Hello,
I have a problem with the connection of these two Sun machine. Host A is running Solaris9 and host B is on Solaris10. Weird thing is A can ping B but B cannot ping A. I don't know what configuration set by the previous owner.
hostA:Solaris9 <172.16.1.1><--><172.16.1.2> solaris10:hostB
Thanks.
Since ping is composed of an icmp request and an icmp reply, firewalls can easily allow a ping to work one way and not the other. I would look for ipfilter or another firewall running on either host.
You can use tcpdump on host A to look at the raw traffic to see if host B's icmp request is reaching host A. If you see the icmp request from host B but not the icmp reply from host A, then the issue lies with host A.
If you don't see the icmp request reaching host A, then look at host B to solve the problem. If you see the icmp reply leaving host A, then the problem also lies with host B.
