Access Control list to setup firewall internal to our network

Posted on 2006-10-19
Last Modified: 2013-11-16
We have a Police Department network which accesses services such as email, internet, file sharing/printing from the City Hall network.  I want to setup a firewall in such a way that the Police Department can access everything on the City Hall network.  I want nobody except the servers at City Hall be able to talk to servers at Police Department.

The Police Department is connected to City Hall using a fiber trunk.

The Police Department network is and there gateway interface to City hall is

The City Hall network is network.

Any help with a sample access list will greatly help.
Question by:rwcstaff

Accepted Solution

Sean64 earned 125 total points
ID: 17770601
Here's a simple ACL (assuming all servers reside on 10.255.x.x subnetwork.
It would be helpfull to know what the subnet masks are at each site, as well as what type of firewall you're using to provide a better answer.



Assisted Solution

tang_tzuchi earned 125 total points
ID: 17771138

Beside the ACL provided by Sean64, you can add another statement for all traffic Police Department to City Hall network:


Author Comment

ID: 17775025
Thanks Sean64 and Tang tzuchi.  Sean64, you had a question about the subnet mask on both sides.  It is  Having said that will the ACL you are suggesting still valid.  Thanks.

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