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I am trying to set up a VPN tunnel between two sites using a Linksys
RV042 at each site. Site A has the RV042 connected to a DSL modem
while Site B has a Cisco 1720 connected to a T1 line. The Cisco has 3
interfaces, the serial interface, ethernet interface, and a fast
ethernet interface. The serial interface is connected to the T1 line,
the ethernet interface is connected to a DMZ, and the fast ethernet is
connected to the internal LAN. The Cisco also has the IP Firewall
feature set. On the DMZ, I have a Linksys RV042 that I am trying to
connect to the RV042 at Site A. I set up the access list with the
following entries to allow ipsec connectivity between both RV042's:

access-list 102 permit udp host aa.AA.aa.AA host bb.BB.bb.BB eq 500
access-list 102 permit esp host aa.AA.aa.AA host bb.BB.bb.BB
access-list 102 permit ahp host aa.AA.aa.AA host bb.BB.bb.BB

aa.AA.aa.AA = IP Address of Site A's RV042
bb.BB.bb.BB = IP Address of Site B's RV042

The VPN does make a connection and I am able to ping computers on each
side of the VPN. The problem is that I cannot run a program like
Microsoft's terminal services on either end. Are the above access
lists entries all that I will need for the VPN connection?

Thanks