Linux – Can gedit on mac be used to edit files over ssh

I personally would not recommend this solution, but am posting this for the sake of discussion.

If you're willing to:

1. Change the Logging level of SSHd
2. Give your script access to /var/log/secure (or equivalent log file)

You can set "LogLevel DEBUG" in sshd_config to get the following entries each time an ssh key is used successfully for authentication:

Aug 13 11:51:13 myhost sshd[20195]: debug1: matching key found: file /home/myuser/.ssh/authorized_keys, line 3
Aug 13 11:51:13 myhost sshd[20195]: Found matching DSA key: 00:aa:bb:cc:dd:ee:00:c0:0b:fa:ce:00:00:ab:cd:ef

Writing a script to parse the logs and retrieve the relevant information would be trivial. You could probably grep for "sshd[$PPID]" to reduce the lines the script has to munge.

Do note that changing the loglevel to DEBUG will increase the size of your logs considerable and may violate the privacy of users. From "man sshd_config":

Logging with a DEBUG level violates the privacy of users and is not recommended.

I'm sure there are various steps one can take to make this solution a little less ghastly (e.g. logging sshd DEBUG info to a different file and controlling access to that file and the script) but at the end if the day it will still make you cringe.

I think it is likely the proxy implementation in putty does a CONNECT through the proxy server. Not many proxies are configured to accept this type of connection, as it means that the proxy can be used to piggyback any type of connection, whereas normally a proxy server is deployed to control what is allowed out of the perimeter.

If this is the case, then I expect that corkscrew is what you are after. This makes the initial connection to the proxy and initiates the CONNECT. You then push the ssh connection over this "tunnel".

There is a description of how you can do it here. It is likely that corkscrew is in the repository of your distribution, so try that first before downloading.