http://coinig.com/
And with Multibit: https://multibit.org/en/help/v0.5/help_signAndVerifyMessage.html
Coinig is broken I wouldnt recommend using it.
If you want to avoid core connecting to another node add the following line to your bitcoin.conf[1] file (create it in your ~/.bitcoin (linux) or %APPDATA%/Bitcoin (windows) folder if needed)
[1] https://en.bitcoin.it/wiki/Running_Bitcoin#Sample_Bitcoin.conf
I assume it's the same thing as doing this ? Here is what I've done :
and It's now says "NO block source available" , I assume it's working fine then thanks
Yes, setting a non existing proxy should do the trick as well. "No block source..." is the message you want (at least in your case) .