Date: Wed, 8 Jan 2020 11:41:05 -0800 From: Kevin Oberman <rkoberman@gmail.com> To: tkhemili78@outlook.com Cc: freebsd-net <freebsd-net@freebsd.org> Subject: Re: ssh command hang Message-ID: <CAN6yY1uxZUOmGH_7ZxYSgszNrfjHGXZiCxYga=BEWHm=hoh1PA@mail.gmail.com> In-Reply-To: <CAF9L14HWeCyRRyWUMkxkMVGTb4e73q-qnAjAP3jB44a-z6Q%2B0w@mail.gmail.com> References: <CAF9L14HWeCyRRyWUMkxkMVGTb4e73q-qnAjAP3jB44a-z6Q%2B0w@mail.gmail.com>
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On Tue, Jan 7, 2020 at 12:31 PM Bejiita78 . <tkhemili78@gmail.com> wrote: > has anyone ever noticed that locally a system may respond just fine, but > running a command like port make install or top would cause the ssh session > to hang indefinitely? I have not experienced this, but some detail might help. Version of FreeBSD, CPU (amd64, arm64, i386, etc.), base SSH or ports. If ports, build config. If you run "ssh -vvv" and "sshd -ddd", does that provide any clues? Have you looked at interface stats on either end for errors and/or drops? If it is reasonably repeatable, a BPF packet capture (probably just headers as the payload will be encrypted) using tcpdump. ssh is heavily used and this is the first report of this I have seen, making it likely that this is a local issue such as a firewall or network issue. I have had sessions up for days, often doing things like running top or building large ports with no problems. I do recall a time when my terminal emulator would occasionally freeze, but I have not seen it for quite a while. I use mate-terminal. This was a problem with the emulator, though, and also would lock up local operation as well as ssh sessions. -- Kevin Oberman, Part time kid herder and retired Network Engineer E-mail: rkoberman@gmail.com PGP Fingerprint: D03FB98AFA78E3B78C1694B318AB39EF1B055683
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