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IPSEC/L2TP, Windows client to PIX

paddyxdoyle
Level 11
Level 11

Hi,

I am testing IPSEC/L2TP from a windows client to a PIX 501.

The IPSEC portion is working fine on phase 1 and 2 and the PIX is seeing and decrypting IPSEC traffic.

However its not allowing the L2TP bit and hence user authentication to happen and i can see the following from the logs.

710005: UDP request discarded from *.*.*.*/1701 to outside:*.*.*.*/1

701

I've currently got an access-list on the outside interface to permit ip any any

From the cisco site, it indicates this message means that the PIX is not listening on UDP 1701 and hence not responding.

Does anyone know if i have to enable L2TP in some way, i though this had allready been covered in my config:

sysopt connection permit-l2tp

sysopt connection permit-ipsec

!

access-list l2tp_acl line 1 permit ip any any

!

crypto ipsec transform-set l2tp_tran esp-des esp-md5-hmac

crypto ipsec transform-set l2tp_tran mode transport

!

crypto ipsec security-association lifetime seconds 3600

crypto dynamic-map dyna 20 match address l2tp_acl

crypto dynamic-map dyna 20 set transform-set l2tp_tran

crypto map mymap 10 ipsec-isakmp dynamic dyna

crypto map mymap client authentication LOCAL

crypto map mymap interface outside

!

isakmp enable outside

!

isakmp key ******** address 0.0.0.0 netmask 0.0.0.0

isakmp policy 20 authentication pre-share

isakmp policy 20 encryption des

isakmp policy 20 hash md5

isakmp policy 20 group 1

isakmp policy 20 lifetime 3600

!

ip local pool l2tp_pool 10.1.1.1-10.1.1.5

!

vpdn group l2tpipsec accept dialin l2tp

vpdn group l2tpipsec ppp authentication chap

vpdn group l2tpipsec ppp authentication mschap

vpdn group l2tpipsec client configuration address local l2tp_pool

vpdn group l2tpipsec client configuration dns *.*.*.*

vpdn group l2tpipsec client authentication local

vpdn group l2tpipsec client accounting RADIUS

vpdn group l2tpipsec l2tp tunnel hello 60

vpdn enable outside

!

Any help would be appreciated.

ta

Paddy

1 Reply 1

paddyxdoyle
Level 11
Level 11

Managed to get it working with XP SP2 using this config, but not Windows2000 server SP4!!

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