My Network Security Journal

Sharing my learning and personal experience in IT Network Security.

Sunday, October 16, 2016

Cisco ASA FirePower Network Discovery

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You need to perform network discovery in order for FireSight to know which hosts or networks to protect. The Default network discovery acti...
Sunday, October 2, 2016

Configuring Site-to-Site IPsec VPN Using CCP and ASDM

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I was troubleshooting a site-to-site IPsec VPN connection with a client who's using a Palo Alto (PA) firewall on their network. There...
Saturday, September 3, 2016

Retrieving the Serial Number on a Standby ASA Fireawall (via failover exec)

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I was trying to get the serial number of a standby ASA firewall and instead of asking a remote tech to get the chassis serial number, I iss...
Saturday, August 27, 2016

Factory Reset a Juniper SSG5 Firewall

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I was restoring a Juniper SSG5 firewall to its default settings. There are two ways in doing this: a quick way is using the reset pinhole ...
Saturday, August 13, 2016

Creating ASA Security Context Backup in Solarwinds NCM (and Pokemon Go)

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Pokemon Go was just recently released in Southeast Asia (it almost got banned in some countries) and the game craze is phenomenal. Kids an...
Saturday, July 9, 2016

Cisco ASA URL Filtering via DNS Inspection Policy Map

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One of our Ipoque DPI appliance suddenly failed but activated its fail-to-wire feature. I had to temporarily perform URL filtering on the...
Friday, July 1, 2016

FireSight GUI Menu Navigation

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Just some additional post setup features or settings that you might want to note in FireSight. NAT and VPN options under Devices tab are ...
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John Lloyd Lagura
I'm John Lloyd Lagura, a passionate Network Engineer, tech blogger and a lifelong learner. I specialize in routing, switching, security, wireless and cloud technologies. I currently hold CompTIA Network+, Security+, ITIL Foundation, Cisco CCNP Security, CCNP Enterprise, CCNA Cyber Ops, Juniper JNCIA-Junos, JNCIA-SEC, JNCIA-Design, Fortinet Network Security Professional (NSE4).
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