Interesting challenge getting SSH from outside to my VMWare guest

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Operating Systems Linux Interesting challenge getting SSH from outside to my VMWare guest
# 1  
Old 11-04-2010
Interesting challenge getting SSH from outside to my VMWare guest


I'm working on getting more acquainted with VMWare and the SUSE SLES OS, so I've downloaded and created a guest running SLES 11 SP1. This works great, no problems. However, there's some funny-ness (is that a word?) when I'm attempting/testing to SSH from outside my local LAN into the guest.

Let my sum up my setup:

The VMWare server
- Is a Windows 7 with LAN-ip (static).
- The guest is running with a bridged configuration, not NAT.
- Windows Firewall has been disabled in an attempt to get some data in the SUSE firewall logs.

Another PC in my LAN
- Is also a Windows 7 with LAN-ip (also static).
- Connects just fine to the VMWare guest on (see next section).
- Has Windows Firewall running fine (also attempted to disable)

The SLES guest
- Is configured with LAN-ip (also static, obviously).
- SSH port has been changed from 22 -> 1337.
- The SUSE firewall allows SSH from to make it accessible from my LAN area (this is going to be narrowed down later, just to please the security minded people Smilie)
- The SUSE firewall DOES NOT allow SSH from outside the LAN, but should be allowed on a IP-by-IP basis.

External Linux Debian VPS
I have an external Linux Debian VPS solution. When I ssh to my WAN IP from this, and supplying port 1337, it just eventually times out, clearly indicating something's amiss somewhere in my configuration.

My ISP-provided router setup
- Portforwards port 1337 to

So, what I'm pondering about is what I can try to get the traffic actually arriving at my guest. I have read alot about running the guest in NAT configuration and then using the VMWare tools to portforward port X to the VMWare's assigned IP address.

I am not really very experienced in networking (which is why I'd really like to avoid a NAT solution until I get a hold of stuff), but I have the idea that if I without further ado can access my VMWare guest from my local LAN just by providing the statically assigned IP, I would figure that I'd get it off just by portforwarding the assigned SSH port directly to my guest's IP?

I hope that I have provided sufficient information but if not I shall happily provide additional details as necessary. I hope that you might be able to push me in the right direction
# 2  
Old 11-04-2010
Could you post the output of these console commands in the guest (have to be run as root):
ifconfig -a
ip route
iptables -L -n

Also, if possible, post the output of traceroute -n <wan ip>
This User Gave Thanks to pludi For This Post:
# 3  
Old 11-04-2010
Hello Pludi,

Thank you very much for your time!

After a closer inspection I realised that I received "martians" in my /var/log/warn. Having absolutely no idea what it meant, I googled it without being much wiser.

I then realised I had a problem with my routes since I couldn't resolve any DNS or ping the outside world.

I found that a static route was missing, so after issuing

route add -net gw br0

Which made my route look much better

ivmsles01:/var/log # ip route sh dev br0  proto kernel  scope link  src dev lo  scope link 
default via dev br0

I got back on track, the martians went back to Mars and after a bit of firewalling, my server responded nicely to external hosts as well on SSH.

I'm really sorry that I didn't really do my homework completely before crying out for help - if you get to Denmark some day, I'll buy you a beer for your trouble Smilie

Last edited by brightstorm; 11-05-2010 at 02:00 PM.. Reason: changed "ip route add" to "route add" which is the correct command
# 4  
Old 11-05-2010
I thought it would be something like that. Glad you found the problem and learned something new.
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