Not able to ping

[shanmuhanandam]

Hi,
I have a hp machine 11.23 is installed.im able to ping the other machines from this machine. but not able to ping this server from other machines.I have tried to ping from same N/W and Other N/W also. pls help me...

[Steven E. Protter]

Shalom,

Check /etc/hosts
/etc/rc.config.d/netconf (gateway)

Network switch configuration and firewall can also interfere.

SEP

[Andrew Young_2]

Hi.

First test to do would be to run:

lanscan
This will give you which devices you have set up.

Then run ifconfig lan0 (and if necessary ifconfig lan1)

See if you can ping those IP addresses from the local host and that they are the same ones you thought you were pinging from the machine itself.

Secondly if you have addresses configured on both interfaces make sure they are not on the same subnet. If they are then disable one using ifconfig [lan0|lan1] down and try to ping the other remotely. In general on HP-UX you cannot have two interfaces on the same address unless you are peering them.

HTH

Andrew Y

[shanmuhanandam]

hi,
lanscan is showing lan1 is up. i have configured only one lancard.

regards,
shanmugam

[Andrew Young_2]

Hi.

Can you ping that interface from the local host?

Andrew Y

[V. Nyga]

Hi,

how have you pinged - ip or name?

If you tried to ping the name, try ip-address first, then check name resolving of the other ws. Do they know the name?

Volkmar

[rick jones]

If the other systems from which you are trying to ping on in the same broadcast domain, and are running HP-UX (or have the Linux package installed) you can try running linkloop to do a "link-level" ping to verify physical connectivity.

Apart from that, might check the arp caches on both sides to make sure that everyone has the correct MAC address for the given IP address etc etc.

You might also run tcpdump (HP Internet Express bits) on the interface when you are trying to ping from the remote systems to see if the ICMP Echo Requests are reaching the box. You might also be able to check that without tcpdump by looking at the output of netstat -s -p icmp . "Pings" are ICMP Echo Requests and Replies.

[tom quach_1]

Hi shanmuhanandam,

with this symtom, i would beleive that you have
ip filter instslled.
check if ip filter is running by
# ipf -V
and you can stop it by
#/sbin/init.d/ipfboot top or start

..and if you have ip filter installed and want to keep it on and still allow someone to ping just comment out the last line of this file
/etc/opt/ipf/ipf.conf
#Block any incoming connections which were not explicitly allowed
block in log all #comment this line

and restart ipfilter
#/sbin/init.d/ipfboot stop and then start.

Hope this help.
Tom

[shanmuhanandam]

Hi all
While installing the os i have selected all the pathes. i have select the security level 30. can it disable the ping and telnet? If yes, which file should i modify?
Regards,
shanmugam.

[shanmuhanandam]

Hi,
thanks for everbody's reply. the issue is solved. It is bcoz of security level 30 enabled.( DMZ.conf).

regards,
shanmugam.

[shanmuhanandam]

Hi,
thanks for everbody's reply. the issue is solved. It is bcoz of security level 30 enabled.( DMZ.conf).

regards,
shanmugam.