Problem binding OpenSSH_6.2p2 to IPV4 stack
L. V. Lammert
Mon Jul 15 21:50:00 GMT 2013
After troubleshooting an AutoSSH problem last week, it appears that on
this 2003R2 box sshd cannot bind to the IPV4 stack! Rather, with the
default configuration it binds to IPV6 (and supports a loopback connection
fine), but a remote connection fails. When sshd is forced to bind IPV4
("Addressfamily inet"), sshd cannot start.
With default sshd config, connection to the autossh tunnel from a remote
ssh_exchange_identification: Connection closed by remote host
debug1: channel 2: connection failed: Connection refused
connect_to 127.0.0.1 port 2206: failed.
debug1: channel 2: free: ::1, nchannels 3
Any pointers on troubleshooting would be greatly appreciated, ..
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