connectivity problem

[Glenn English <ghe () slsware com>]

One of the hosts on my LAN does not respond to incoming TCP/IP, sort of.
It's running RH9 Linux on a net of other Linux boxen and a couple Macs.

No host, including itself, can ping, ftp, telnet, or ssh to it's IP.
Pinging localhost works. Tcpdump on any host pinging it shows lots of
echo requests, but no replies. Tcpdump on it while being pinged shows no
incoming packets.

Mounting an NFS share fails saying the host doesn't have permission to
mount the fs. 

It gets out and receives perfectly. It's the machine I use for
administering the LAN, and I didn't know anything was wrong until I
tried to connect to it from out on the network.

But nmap gets to the IP from itself and from other hosts, Both Connect
scan and SYN scan ping and find all the open ports. IP sweep sees it.
The nmap packets appears in a tcpdump running on it.

There's no firewall. Iptables -L shows no rules and ACCEPT policy in the
3 packet filter chains.

Any suggestions?

-- 
Glenn English
ghe () slsware com


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