Different place here can svn checkout, but there can't

the same code With two Mac, when 开发者_JS百科at home, I can checkout the code from the svn server successfully, but when I in my office it can't be checked. And the warning message is: svn: Can't read from connection: Operation timed out

The operating system is Mac OS X Lion on both

Which protocol do u use to connect to your repository? It may happen if your firewall at your office do something with the port used by your protocol.