We have an 837 at the remote site and a PIX 515R at the main site. We are trying to configure a site-site VPN. Do you know of any sample configuration that could help us? We have used the SDM manager to cofigure a site-site connection but this is not working so far. We appear tp be passing traffic as we can ping the PIX from the 837 but there seesm to be an authentication problem.