In one branch office, We have 1841 that has ADSL modem connected to FA port. Behind the 1841 is the private LAN. The ADSL line (dynamic IP) is used for L2L VPN to connect to two sites and also to connect to Internet - browsing, downloading, etc.
WIC-1T card is also installed on the same router but it is still not used.
If we put ASA5505 behind the 1841, can the LAN users continue to use the VPN on the ADSL?
Given the new setup, my concern is that we might not be able to continue using the ADSL for VPN now that there will be two devices between the LAN and the Internet.
Our ADSL is faster than the serial so we wanted to keep the VPN and browsing connected that way and also start using the serial.
What combination statements do I have to enter in the ASA and 1841 for this particular requirement to work?
If buying and ADSL card will help or reduce the number of hops, I'm willing to do it.
ip address x.x.124.73 255.255.255.248
ip policy route-map ADSL
description Outside-Connected to ADSL modem
ip address 220.127.116.11 255.255.255.0
ip route 0.0.0.0 0.0.0.0 18.104.22.168
access-list 110 permit ip host x.x.124.75 any
route-map ADSL permit 10
match ip address 110
set ip next-hop 22.214.171.124
global (outside) 2 x.x.124.75
nat (inside) 2 10.10.10.0 255.255.255.0
static (inside,outside) x.x.124.78 dominoserver netmask 255.255.255.255
route outside 0.0.0.0 0.0.0.0 x.x.124.73 1