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  • 1.  ping will work but not SSH

    Posted 06-14-2022 10:02
    Hello Given the setup:

    MX --- SW --- FW --- Server

    When pinging from MX to Server it will work without any issues, however SSH will not work from MX.
    FW was checked, i can see under security flow session both inbound and outbound traffic, there is a policy in place which is permitting SSH and icmp.
    Also if i ssh from the firewall it will also work.

    All is in place and everything should work, what am i missing?


  • 2.  RE: ping will work but not SSH

    Posted 06-15-2022 05:21
    what kind of server? if the TCP traffic is traversing your firewall, as i have been doing for the last 8 years... please blame the server! jajaja,  try a telnet instead of a ping, take captures on the server if possible that is what will give you the answer, probably authentication, if you dont see an authentication prompt then it is a firewall, either server or the FW in the middle.


  • 3.  RE: ping will work but not SSH

    Posted 06-15-2022 05:21

    Much more info is needed , can you post configs at all  ?

    does the Server have a fw policy as part of the OS, 
    is the FW a SRX  , it will show the number of packets in each direction this is useful.

    does the server have a single NIC, what is the OS. 

    Is there any opportunity for the return traffic to take a different path ?

    Simon Bingham