Sean
Rules are proccessed top-down and exit-on-match.
The wrong way:
rule x: permit TCP/UDP source any port any to destination port 80
rule x+1: deny TCP source x.x.x.x port any to destination port 80
The first rule allows anyone to access whatever webserver, the IP you want to
deny will also match the first rule and exit. Therefore your second rule will
never match.
The right way:
rule x: deny TCP source x.x.x.x port any to destination port 80
rule x+1: permit TCP/UDP source any port any to destination port 80
In this case the IP to deny will match and exit on the first rule and be denied.
All other will not match the first rule but the second and will be allowed.
Keep this in mind and you will have clean rules !
Daniele
Sean Logan wrote:
> I'm having problems trying to prevent an internal PC from using the internet
> via port 80. I've tried
>
> creating a rule but nothing has worked so far. Is there a specific order or
> way I should create this rule?
>
>
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best regards
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Daniele Guazzoni
Senior Network Engineer, CCNA, CCNP
Ackersteinstrasse 203
CH-8049 Zurich
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