Block outgoing connection (an IP address) in c#

I开发者_开发知识库 would like to block an IP from c#.

I looked up MSDN, and found only firewall exception usage.

Is there any other simpler solutions? I don't want to touch my client's computer setting.

No, only the OS or an application that hooks into the OS can block outgoing connections. The firewall is the best place to do this.