I am currently running Fw-1 4.0 SR2 and Secure Remote 4005.  We are
using FWZ key management and I am trying to switch to ISAKMP.  I have
130 remote access users so dropping one and installing the other is not
a desireable option.  I have done the following:

1. Added ISAKMP encryption method.
2. Added a user and configured them to use ISAKMP (no NAT, worked OK)
3. User authentication is via a shared secret.
4. Added ":userc_NAT (true)"  and  ":userc_IKE_NAT (true)" as per
http://www.phoneboy.com/fw1/faq/0141.html
5. Followed all the associated instructions.
6. Nated user did not work.  Here is what I got:


16Jul2000 19:47:33  "daemon"  "FW-IP log authcrypt  PICX-NAT-IP  reason
Client Encryption: Authenticated by Pre-shared secret scheme: ISAKMP
methods: 3DES,ISAKMP,SHA1

16Jul2000 19:47:36  "daemon"  FW-IP  log  keyinst   Client-Private-IP 
Destination-Private-IP   "0x3c0c86b8"  "0xc51d69a0"   " scheme: ISAKMP
methods: Combined ESP: DES + SHA1 (phase 2 completion)"

16Jul2000  19:47:36  "daemon"  FW-IP  log  decrypt  http 
Client-Private-IP  Destination-Private-IP  tcp   "0x3c0c86b8" 
"0xc51d69a0"    " scheme: ISAKMP methods: Combined ESP: DES + SHA1"

16Jul2000 19:47:59  "daemon"  FW-IP  log  "decrypt"  http 
Client-Private-IP  Destination-Private-IP  tcp  "0x3c0c86b8" 
"0xc51d69a0"   " scheme: ISAKMP methods: Combined ESP: DES + SHA1"

For some reason FW-1 is ignoring the CISCO PIX generated source address
and using the actual source address provided by the remote client
(10.x.x.x), which is encrypted and sent to the firewall.  When the FW
unencrypts the packet it sees the encapsulated private source and uses
it for the reply.  Unfortunately the Private address of the client
(10.x.x.x)  will not return the packet.

I know I am close , any suggestions would be helpful. Please contact me
directly if you wish.

Phil Cummings


================================================================================
     To unsubscribe from this mailing list, please see the instructions at
               http://www.checkpoint.com/services/mailing.html
================================================================================

Reply via email to