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troubleshooting Question

Cisco Firewall - Proper way to open ports into inside interface

Avatar of ddrmis
ddrmis asked on
Software Firewalls
7 Comments1 Solution465 ViewsLast Modified:
The sad reality of security I guess. I need to open up bi-directional communication ports on our firewall quite frequently to allow our workstations to communicate with remote applications. We are running ver 6.X of PIX. I was wondering what the proper / best practice method is for this. I want to only allow access to these clients machines to mitigate my risks. I've not seen a good example in my limited research, but following is what i have done:

server we need to communicate with (outside our network):
port: 5555
outside interface: (our public IP for network/Internet traffic)
internal computer / workstation that needs access to server / gateway outside our secured network: on a 10.10.X.X network

access-list outside_in permit tcp host interface outside 5555

access-list outside_in permit tcp interface outside host eq 5555

access-list outside_in deny tcp interface outside any eq 5555

access-list inside_in permit tcp host host eq 5555

I'm not sure if the host keyword is used correctly here. I'm setting up my stuff with object-groups, so please forgive the syntax and feel free to correct me here ;)

Security... what security?
Avatar of Les Moore
Les MooreFlag of United States of America imageSystems Architect
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