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Security

Name Type
ASA - Security Levels
An ASA has a level of security out of the box, even before ACLs are applied. See how they work, when to use them, and the curious case of 'Same Security Level' interfaces
wiki
ASA 5500-X Series and Firepower Threat Defence blog post
ASA Policy Based VPN
The Cisco ASA can be used as a site-to-site VPN, and secured with IPSec. See how this is done using policies
wiki
ASA Route Based VPN
This article discusses how to make the ASA behave like it has a route-based VPN, in order to get OSPF running across the tunnel
wiki
BGP - Bogons and Martians
Can packets come from Mars? Or is it all a conspiracy? If think you may need to filter Bogons and Martians, this is for you...
wiki
BGP Prevent Transit AS
If you're not a provider, you probably don't want to be forwarding other people's traffic through your Autonomous System. Here are a few ways to prevent becoming a transit area
wiki
Cisco Live Melbourne 2017 - Day 1 blog post
Firepower Threat Defence 6.2 blog post
Internet Registry ROA and RPKI
It's not hard to advertise a block of IP's to the internet, but what's stopping someone else from hijacking your IP's and advertising them elsewhere?
wiki
IPSec Basics
An introduction to the IPSec, and how it is used to secure communications
wiki
vPC Plus
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