Re: PIX Books

[greg padden <paddeng () biostat wisc edu>]

I own 4 FWSM blades and cannot find any books on them.

BTW, last night Cisco and I discovered a sev 1 bug on the FWSM running 
trasparent mode.  Seems that there is a timing issue that causes two of 
the four etherchannel trunks to fail.  This causes very strange problems 
with some pc's behind the fwsm not being able to connect to some (that 
right, some) external sites.

The two etherchannel trunks being down is what causes the strange 
behavior that some pc's on the lan behind the transparent virtual 
firewall could not get to some external and Internet sites, but could 
reach others.  This is due to how the catalyst switch assigns traffic to 
each etherchannel trunk.  The algorithm for assigning which etherchannel 
trunk to use is based on source ip, dest ip, and source mac address.  
That is why particular ip's had no problem and some had strange problems.

Shimon Silberschlag wrote:

> Can anyone recommend a good book on PIX firewalls? Even better if the 
> book covers FWSM (PIX blade). Our group is familiar with firewalls, 
> just not the PIX, so it doesn't have to be a beginner's guide.
>
> TIA,
>
> Shimon Silberschlag
>
> +972-3-9351572
> +972-50-7207130
>
> _______________________________________________
> firewall-wizards mailing list
> firewall-wizards () honor icsalabs com
> http://honor.icsalabs.com/mailman/listinfo/firewall-wizards


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