My Network Security Journal
Sharing my learning and personal experience in IT Network Security.
Saturday, April 17, 2021
Cisco ASA Firewall 'shun' Command
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There's a quick and easy way to block an external (public) IP address without creating an ACL is to use the Cisco ASA Firewall shun fea...
Saturday, March 13, 2021
Configuring NetFlow (NSEL) in a Cisco ASA Firewall
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Here's a nice Cisco link for configuring NetFlow Secure Event Logging (NSEL) in a Cisco ASA Firewall. The Cisco ASA supports NetFlow ver...
Sunday, February 7, 2021
Cisco ASA 5506-X ROMMON Upgrade
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I needed to upgrade the ROMMON firmware on a Cisco ASA 5506-X firewall (with SSD or Firepower module). This is a required step before conve...
Saturday, January 2, 2021
Cisco ASA 5506-X Security Plus License
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I had to configure a pair of Cisco ASA 5506-X firewalls and apply a Security Plus license in order to support the Active/Standby Failover (H...
Sunday, December 6, 2020
Configure Cisco AnyConnect in ASA Multiple Context Mode
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I tried the popular Beef Wellington (English meat pie) at Bread Street Kitchen Marina Bay Sands , which is owned by celebrity chef Gordon ...
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