Re: ICMP Weirdness (old bug resurfaced?)

Alex Buell (alex.buell@tahallah.demon.co.uk)
Sat, 1 May 1999 10:16:11 +0100 (GMT)


On Sat, 1 May 1999, Keith Owens wrote:

> You have some service defined as running on localhost but it is not
> present. Since you get this for ftp/telnet/browsing/email, the
> service is probably DNS. Check /etc/resolv.conf, do you have
> "nameserver localhost" or "nameserver 127.0.0.1"? If so, are you
> really running DNS on your box? If the missing service is not DNS, as
> root run "tcpdump -nlpilo" to see which service you are trying to
> access. Either way, you need to start the service or change the config
> for the missing service to remove localhost.

Most interesting - here's the results from tcpdump

10:13:40.610222 127.0.0.1.717 > 127.0.0.1.111: udp 56
10:13:40.610222 127.0.0.1.717 > 127.0.0.1.111: udp 56
10:13:40.610356 127.0.0.1 > 127.0.0.1: icmp: 127.0.0.1 udp port 111
unreachable [tos 0xc0]
10:13:40.610356 127.0.0.1 > 127.0.0.1: icmp: 127.0.0.1 udp port 111
unreachable [tos 0xc0]
10:13:40.900172 127.0.0.1.660 > 127.0.0.1.111: udp 56
10:13:40.900172 127.0.0.1.660 > 127.0.0.1.111: udp 56
10:13:40.900268 127.0.0.1 > 127.0.0.1: icmp: 127.0.0.1 udp port 111
unreachable [tos 0xc0]
10:13:40.900268 127.0.0.1 > 127.0.0.1: icmp: 127.0.0.1 udp port 111
unreachable [tos 0xc0]

Looks like it's trying to access sunrpc services but I do not run sunrpc
on my machine AT all. Must be something I've cocked up with the machine's
configuration. I've checked inetd.conf and all sunrpc services are
disabled, quite properly.

Cheers,
Alex

-- 
"A mind opened by new ideas can never return to its original limits"

http://www.tahallah.demon.co.uk

- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.rutgers.edu Please read the FAQ at http://www.tux.org/lkml/