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Stephen,

http://www.enteract.com/~lspitz/intrusion.html contains some information
about how to get FW-1 to raise alerts based on the entries in the log files.

This could be a possible approach with alert.sh modified to send a SNMP trap
? but it seems be based around calling a script from a FW rule.

Otherwise you could give them read-only access to the firewall GUI to
confirm the temp rules are in place ?

Stephen.





-----Original Message-----
From: Stephen Cooper [mailto:[EMAIL PROTECTED]]
Sent: 06 November 2000 09:39
To: [EMAIL PROTECTED]
Cc: [EMAIL PROTECTED]
Subject: ISS Realsecure Network Engine and CP Firewall-1


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Hello,

I have read with interest the recent thread on SNMP and Email, I have
nothing to add to this other than to say that the mechanism that Mark
suggests works well:

Engine -> Trap -> IT/O -> Escalation via Interface or Email.

Using an Email you can also feed the response into a Problem Tracking
database if you see fit.

============================================================================
=======

Now I have a question! Especially for those of you who integrate Firewall-1
and Realsecure from ISS.

If, in addition to other responses we request that the Engine performs an
OPSEC "FIREWALL" response to a Checkpoint Firewall and performs an "Inhibit
and Close" on the source IP address.

How can I be sure that the action is successful? 

Looking at the Realsecure data it is very easy to see that, yes, the IDS
sent a request to the firewall (response FIREWALL is sent in the trap)

On the other side how do we know that the firewall actually actioned the
request?

Looking at the Checkpoint log we find two entries

(In this case, fwm and fwd are co-located in the test environment)

Entry 1

3679;25Sep2000;19:35:36;ip_of_cpfwm;log;accept;;lan0;inbound;tcp;ip_of_rseng
ine;ip_of_cpfwm;FW1_sam;4364;44;9; ; ; ; ; ;

Entry 2

3680;25Sep2000;19:36:57;ip_of_cpfwm;control;ctl;;daemon;inbound;;;;;;;;;;;;;
SAM 'inhibit + close' (no connections closed)  src 202.157.130.32  expire
600  (sent from ip_of_rsengine to if_of_fwm on port 18183)

It can be seen that the second entry confirms that the Realsecure request is
successful. Also that the log entry is not created in response to a Firewall
rule condition and not directly able to assign an SNMP response on the
Checkpoint GUI.

How would I inform Openview via SNMP that the reconfiguration was successful
and reassure operations that the IDS actually worked?

Stephen








Stephen J. Cooper
Senior Systems Analyst
Bank for International Settlements
Phone: +41 61 2806792
Fax: +41 61 2809100

This user's PGP Public Keys can be
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