i have successfully installed a dial-in server in SME 5.5 (installed as server only behind our gateway)
SME IP = 192.168.1.254
Gateway = 192.168.1.100
ppp0 = 192.168.1.200
/proc/sys/net/ipv4/ip_forward = 1
However when the client dials in the gateway address that they get is the PPP0 address itself. They can browse webpages of SME but localnets and external nets can't be reached.
TIA