HP-UX 11.11 - Incoming connection problem

I have machine with fresh installed HP-UX 11.11. All seem to work well, but there is one problem - while I have no problem to ping my Ubuntu 20.04 machine, access internet etc from HP-UX machine, I cannot ping HP-UX machine itself, therefore I cannot ssh, ftp and other things. Could anyone suggest me what could I do in order to make my HP-UX machine available in the network? (I have googled and found some info about ipfilter but I cannot find any signs of ipfilter in /etc/rc.config.d) ***HP-UX ip address is 10.0.2.15 - can ping Linux machine on 192.168.0.102 Linux ip address is 192.168.0.102 - cannot ping HP-UX machine on 10.0.2.15*** lanscan gives lan0 interface only, IP address is 10.0.2.15 I am pinging my Linux machine (192.168.0.102) from the HP-UX machine **ping 192.168.0.102** gives the following: 64 bytes from 192.168.0.102, icmp_sq=0, time=8, ms **ping community.hpe.com** gives the following: 64 bytes from 99.86.161.54, icmp_sq=0, time=45, ms Cannot ping from my Linux (192.168.0.102) machine **ping 10.0.2.15** gives the following: From 10.244.232.2 icmp_seq=1 Time to live exceeded From 10.244.232.2 icmp_seq=2 Time to live exceeded From 10.244.232.2 icmp_seq=3 Time to live exceeded From 10.244.232.2 icmp_seq=4 Time to live exceeded **ssh dragon@10.0.2.15** gives the following ssh: connect to host 10.0.2.15 port 22: No route to host (sshd is up and running on the HP-UX machine, ps -ef | grep sshd shows that)