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Date:      Sat, 19 Sep 1998 21:13:44 -0700 (PDT)
From:      Randy Bush <randy@psg.com>
To:        freebsd-questions@FreeBSD.ORG
Subject:   tcpd and ssh X forwarding
Message-ID:  <m0zKasa-00000xC@roam.psg.com>

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FreeBSD 3.0CAM-19980712-SNAP, ssh x forwarding gets in trouble with tcpd

 o i ssh into test.psg.com

 o DISPLAY seems appropriately set

    test.psg.com:/usr/local/etc# env | grep DIS
    DISPLAY=test.psg.com:10.0

  o if i invoke emacs with x forwarding it dies

    test.psg.com:/usr/local/etc# emacs /usr/local/etc/hosts.allow
    [2] 16394
    test.psg.com:/usr/local/etc# Sep 19 18:35:25 test sshd[16351]: error: \
             Fwd X11 connection from test.psg.com refused by tcp_wrappers.
    [2]+  Segmentation fault      (core dumped) /usr/local/bin/emacs -i "$@"

  o but if i shoot hosts deny, it works

    test.psg.com:/usr/local/etc# mv hosts.deny foo
    test.psg.com:/usr/local/etc# emacs /usr/local/etc/hosts.allow
    [1] 16392
    test.psg.com:/usr/local/etc# mv foo hosts.deny

  o therefore it is a tcp_rwapper problem indeed.  yet i have

    sshd  : ALL

   in /usr/local/etc/hosts.allow, or i would not even have been able to ssh
   into the host.

clues solicited.  and i actually read as many man pages as i thought
relevant.  clearly i missed the right one.

randy

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