I would like to access my Ubuntu PC remotely via SSH. The SSH daemon is currently listening on port [x].
My router is a ASUS DSL-N12E.
I have created a rule for the firewall with the following parameters:
- Protocol: TCP
- Direction: Downstream
- Source Port: [x]
- Dest IP/Mask: 192.168.1.100/255.255.255.255
- Dest Port: [x]
and a NAT Virtual Server rule with the following parameters:
- Protocol: TCP
- Local IP: 192.168.1.100
- Local Port: [x]
- WAN IP: pppoe1
- WAN Port: [x]
I'm able to connect to the SSH server from the local network, using ssh -p [x] myuser@192.168.1.100
, but I can't do it using ssh -p [x] myuser@mypublicip
. I'm guessing there's something wrong with the router configuration although canyouseeme.org says that port [x] is open.
Any ideas about what I might be doing wrong?
Best Answer
This is a common issue on a lot of routers.
It sounds simply like you need to enable
NAT reflection
,Nat hairpin
orNAT loopback
, the name changes on different routers - but be warned that not all routers support it.... Please check your firmware version, it looks like your router either didn't support it out the box, or has been buggy... I just found this, although 6 months old, it indicates a firmware fix where loopback wasn't always working. (Don't get from here - check Asus directly for even newer).