This morning I couldn't connect to TWS. I did a ping to gw1.ibllc.ch to check the server. I had a time out reponse. When I did a ping to gw1.ibllc.com, it was ok and in the other side I could surf on the internet correctly. My internet connection was ok. As I have a cable connection, I decided to try one of my dial-up backup ISP. Then I could connect and trade. I must say that i didn't like to trade in those conditions ! Orders executions were ok but order reports and quotes refreshing were not so fast. Hopefully I did well. Finally, it seems that the problem came from my cable ISP (routing issues ?) If this happens again, i'd like to know if it is possible to use gw1.ibllc.com instead of gw1.ibllc.ch ? So that, i could still use my cable connection (with wich i can ping the .com server). I tried to change it in the jts.ini file but it automatically comes back to .ch Did anybody try to do that before ? Is this possible ? Thanks. P.S : Thanks to the chat help IB guy. We lost contact when I switched ISP.