American Registry for Internet Numbers:

BGP Stream- free resource for receiving alerts about hijacks, leaks, and outages in the Border Gateway Protocol:

Cisco Config Guides:

Cisco Command References:

Cisco Feature Navigation (IOS):

Cisco Tools & Resources:

Cisco Voice Codec Bandwidth Calculator (You need a CCO Login):

comScore Rankings:

Google Tools:

Looking Glass Threat Map:

Microsoft Message Header Analyzer Tool:

NANOG Tutorials:

Norse Cyber Attack Map:

Palo Alto Live Community:

Palo Alto Product Specs:

Service Name and Port Number Registry:

Submarine Cable Map:

UCSM CLI Navigator:


Wireshark’s OUI Lookup Tool: