Cisco Simple GRE Tunnels (With IPSEC)
KB ID 0000951 Problem I’ve spent years setting up VPN tunnels between firewalls. The only time I’ve ever dealt with GRE is for letting VPN client software though firewalls. GRE’s job is to ‘encapsulate’ other protocols and transport those protocols inside a virtual point to point link. Below is the topology, I’m going to use. The tunnel will run form Router R1 to Router R3, once complete I should be...
Cisco PIX 500 – IPSEC Site to Site VPNs (v6)
KB ID 0000611 Problem Note: This is for firewalls running an operating system BEFORE version 7, if you have an PIX running version 7 or above go here instead. I’ll run though he commands first and then the configuration from PDM at the end. Solution PIX 500: Configure a site to site VPN from command line 1. Connect to the PIX, go to “enable mode”, then to “Configure terminal mode” User Access...
Securing Network Device Access With Cisco ACS (and Active Directory)
KB ID 0000942 Problem For network identification I have tended to use RADIUS (in a Windows NPS or IAS flavour), in the past. I turned my back on Cisco TACACS+ back in my ‘Studying for CCNA’ days, because back then it was clunky and awful. I have a client that will be installing ACS in the near future, so I thought I would take a look at it again, and was surprised at how much more polished it is. As Cisco plans to roll ACS...
Cisco ISE – Basic 802.1x With WindowsPart Three – Adding Network Devices (Authenticators)
KB ID 0001077 Problem Back in Part Two we configured the specific 802.1x policies in Cisco ISE. Remember with 802.1x it is a three tier system there is a supplicant, (a machine that wants to authenticate), the Authenticator, (the device the supplicant connect to, in our case a switch), and finally an Authentication server (Cisco ISE). Below I will add our switch into ISE, as a RADIUS device and create some groups, and locations for...
Site to Site IPSEC VPN from SonicWALL to Cisco ASA
KB ID 0000357 Problem You want to put in a secure IPSEC VPN tunnel from a Cisco ASA Device to a Sonicwall Firewall. Note in this example we will use 3DES for encryption, SHA1 for Hashing, Diffie Hellman Group 2, PFS enabled, and we will use a shared secret (Pre Shared Key). SonicWALL used in this example is a PRO 3060. Solution The main two gotcha’s Update 12/03/11 Feedback from Wajma Omari: I would like to add that this...