tmux conf added to ssh configuration

.ssh/config

     RemoteCommand tmux attach-session -t default_ssh || tmux new-session -s default_ssh
 
 Host multimedia_ext
+    HostName localhost
+    User dirk
+    Port 10022
+    RequestTTY yes
+    ProxyJump jump@mount-mockery.de
+    LocalForward 1880 localhost:1880
+
+Host multimedia_ext_tmux
     HostName localhost
     User dirk
     Port 10022