Hello I am in this situation:
HQ: Cisco 2651XM fast0/0 LAN 192.168.1.0/24 fast0/1 remote link to the remote office via wireless link atm0.1 wan link
Remote office: ( Cisco 831: eth0: LAN 192.168.10.0/24 eth1: "WAN"
the eth1 of the C831 is connected via a transparent wireless bridge to the fast0/1 of the C2651xm in the HQ The C831 is not on all the day but only for a few hours a day. the remote lan just browses the internet via the wi-fi link and via the HQ's link. The wifi link is established at 11mbit (5mbit real throughput). The wireless link is encrypted via wep128 (UNSECURE) and cannot be upgraded.
After some days of planning I produced these ideas:
a) PPPoE Link (the C831,when switched on, calls the 2651XM and makes a PPP link to it) ms-chap-v2 + mppe 128 b) lan to lan ipsec link. I have the problem that I can route though ipsec the traffic destinated to the remote lans (192.168.1.x -> 192.168.10.x and vice-versa but I don't know how to tunnel the traffic to internet via the
2651xm). c) L2TP+IPSEC. A dialer interface on the C831 and a ip route 0.0.0.0 0.0.0.0 dial1 so everything goes through it.Problem: I never configured a l2tp "dial up" . Someone can help me ?