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Remote VPN problem

I'm setting up a PIX515e with v4.0.1 remote clients. The connection establishes, but apparently the PIX is not properly using the tunnel. The result is the client cannot access resources on the trusted LAN.

Results of sh crypto sa:

#pkts encaps: 0, #pkts encrypt: 0, #pkts digest 0

#pkts decaps: 2084, #pkts decrypt: 2084, #pkts verify 2084

#pkts compressed: 0, #pkts decompressed: 0

#pkts not compressed: 0, #pkts compr. failed: 0, #pkts decompress failed: 0

#send errors 0, #recv errors 0

Traffic is not being properly routed through the tunnel. If I ping the remote client from a host on the trusted LAN, I see the ICMP packets on the wire on my WAN interface.

11 packets captured

13:43:46.663539 x.x.55.37 > x.x.193.235: icmp: echo request

13:43:51.454703 x.x.193.235 > x.x.193.226: ip-proto-50, length 132

13:43:51.864594 x.x.55.37 > x.x.193.235: icmp: echo request

13:43:52.790608 x.x.193.235.500 > x.x.193.226.500: udp 84

13:43:52.790928 x.x.193.226.500 > x.x.193.235.500: udp 84

13:43:52.956829 x.x.193.235 > x.x.193.226: ip-proto-50, length 132

13:43:54.459158 x.x.193.235 > x.x.193.226: ip-proto-50, length 132

13:43:56.870575 x.x.55.37 > x.x.193.235: icmp: echo request

13:44:01.876556 x.x.55.37 > x.x.193.235: icmp: echo request

13:44:02.805546 x.x.193.235.500 > x.x.193.226.500: udp 84

13:44:02.805897 x.x.193.226.500 > x.x.193.235.500: udp 84

11 packets shown

FYI...x.x.193.226 is the PIX WAN port.

Several interesting things here.

1) PIX is placing the ping echo request on the wire unexcrypted. Why isn't the traffic using the established tunnel?

2) The client is setup for UDP transparent tunneling. So why the protocol 50 traffic? I thought that was the point of transparent tunneling, to get past the ISPs like earthlink who block protocol 50 traffic.

I'm using a dynamic crypto map, but I don't see how the dynamic ACL that is created with the SA is applied to the traffic. If I sh access-lists, I see the dynamic ACL:

access-list dynacl9 line 1 permit ip any host (hitcnt=0) is the virtual address assigned to the client.

If I sh crypto dynamic-map, I see:

Crypto Map: "WANMAP" interfaces: { WAN }

client authentication RADIUS

Crypto Map "WANMAP" 65535 ipsec-isakmp

Dynamic map template tag: DYNMAP

Crypto Map "WANMAP" 65540 ipsec-isakmp

Peer = x.x.193.235

access-list dynacl9; 1 elements

access-list dynacl9 line 1 permit ip any host (hitcnt=0)

dynamic (created from dynamic map DYNMAP/20)

Current peer: x.x.193.235

Security association lifetime: 4608000 kilobytes/28800 seconds

PFS (Y/N): N

Transform sets={ ENCRYPT, }

Here's my config:

ip local pool vpnclients x.x.17.1-x.x.17.254

access-list INSIDE permit ip x.x.55.0 any

access-list INSIDE permit icmp x.x.55.0 any

access-list OUTSIDE permit ip any x.x.55.0

access-list OUTSIDE permit ip any host x.x.193.226

access-list OUTSIDE permit icmp any x.x.55.0

access-list OUTSIDE permit icmp any host x.x.193.226

access-list VPN-NAT permit ip any x.x.17.0

ip address WAN x.x.193.226

ip address WIN-LAN x.x.55.1

nat (inside) 0 access-list VPN-NAT

nat (inside) 0 x.x.55.0 0 0

access-group OUTSIDE in interface outside

access-group INSIDE in interface inside

sysopt connection permit-ipsec

crypto ipsec transform-set ENCRYPT esp-des esp-md5-hmac

crypto dynamic-map DYNMAP 20 set transform-set ENCRYPT

crypto map WANMAP 65535 ipsec-isakmp dynamic DYNMAP

crypto map WANMAP client authentication RADIUS

crypto map WANMAP interface outside

isakmp enable outside

isakmp policy 20 authentication pre-share

isakmp policy 20 encryption des

isakmp policy 20 hash md5

isakmp policy 20 group 2

isakmp policy 20 lifetime 86400

vpngroup vpngroup address-pool vpnclients

vpngroup vpngroup dns-server [ip of nameserver]

vpngroup vpngroup wins-server [ip of wins server]

vpngroup vpngroup default-domain

vpngroup vpngroup idle-time 1800

vpngroup vpngroup password ********

Can anyone shed any light onthis?



Re: Remote VPN problem

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