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by ray_drummond

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Ok, so I got stuck with finding out how to make this happen. Sometimes being a Net Admin sucks. Anyway, I work for a small company and I am endeavoring to setup some remote admin ability for us. Most of our clients do not possess a server in their locations, but 4-5 clients, a switch, router and broadband access modem (DSL/Cable). Part of the problem I am experiencing is coming from setting up the trigger ports on the routers to send them to the right machine. I've researched what ports need to be used and what protocols (UPD or TCP), but it still does not seem to work. Typically I face LinkSys routers, but have a smattering of others. Anyway, has anyone setup a remote service thru these routers with the firewalls setup? I need to be able to take control of a specific machine at a location. Thanks.

13 replies

by mikex

This is a NAT (Network Address Translation) Firewall, it works like this:

Your internal server IP address is - a.b.c.d
(replace the letters with your numbers) it's not visible/accessible from outside

Your ISP real IP address provided with the internet sevice on the router is b.a.c.d - this one is visible/accessible from outside but it's pointing only to a router

How NAT works: In your router setup there's a section called "Virtual Server" or NAT (VS)

which translates:

VS IP address and port to INternal Address & Port

IP: b.a.c.d - Port:1723 to IP: a.b.c.d - Port:1723

this short example will translate an outside request to the IP b.a.c.d port 1723 (VPN port) to your Internal server IP address a.b.c.d port 1723

Hope this will help you...

by sgt_shultz

write down all os's of clients and servers and post for us. mostly remote access is for admin is built into windows. start by researching your optioins for your os at support.microsoft.com. do you need to admin or let users at resources? why not use vpn?
so you are saying you cannot seem to get port forwarding to work? give us specific application you are having problem with?

by ray_drummond

The server is not in play right now. I'm trying to go from a client to another client thru a router. I just need to admin. I have not tried VPN yet. The port forwarding is native to the router I'm using and I'm trying to use the Remote Assistance feature of XP Pro.

by matt.sokoloski

thought of another option... The wrv54g from linksys lets you set up vpn connections using a client. I havent tried yet but it comes in the latest firmware

by ray_drummond

The trouble is coming trying to get this setup without a server to connect to 3-4 different workstations. All I see in the router is to set a 1-to-1 relation on the port triggering. Will I need to set an actual machine up on site as a host so I can see the others? VPN will work great for that.

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