A collection of 43 posts


[toc]Group Encrypted Transport (GET) VPN is slightly different and has quite different use cases from more traditional point to point IPSEC VPN where each point to point VPN is quite distinct in

DMVPN setup with PSK (GNS3 Lab)

[toc] Dynamic Multipoint VPNs (DMVPN) offer a low admin overhead and scalable VPN solution. It is also efficient at routing traffic as it can dynamically reconfigure itself from a hub and spoke to

jun2acl (Juniper to Cisco ACL Script)

Recently we've needed to migrate an inherited environment  away from Juniper Junos and onto Cisco IOS. As part of this a lot (!) of old an quite nasty firewall filter config needed to be

EIGRP (Named vs Legacy)

Just a quick look over the basic differences with the newer style of EIGRP config. It really is quite a bit nicer (more logcal?) layout in the config with things like authentication moving

BGP RTBH setup using exaBGP

[toc]In this post I'll describe a basic setup using Cisco IOS, IOS XR and exaBGP that will function as a BGP remotely triggered blackhole (RTBH) allowing you to null route any source/