update

services/admin-guide/ssh_gateways.md

@@ -90,6 +90,10 @@ Howto identify and kill high load sessions on the ssh gateway, useful commands f
 `w` will list all user connections (see manpage for details)
 `w <username>` will list connections for a specific user
  
+### Show users most traffic
+```bash
+[ ~]# nethogs
+```
  
 ### Show heavy CPU consumers
 ```bash
@@ -160,7 +164,7 @@ builder_b pts/41       pc9681.psi.ch    Tue Oct 10 11:08   still logged in
 32177 sshd: wally_e@pts/10
 32286 sshd: wally_e@pts/68
 ```
- 
+
  
 Terminate Sessions