Sorry mike.. I dont have a 536, but have temporarily allowed SSH through a ST585 to Linksys router that was set up behind it... but Ive never actually tried accessing a ST direct via SSH direct
What I did was ST 585
>> Toolbox
>> Game + Application Sharing
At the bottom under pick a task
>> Assign a game or application to a local network device
Under Assigned Games and applications, from the drop down menu
>> Select Secure Shell Server (SSH)
Under Device
>> Add the LAN IP of the device to Connect to. (so it would be the LAN IP of the router).
However.. like you say Im not aware if the ST does allows SSH into the box itself.. Ive only ever accessed it via http, telnet or ftp. It would depend if the ST has a SSH server?
Couple of options either restrict the IP addresses from which telnet can connect.. or
Set up an SSH server on a local PC.. SSH into the PC and then access the router from the LAN side. (not sure if this would work)
.. or use something like VNC to forward to a local machine and then access the router from the LAN.