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.NET Forum / .NET Framework / New Users / July 2005KNOW MI WAN IP WITH C#
Hello evrybody, I have to implement a simple module that can retrieve my own ip adress but if i am behind a firewall i have to get my wan ip that's to say my external ip adress!!! I don't know how to do this!!!I see a little at WMI but anything. My dns client updater can see my external ip, but if i launch ipconfig i see only my lan 192.168.1.3) Thank for helping!! There is really no way to do that reliably using your local system as the only point of query. Once IP packet leaves your system it can get translated and changed any number of times without your system's knowledge, that is hte whole point of NAT. If your firewall is local to your PC, you can query the firewall configuration to determine external IP address, however, if firewall is a different system - the only truly reliable way to determine translated IP address is to query a remote system outside your firewall for it to report which IP address you APPEAR to be coming from. > Hello evrybody, > [quoted text clipped - 7 lines] > > Thank for helping!! that's to say i have to implement a server located on the web and to ask him for my ip adress??? How czn I do in C# to ask various websites that print my ipadress? > There is really no way to do that reliably using your local system as the > only point of query. Once IP packet leaves your system it can get [quoted text clipped - 23 lines] >> >> Thank for helping!! You may create a webservice that'll return client's IP and use "wsdl" command to generate proper C# class for you if you want. Or create a plain ASP/ASP.NET page that'll return client's IP, and use webclient class to read it. There're many ways to implement it. "Soussan Mikael" <mikael@soussan.homeunix.net> ¼¶¼g©ó¶l¥ó·s»D:42d61152$0$1254$8fcfb975@news.wanadoo.fr... > that's to say i have to implement a server located on the web and to ask > him for my ip adress??? [quoted text clipped - 28 lines] >>> >>> Thank for helping!! Free MagazinesGet these publications absolutely FREE for up to 12 months. There are no hidden fees and no obligation. Simply choose a title, complete the application form and submit it. Read more ...
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