I was wondering if someone would let me know what is currently considered best practice for ACL's on the ASA-5510? We want to add more rules to restrict access to the ASA and the LAN behind it. Would blacklisting or whitelisting be better?
The ASA-5510 has 256 MB of main memory and 1 GB of CF drive on it. It's running ASA825-59-K8 for software and couldn't be upgraded any further under current conditions. Since it is scheduled for replacement, we are reluctant to put more RAM in it.
Thanks in advance for any assistance you can give.
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