I configured a PIX 506E w/ v6.3 PixOS. I can connect just fine however, I cannot see anything at all on the inside network. Here's my relavant config:
access-list nonatinside permit ip 192.168.20.0 255.255.255.0
192.168.21.0 255.255.255.0 ! ip local pool clientpool 192.168.21.10-192.168.21.25 ! sysopt connection permit-ipsec crypto ipsec transform-set a-transform esp-3des esp-md5-hmac crypto dynamic-map mydynmap 10 set transform-set a-transform crypto map mymap 10 ipsec-isakmp dynamic mydynmap ! isakmp policy 10 lifetime 86400 vpngroup testlogin address-pool clientpool vpngroup testlogin dns-server 192.168.20.3 192.168.20.4 vpngroup testlogin default-domain mydomain.com vpngroup testlogin split-tunnel nonatinside vpngroup testlogin idle-time 32400 vpngroup testlogin password ******** !