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I have been trying to create a ssh tunnel from a Linux box to a mysql server on a Solaris box with: ssh -i <some_private_key_file> -L 3333:localhost:3306 root@<Solaris box> command on the Linux box.

On trying to connect to the mysql server from the Linux box with command mysql -P 3333 -h -u root -p, I am getting the following error: ERROR 2013 (HY000): Lost connection to MySQL server at 'reading initial communication packet', system error: 0

Now running the sshd (Solaris) on debug level 3 I get the following error:

debug1: server_input_channel_open: ctype direct-tcpip rchan 3 win 2097152 max 32768
debug1: server_request_direct_tcpip: originator port 34100, target localhost port 3306
Received request to connect to host localhost port 3306, but the request was denied.
debug1: server_input_channel_open: failure direct-tcpip

And also getting the following error: channel 3: open failed: administratively prohibited: open failed

On the Solaris machine:

  • SSH version : Sun_SSH_1.1
  • cat /etc/release : Solaris 10 11/06 s10x_u3wos_10 X86
  • uanme -a : SunOS unknown 5.10 Generic_118855-33 i86pc i386 i86pc

On the Linix box :

  • SSH version : OpenSSH_5.3p1, OpenSSL 1.0.0-fips 29 Mar 2010
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up vote 1 down vote accepted

Fixed : There was two conflicting AllowTcpForwarding value in the sshd_config. Somehow the first one with value no was taking precedence. Might be a bug with OpenSSH 4.2p1

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