access-list v cisco asa firewall

[ohareka70]

Hi,

We have an external company who need access to our network through an ISDN line so they can get access to a few of our applications.  It is ok to patch their router into our Layer 3 switch which is on our OSPF network and then put an access-list on our L3 switch to only allow them access to the subnets where the servers are located.

Or is it better to do this with a Cisco 5520 ASA firewall between the two devices.  So really - is the access-list secure enough?

Kevin

[mahmoodmkl · Accepted solution]

Hi,

If implemented properly this can be done using ACL's.

Thanks

[ohareka70]

I have the access-list in place.  It can do a job for now until i get a chance to plug the isdn into the firewall.

thanks anyway,

Kevin

[Dinesh Kumar Mariappan]

Access list can do blocking and permitting.. Then what is necessary of firewall over Access list..? can briefly explain the bugs in access list which can overcome by firewall..

[Gajendra R']

hi Kevin,

to allow outside traffic Inside you will be require ACL to be configure. also i ll suggest you to configure ACL by permitting

that particular traffic to get the access of your servers.