HP-UX 11.23 Telnet/ping to fail. Telnet/ping from succeed

[Tony Whitfield]

I'll start with a disclaimer...
Please forgive me.
Unix & Networking are not what I do.
With that said, I'll go ahead and make my plea for assistance.

I have an installation of HP-UX 11.23 on a rx2620. From this system I can ping, telnet, ftp, etc... to any other server on the same network.

But...

I can not ping, telnet, ftp, etc... from any other server to my rx2620.

It's as if the rx2620 is on a one way steet.

I've installed and configured the lan cards (lan0, lan1 & lan3). They all have the following configurations:

# lanscan
Hdw Net-Interface NM MAC HP-DLPI DLPI
State NamePPA ID Type Support Mjr#
UP lan1 snap1 1 ETHER Yes 119
UP lan0 snap0 2 ETHER Yes 119

I've checked the rc.d.config and inetd.conf files for clues but I've yet to fine any useful information.

I'll take any and all suggestions.

Thanks.

[Steven Schweda]

> I can not ping, telnet, ftp, etc... from
> any other server to my rx2620.

As usual, it might help to see the actual
command(s) used, and the actual output from
it (them).

Can the problem system talk to itself (ping,
telnet, ftp, et c.)?

It might help to know the actual IP addresses
(and netmasks) of the systems involved
("/usr/bin/netstat -i[n]").

It might help to know the routes they use
("/usr/bin/netstat -r[n]"). (It's possible
that this system doesn't know to send
anything back to the other systems.)

[Anshumali]

As Steven said,
it will be useful to see the error message encountered when you tried those commands. It will be premature to say, but it may be you have this server after firewall or have bastile installed on this system. Could be due to services not running/configured
in /etc/inetd.conf

What is the error you get, or is there something in syslogs...

[Tony Whitfield]

Steven, thanks for the reply.
I'm still trying to figure this out.

I hope that I can relpy with the information that is needed.

Here is the output of the netstat commands that you mentioned:

# netstat -i
Name Mtu Network Address Ierrs Ipkts Opkts Oerrs Coll
lan2 1500 192.168.1.0 Maine 0 546 35 0 0
lan1 1500 192.168.1.0 Maine 0 542 22 0 0
lan0 1500 192.168.1.0 Maine 0 542 22 0 0
lo0 4136 loopback Maine 0 3130 3130 0 0
#
#
# netstat -r
Routing tables
Destination Gateway Flags Refs Interface Pmtu
Maine Maine UH 0 lo0 4136
Maine Maine UH 0 lan1 4136
Maine Maine UH 0 lan0 4136
Maine Maine UH 0 lan2 4136
192.168.1.0 Maine U 2 lan2 1500
192.168.1.0 Maine U 2 lan1 1500
192.168.1.0 Maine U 2 lan0 1500
127.0.0.0 Maine U 0 lo0 0



Well...
That looks like something my 5 year old would draw...
I've attached a file with the output.

[Tony Whitfield]

Anshumali,

There is not a firewall or anything else on this network.
It's a closed loop network without any connection outside of the room that the servers are sitting in.


There is nothing in the sys logs on the servers that pertain to the telnet/ping etc...

What a PITA this is.... :-)

I simply want all my servers to get along with each other. ;-)

[Steven Schweda]

Can't tell where Maine is from here. Try
again with the "n" in each command.

> Can the problem system talk to itself (ping,
> telnet, ftp, et c.)?

Still wondering.

> As usual, it might help to see the actual
> command(s) used, and the actual output from
> it (them).

Still true.