I want to cut down the number of random people/bots trying to ssh into the server.

Model : TL-ER5120 Hardware Version : TL-ER5120 v2.0 Firmware Version : 1.0.8 Build 20140212 Rel.36037 ISP : Comcast I'm trying to forward external port 2222 to internal port 22 and I can't seem to...