Single port forwarding to multiple machines

[ariban99]

Hi,
Is there a way to forward a single port to multiple machines on my network?
I have 3 dvrs, for some reason i cant change the port they use and they all use the same port.
if i create an alias with 3 ip address as such (my internal lan)
192.168.1.88
192.168.1.89
192.168.1.90

and i go to nat and create a new nat and rule to forward port 67 to the above alias, it wont work, i can not remotely connect.

if i only open this port for ONE machine at a time, then it works.

so my question is, is there a way to make a single port be opened to multiple machines / ip on the internal network?

Thank you
Ben

[JKnott]

You have to use 3 separate port numbers, 2 non-standard, on the WAN side and forward them to the 3 DVRs.  This means you'll also have to specify the port numbers for the 2 non-standard ones when you try to access them.

[johnpoz]

For starters why would you be forwarding 67?  Is that the port, that is a dhcp port.  Did you just random pick that port?

To show you what Jknott is talking about.  I doubt you want 67 so lets say you want to access your dvr on port 80 which seems more likely.

You would setup these forwards

publicIP:80 –-> 192.168.1.88:80
publicIP:81 ---> 192.168.1.89:80
publicIP:82 ---> 192.168.1.90:80

Then when you want to access say 1.89 you would connect to your publicIP:81 it would be forwarded to 1.89:80

[jimp]

Or don't do any of that. You should not expose weak systems like DVRs to the Internet directly. Use a remote access VPN to reach your internal network and you won't have any of these problems trying to connect to the DVRs.

[johnpoz]

^ yes this is much better way to do it.  This is how I access anything on my network.  I don't have any forwards other than to my ntp server that is member of the ntp pool.