Another option is to set up your browser with a temporary proxy address and then login to your site and make a post.
Get a free proxy address from
http://www.freeproxy.ru/download/lists/goodproxy.txt
Go to your browser Internet Options in the Tools menu and select the Connections tab. Click the LAN settings button and tick the Proxy Server box and type in the address and port number. Click Okay and Apply. Now when you logon to your site you should see that proxy address in WOL and get a red icon when you post.
When the test is finished remove the proxy address from your browser.
All of the above presumes you don't already have a proxy address via your ISP as Paul does.