Hi, this is my problem... I have two sites with ADSL connection and public IP assigned... I have RB1000 router on site 1 and RB450 router on site 2. I've done a tunnel both two sites using EoIP. In site 1 I have a AS400 server adn in site 2 I have a AS400 Client and some PC connected with AS400 server... the PC's haven't problem, work's fine but sometime AS400 client disconnect itself from server... I've tried with PPTP tunnel also with same results.... suggestions?