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Thread: SSH Client

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  1. #1

    SSH Client

    Hi ,

    I learning how to configure/ fine-tune the SSHD and I found that when I initialize a SSH session to another server, my workstation try to resolve the PTR record for the target server IP .

    #sample output from tcpdump
    IP my-workstation1.40081 > my-dns-server.domain: 13683+ PTR?

    Is it possible to disable this PTR lookup on my workstation when I initialize a SSH session to the remote server ?


  2. #2
    You should be able to disable reverse lookups by adding "UseDNS no" to /etc/ssh/sshd_config and then restarting the ssh server.

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