Intern ist das Ziel die 10.0.0.59. Eine FW am Ziel ist ausgeschlossen, da im Subnetz die Zugriffe passen.
Das neue Forwarding zeigt von 55222 auf die 22. Der Aufruf und die Ausgabe hier:
nmap -p U:55222,T:55222 xxx.xxx.xxx.xxx
ssh kiter@xxx.xxx.xxx.xxx -p 55222 -v
nmap -p U:55222,T:55222 xxx.xxx.xxx.xxx
Starting Nmap 7.91 ( https://nmap.org ) at 2020-10-30 13:35 Mitteleuropäische Zeit
nmap : WARNING: Your ports include "U:" but you haven't specified UDP scan with -sU.
In Zeile:1 Zeichen:1
+ nmap -p U:55222,T:55222 xxx.xxx.xxx.xxx
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ CategoryInfo : NotSpecified: (WARNING: Your p... scan with -sU.:String) [], RemoteException
+ FullyQualifiedErrorId : NativeCommandError
Nmap scan report for blabla.de (xxx.xxx.xxx.xxx)
Host is up (0.034s latency).
PORT STATE SERVICE
55222/tcp filtered unknown
Nmap done: 1 IP address (1 host up) scanned in 1.23 seconds
ssh : OpenSSH_for_Windows_7.7p1, LibreSSL 2.6.5
In Zeile:2 Zeichen:1
+ ssh kiter@xxx.xxx.xxx.xxx -p 55222 -v
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ CategoryInfo : NotSpecified: (OpenSSH_for_Win... LibreSSL 2.6.5:String) [], RemoteException
+ FullyQualifiedErrorId : NativeCommandError
debug1: Connecting to xxx.xxx.xxx.xxx [xxx.xxx.xxx.xxx] port 55222.
debug1: connect to address xxx.xxx.xxx.xxx port 55222: Connection timed out
ssh: connect to host xxx.xxx.xxx.xxx port 55222: Connection timed out
Starting Nmap 7.91 ( https://nmap.org ) at 2020-10-30 13:35 Mitteleuropäische Zeit
nmap : WARNING: Your ports include "U:" but you haven't specified UDP scan with -sU.
In Zeile:3 Zeichen:1
+ nmap -p U:55222,T:55222 xxx.xxx.xxx.xxx
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ CategoryInfo : NotSpecified: (WARNING: Your p... scan with -sU.:String) [], RemoteException
+ FullyQualifiedErrorId : NativeCommandError
Nmap scan report for blabla.de (xxx.xxx.xxx.xxx)
Host is up (0.028s latency).
PORT STATE SERVICE
55222/tcp filtered unknown
Nmap done: 1 IP address (1 host up) scanned in 1.21 seconds