Firewall/NAT

Hi All,

I have deployed a remote desktop server (Server 2012 R2) inside my LAN for external access to this server but I cannot connect to this. I have reviewed and recreated setting a few times now and getting nowhere.

I am no Network Engineer so even if this is obvious to some I would love to be able to get this working,

M0n0wall is setup as WAN (DHCP / Static via MAC Allocation) 172.*.*.200 and LAN 192.168.0.1 in Hyper-V 2012 R2

NAT: Inbound,
WAN     TCP/UDP     3389     192.168.0.2     3389     JumpBox RDP

Firewall WAN Rules,
TCP     *     *     192.168.0.2     3389     NAT JumpBox RDP

Firewall Logs,
X     (Time)     WAN     172.*.*.160, port 61439     192.168.0.2, port 3389     TCP

I am at a loss to why this will not work but it seems to be something about this port 61439 that seems to be the problem, however I have no idea what this is and it changes every time a connection attempt is made.
This happens with cmd, 'mstsc /v:172.*.*.200' and with 'mstsc /v:172.*.*.200:3389'

If anyone can please point me in the appropriate direction this will be amazing.

Many thanks,

That should work.  However, that WAN address is not 172.16.*.200, is it?  You may have a double NAT going here.

Thanks Lee,

Interesting looking at this one, I have removed the block on private networks and this is all working.
This is not something I have done sooner as this is a 172.17 address and not 172.16

I am looking over this again, although been a link between 2 internal subnets I am not over concerned about security although some is good.

Have a merry Christmas

The RFC 1918 addresses in the range you are looking at are a 20 bit block:

172.16.0.0 - 172.31.255.255

So, you need to make sure that "Block private networks" on the WAN page is not checked.