I think you are confused about how your router works.. First off, if a machine is connected to the LAN side of the router all of the ports are open. You do not have to do any port rules or anything for traffic that is on the lan side of the router.

So you should not setup triggering for port 22 at all. All triggering port 22 does is allow somebody to knock at port 22 and the router will open up and allow it through if it sees a corresponding outbound connection on port 22.

Example- I'm using SMTP on port 25 on 192.168.1.2, a local network machine. 192.168.1.2 sends an smtp packet to www.mail.com. www.mail.com responds to my ISP IP address. My router knows that 192.168.1.2 sent port 25 traffic to www.mail.com so port 25 is triggered open and the router forwards all of the port 25 traffic to 192.168.1.2. Port triggering will not work a connection that you are attempting to open from the outside.

What you want to do is this-

On your router setup port forwarding, which is different than port triggering, to forward all data at port 443 to port 22 of 192.168.1.2(or whatever your LAN machine IP is).

Then when you open up your SSH session you will want to specify your public IP at port 443.

You need to make sure that the linksys has allow anonymous wan traffic enabled. You are complicating the issue by looking at port triggering which is not used to allow inbound connections.