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  1. #1
    Untangler malvivent7's Avatar
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    Jan 2012
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    Ferrara, Italy
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    Default Strange ssh problem froma linux machine

    Hi, i have untangle 14.2 full apps installed and i have a strange issue; i have a rule that bypass all sort of inspection between my internal lan and a specific ip on internet that is solely usable by a specific public ip belonging to me. If i ssh to this external machine through the correct public ip by a machine like my pc (ssh vnt.pm) i can connect (forgot about the permission denied) without a problem but if i try by another two machines i receive this error

    ssh: connect to host vnt.pm port 22: Connection refused


    Someone can help me thanks in advance.
    machines are one windows and the other two one centos 6.8 and debian 9.

  2. #2
    Untangler jcoffin's Avatar
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    Default

    I would run tcpdump on the remote server to see if the correct IP is seen.
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  3. #3
    Untangler malvivent7's Avatar
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    Default

    Quote Originally Posted by jcoffin View Post
    I would run tcpdump on the remote server to see if the correct IP is seen.
    Thanks jcoffin for your reply but unfortunately i cant do nothing to interact with the remote server; i tried also to test ssh vs github with the command
    ssh -T git@github.com
    and after exactly 5 times (in which i test the login and disconnection with ctrl-c) i receive
    ssh: connect to host github.com port 22: Connection refused


    if i try the same command in a windows machine or from the untangle firewall console i can test the same command several times without issue.
    Where cani look for?

  4. #4
    Untangler jcoffin's Avatar
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    Try -v on ssh to see the debug info from ssh. It might help.
    Attention: Support and help on the Untangle Forums is provided by
    volunteers and community members like yourself.
    If you need Untangle support please call or email support@untangle.com

  5. #5
    Untangler malvivent7's Avatar
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    Default

    Quote Originally Posted by jcoffin View Post
    Try -v on ssh to see the debug info from ssh. It might help.
    Found it finally!! It's a signature on IPS
    "ET SCAN Potential SSH Scan OUTBOUND" that block outgoing ssh. Whitelisted for specific range and all went well. I don't understand why only from linux machines and not from windows machines but anyway ...

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