ssh connections being dropped
Gabriel Gunderson
gabe at gundy.org
Sat Feb 11 20:38:56 MST 2006
Has anyone seen this before? After about 10 mins (or so) my shh
connection will be dropped. It's only on one of many remote servers
that I connected to. I don't believe it's on my (client) side. This
particular server is running openssh-server-3.9p1-8.RHEL4.9 Logs show
nothing. Google yields nothing to my untrained eyes. Possibly relevant
info below. Any ideas where to start on this one?
MESSAGE AS I'M DROPPED (ssh -vvv):
#####################################################################
[root at rms ~]# debug1: channel 0: free: client-session, nchannels 1
debug3: channel 0: status: The following connections are open:
#0 client-session (t4 r0 i0/0 o0/0 fd 4/5 cfd -1)
debug3: channel 0: close_fds r 4 w 5 e 6 c -1
Read from remote host tbmhost.com: Connection reset by peer
Connection to tbmhost.com closed.
debug1: Transferred: stdin 0, stdout 0, stderr 96 bytes in 2274.4 seconds
debug1: Bytes per second: stdin 0.0, stdout 0.0, stderr 0.0
debug1: Exit status -1
TCP TIMEOUT SETTING (stock CentOS 4 settings - works on other servers):
#####################################################################
cat /proc/sys/net/ipv4/tcp_keepalive_intvl
75
cat /proc/sys/net/ipv4/tcp_keepalive_probes
9
cat /proc/sys/net/ipv4/tcp_keepalive_time
7200
SSHD CONFIG:
#####################################################################
grep -v "#" /etc/ssh/sshd_config
Port 22
SyslogFacility AUTHPRIV
PermitRootLogin no
PasswordAuthentication yes
UsePAM yes
X11Forwarding no
TCPKeepAlive yes
Compression yes
Subsystem sftp /usr/libexec/openssh/sftp-server
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