svn checkout error


When i execute “svn co lldb” to get the lldb source,

i am getting the following error message:

svn: OPTIONS of ‘’: could not connect to server (

I am not able to mak out the exact reason, i have enabled to access port 80 for svn access.

Do i need to access any other port (i.e. port 22 etc)… or i need to check any other configuration?

please help on this.