Simple question about access lists

Hi,

I'm having a devil of a time trying to set up what ought to be an extremely simple inbound access list. All I want to do is allow inbound connections to a few web servers, while not having any kind of restrictions on outbound traffic.

My understanding is that I need to permit established traffic at the top of my list in order for client programs to get responses from outside servers. I put:

access-list 101 permit tcp any any established

But this doesn't work. With this control in place, I can't even browse an external web site. The only way I've been able to fix it is to allow everything:

access-list 101 permit ip any any

Of course this is not what I want, because it opens my whole network up to the internet.

Is there some special trick to this that I'm missing?

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Posted 5 years ago by flarosa in Cisco Systems

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