Archived from groups: comp.security.firewalls (More info?)
Hi,
i am running a netscreen 100 with 4.03 OS and i am seeing very wierd
stuff.
I created a bunch of trusted and untrusted hosts and then policys.
Some policys work and some dont. Also to mention i have setup some
group's where i have bound all smtp server as one group. For some
reason not all policy's work and it seems to matter in some cases
where the policy is located as far as order goes which i dont
understand why. If by default everything is blocked and i
have a policy that allos smtp for example and then 5 other policys
unrelated why can this effect another policy which allows anothe host
to use smtp..
Archived from groups: comp.security.firewalls (More info?)
Hi,
NOC Guy <alexp@iccinternet.com> wrote:
> group's where i have bound all smtp server as one group. For some
> reason not all policy's work and it seems to matter in some cases
> where the policy is located as far as order goes which i dont
> understand why.
Because netscreens (as a lot of other filters too) work this way.
All rules are applied from top to bottom. If a rules matches for a given paket,
processing stops.
Archived from groups: comp.security.firewalls (More info?)
Hi,
NOC Guy <alexp@iccinternet.com> wrote:
> in this case c to z wont work until i move it up into the xx to z
> group.
> this does not make sence to me...
Yes. That does not make any sense.
I could understand that netscreen is able to do better optimisation
when the "similar" rules are grouped.
Have you checked the knowledgebase for such problems?
> i asume it would be a deny any any as the last policy
And enable logging. And don't forget to tell the netscreen to
log traffic to herself.
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