no>
To:        isp@FreeBSD.ORG
Subject:   pidentd
Message-ID:  <xzpaf0d5ybb.fsf@flood.ping.uio.no>

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I installed pidentd from the ports and set up inetd to handle ident
requests, but efnet.telia.no claims that it gets no ident response
three out of four times. Here's a tcpdump of one such session:

des@flood ~$ tcpdump -i ed0 \( dst port 113 and dst host flood \) or \( src port 113 and src host flood \)
tcpdump: listening on ed0
16:13:27.013637 efnet.telia.no.6928 > flood.ping.uio.no.auth: S 1225673011:1225673011(0) win 512 <mss 1460>
16:13:27.013937 flood.ping.uio.no.auth > efnet.telia.no.6928: S 1319906409:1319906409(0) ack 1225673012 win 17520 <mss 1460> (DF)
16:13:27.318156 flood.ping.uio.no.auth > efnet.telia.no.6907: S 1311276730:1311276730(0) ack 229293295 win 17520 <mss 1460> (DF)
16:13:29.818138 flood.ping.uio.no.auth > efnet.telia.no.6928: S 1319906409:1319906409(0) ack 1225673012 win 17520 <mss 1460> (DF)
16:13:30.006699 efnet.telia.no.6928 > flood.ping.uio.no.auth: S 1225673011:1225673011(0) win 32120 <mss 1460>
16:13:30.006919 flood.ping.uio.no.auth > efnet.telia.no.6928: . ack 1 win 17520 (DF)
16:13:35.818201 flood.ping.uio.no.auth > efnet.telia.no.6928: S 1319906409:1319906409(0) ack 1225673012 win 17520 <mss 1460> (DF)
16:13:36.007252 efnet.telia.no.6928 > flood.ping.uio.no.auth: S 1225673011:1225673011(0) win 32120 <mss 1460>
16:13:36.007462 flood.ping.uio.no.auth > efnet.telia.no.6928: . ack 1 win 17520 (DF)
16:13:47.818309 flood.ping.uio.no.auth > efnet.telia.no.6928: S 1319906409:1319906409(0) ack 1225673012 win 17520 <mss 1460> (DF)
16:13:48.008423 efnet.telia.no.6928 > flood.ping.uio.no.auth: S 1225673011:1225673011(0) win 32120 <mss 1460>
16:13:48.008644 flood.ping.uio.no.auth > efnet.telia.no.6928: . ack 1 win 17520 (DF)
16:13:57.318420 flood.ping.uio.no.auth > efnet.telia.no.6907: R 1:1(0) ack 1 win 17520 (DF)
16:14:11.818561 flood.ping.uio.no.auth > efnet.telia.no.6928: S 1319906409:1319906409(0) ack 1225673012 win 17520 <mss 1460> (DF)
16:14:41.818826 flood.ping.uio.no.auth > efnet.telia.no.6928: R 1:1(0) ack 1 win 17520 (DF)

The ident entry in my inetd.conf looks like this:

ident   stream  tcp     wait    kmem:kmem       /usr/local/sbin/identd  identd -w -t120 -l

Does anybody have any idea what's wrong or do I have to run a packet
sniffer to find out what they're actually saying to eachother?

DES
-- 
Dag-Erling Smorgrav - des@flood.ping.uio.no

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