remove ssh version 1

Hi, can you detail further what happens when you "Click on stop remote login via security/firewall settings"?

Is this it?

service ssh stop

Or do you want to maybe just move thses out of /ysr/bin/

ssh
ssh-add
ssh-agent
ssh-keygen
ssh-keyscan

Just until reboot, removing/moving the files should thwart it iirc.

bnale:

You don't have to disable ssh if your concern is the vulnerability in ssh protocol 1 (not version; 10.4.11 ships with OpenSSH version 5.1p1; you can check this with a "ssh -v" at a Terminal prompt)

You can disable Protocol 1 and still keep ssh running, only accepting the safer Protocol 2 connections:

Using your favorite text editor, open this file; (always a good idea to save a clean backup copy)
/etc/sshd_config

Look for the following line; you can't miss it; it's the second line after the comments;
*#Protocol 2,1*

Edit that line so it looks like this (remove the hash sign and erase the number 1);
*Protocol 2*

Save your changes, close the file.

That's it. Next time you reboot or restart the ssh daemon, it'll only be using Protocol 2.