How to set up remote control

Users questions: If my home computer, to remotely control their own office computer, and sometimes does not work, at home and can complete the work. Two machines are installed vista home systems, the company is the xp system, and the company's machines are allocated through two routers out (do not know the IP address is not the network is Of the IP address looks like or not). With the windows can not use their remote control (estimated IP address or not) I tried in two machines under the same router can be remotely controlled, but not at home, do not know how to deal with and how to determine the IP address of the
Experts answer: first wants to Clearly within the IP network and external network IP (Internet IP address) address two different concepts. Require the company to achieve the goal set on the router port mapping, office machine that is mapped to port 3389 WAN IP of the machine on port 3389, you can set up port mapping on the router, (see h B% BF% DA% D3% B3% C9% E4% C9% E8% D6% C3 & f = 1 & tn = sitehao123) can also be the simplest solution is the router set up your office machine to "DMZ host." For example: IP-aaa office machines a, its external network IP is: bbbb, the above settings, the home visit bbbb: 3389 is equivalent to a visit to aaaa: 3389, aims to achieve. As for how to know the office machine outside the network IP (bbbb)? If the router is static IP, you can see the router settings, and if the router is dynamic IP, to achieve the purpose of the trouble, because the IP address is not fixed, you can use to access www.ip138.com office machines like the website. Finally, I wish you success.
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