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Can ping IP over VPN but Can not Ping Hostname

mgamal-it
Dear All 

I created ipsec Vpn Between Sophos UTM 9 and Draytek 5510 i can ping by ip normally but can not ping by host name from 2 sides ??!! 

and created another ipsec vpn by draytek 5510 and draytek 5300 i can ping by ip and by host name from 2 sides ??!!

so whats wrong?


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  • 0
    If you VPN is configured correctly and you are only able to ping on IP and not on hostname then it's most likely name resolution that fails.

    If you try: ping hostname

    usually a Netbios broadcast message is put on the LOCAL lan asking all clients to respond if it's their name.

    If you have a working DNS-server that acts over the boundaries of the VPN and the domain names on both sites are equal it should work since there would also follow an automatich search for hostname.domainname.tld

    The netbios broadcast will not travel to other subnets, whereas the DNS request will.

    Managing several Sophos UTMs and Sophos XGs both at work and at some home locations, dedicated to continuously improve IT-security and feeling well helping others with their IT-security challenges.

    Sometimes I post some useful tips on my blog, see blog.pijnappels.eu/category/sophos/ for Sophos related posts.

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  • 0
    If you VPN is configured correctly and you are only able to ping on IP and not on hostname then it's most likely name resolution that fails.

    If you try: ping hostname

    usually a Netbios broadcast message is put on the LOCAL lan asking all clients to respond if it's their name.

    If you have a working DNS-server that acts over the boundaries of the VPN and the domain names on both sites are equal it should work since there would also follow an automatich search for hostname.domainname.tld

    The netbios broadcast will not travel to other subnets, whereas the DNS request will.

    Managing several Sophos UTMs and Sophos XGs both at work and at some home locations, dedicated to continuously improve IT-security and feeling well helping others with their IT-security challenges.

    Sometimes I post some useful tips on my blog, see blog.pijnappels.eu/category/sophos/ for Sophos related posts.

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