Re: [FW-1] SecuRemote and Cisco Pix

["Alan Baker ( ISC Networks )" <Alan.Baker@FW1-NOSPAMEUROPE.SIMOCO.COM>]

Thanks Don.

As far as I can see I have now done what the FAQ suggests, and am one step
nearer.

The service I try, be it Telnet or Net Support (port 5405) is now decrypted
fine, with a source address shown as the remote Pc's real address in the
log:

10:06:28 authcrypt firewall   >daemon src 62.254.201.181 user smith rule 0
reason Client Encryption: Authenticated by Pre-shared secret scheme: IKE
methods: DES,IKE,SHA1
10:06:28 keyinst firewall   >daemon src 62.254.201.181 dst firewall IKE Log:
Phase 1 (aggressive) completion. DES/SHA1/Pre shared secrets Negotiation Id:
fb6d7c-27afba3762f3d502
10:06:28 keyinst firewall   >daemon proto ip src 62.254.201.181 dst firewall
srckeyid 0xf9be5dfa dstkeyid 0x30cdfb47 rule 0 scheme: IKE methods: Combined
ESP: DES + SHA1 (phase 2 completion) for host: 192.168.24.30 and for subnet:
0.0.0.0 (mask= 0.0.0.0)
10:06:29 decrypt firewall   >daemon proto tcp src 192.168.24.30 dst serv16
service telnet s_port 1038 srckeyid 0xf9bd5dfa rule 5 user smith scheme: IKE
methods: Combined ESP: DES + SHA1

ie 62.254.201.181 is the NAT pool address assigned, and 192.168.24.30 the
Pcs real address.

But there is no sign of real conenction between the remote site and the
target eg no response to the telnet request.

Am I missing something?

Alan


-----Original Message-----
From: Don [mailto:don@BLACKSUN.ORG]
Sent: 10 January 2002 00:01
To: FW-1-MAILINGLIST@beethoven.us.checkpoint.com
Subject: Re: [FW-1] SecuRemote and Cisco Pix


> We use SecuRemote here successfully for normally dial-up users via a
variety
> of ISPs.  But I now need to configure a PC inside a customers site, behind
a
> Cisco Pix using dynamic pool NAT.
Dynamic pool, static, and hide mode NAT should all work.

> The SecuRemote clients use IKE.
Have you enabled UDP encapsulation as per the instruction on
www.phoneboy.com? (Search for "Secure Client and NAT") From the looks of
your log output it seems like this is not enabled. This would also explain
why the topology download and authentication work but not communications.

Versions of 4.1 prior to SP2 (even those that were later upgraded) may not
have UDP encapsulation defined, nor the UDP Encapsulation Service defined.

You need to make sure that you firewall object has :userc_IKE_NAT (true)
and that the VPN UDP Encapsulation service is defined in your services
list.

You may also wish to force UDP encapsulation on the client side.

The FAQ should answer all of your questions.

Don


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