IOS SSL VPN – tunnel mode

This configuration details how to setup an SSL VPN in 'tunnel mode' on a router running v15 IOS. Such a configuration could be run implemented on a small to mid-size remote site utilising an ISR router. Firstly install the AnyConnect package onto the router: ! webvpn install svc flash:/anyconnect-linux-64-4.2.01035-k9.pkg sequence 1 ! Confirm the package... Continue Reading →

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Cisco ASA 5505 RAM – compatible modules

I'm a big fan of the ASA 5505 and deploy them in various scenarios, so I am regularly sourcing them off ebay and upgrading them. They supposedly take 148pin DDR 400MHz modules, but not all are alike. Below is a table showing the compatibles that I have found: ConfirmedCisco partManf.P/NdetailvoltageCAS latencymemory timingASA v02ASA v03ASA v04ASA... Continue Reading →

Cisco ASA AnyConnect configuration

The first step is to configure the ASA to Web-deploy the AnyConnect Client. Prior to version 8.0(2) it was necessary to configure WebVPN to listen on a different port to the ASDM client. This is no longer the case. ciscoasa(config)# webvpn ciscoasa(config-webvpn)# port 443 ciscoasa(config-webvpn)# enable outside ciscoasa(config-webvpn)# anyconnect image disk0:/anyconnect-win-3.1.04066-k9.pkg ciscoasa(config-webvpn)# anyconnect enable ciscoasa(config-webvpn)#... Continue Reading →

Cisco ASA – configuring PPTP VPN

The Point-to-Point Tunnelling Protocol is a VPN implementation created by Microsoft to allow remote users access to secured networks via a PPTP server. Two protocols are used; a TCP control channel on port 1723 and a GRE tunnel to encapsulate the PPP packets. The ASA uses packet inspection to detect the control packets and allow... Continue Reading →

This is a real world scenario where I needed to route traffic from a private subnet via secondary router when a particular set of servers on a secure external network needed to be accessed.All three VLANs on the ASA were private subnets so NAT had been configured to allow traffic to be routed correctly. !... Continue Reading →

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