Accessing Facebook in Syria?

I am in Syria and the need to get on Facebook. I have tried many proxy servers, but not working well. I know local people to change the proxy settings in the browser, but do not know what information to use. Can anyone help me? I'm using a Mac Safari to Firefox [not working for some reason]. Thanks!

SDMO the proxy used in Facebook in Syria is port 443 212 116 220 164 one day, usd.lanta port-net.ru 8080

Change LAN and Proxy settings on firefox