gotchi » Cisco http://blog.gotchi.at is an acronym and stands for: Geniously Organized, Talented, Cool and sometimes Hysterical Idealist. Wed, 12 May 2010 08:53:38 +0000 http://wordpress.org/?v=2.9.2 en hourly 1 Using DomainKey and Sender ID as an end user http://blog.gotchi.at/2009/04/06/using-domainkey-and-sender-id-as-an-end-user/ http://blog.gotchi.at/2009/04/06/using-domainkey-and-sender-id-as-an-end-user/#comments Mon, 06 Apr 2009 14:49:00 +0000 Herbert http://blog.gotchi.at/2009/04/06/using-domainkey-and-sender-id-as-an-end-user/ Most implementations for using DomainKeys (or DKIM) and Sender ID are written and used on the level of the MTA to verify the authenticity of the message.

Now iconix has written a piece of software which allows the verification at end-user-level. That allows them to bring the whole process and system behind DomainKeys, DKIM, Sender IDs, SPF and so on from the MTA level to the end-user and in this case allows a broader mass to use the feature.

The tool has still some hick-hacks but its working quite well and the developers trying to fix problems as fast as possible. There are a lot of implementations available at the moment, for different mail programs as well as webmail systems.

If you wanna use one of the above features in your mail environment please don’t hesitate to ask the internet or drop me a message, especially if you are also one of these guys trying to give SPAM no chance. And most important,  if you are using one of the incredible Ironport C-Series machines, setting up DomainKeys or DKIM verification is only a few clicks away ;)

]]> http://blog.gotchi.at/2009/04/06/using-domainkey-and-sender-id-as-an-end-user/feed/ 0 AAA with TACACS+ on Cisco IOS http://blog.gotchi.at/2009/04/06/aaa-with-tacacs-on-cisco-ios/ http://blog.gotchi.at/2009/04/06/aaa-with-tacacs-on-cisco-ios/#comments Mon, 06 Apr 2009 08:54:00 +0000 Herbert http://blog.gotchi.at/2009/04/06/aaa-with-tacacs-on-cisco-ios/ Thanks to Karsten Iwen of Security-Planet.de who wrote a very good introduction about how to set up and configure AAA with the TACACS+ Service on Cisco IOS based devices.

The how-to is in German what is normally is really hard to find in the internet, English ones are really easy to get.

Have fun with the mentioned how-to AAA mit TACACS+ im Cisco IOS.

]]> http://blog.gotchi.at/2009/04/06/aaa-with-tacacs-on-cisco-ios/feed/ 0 Using Radius on Windows 2003 with Cisco VPN Concentrator or other Cisco Devices http://blog.gotchi.at/2009/04/05/using-radius-on-windows-2003-with-cisco-vpn-concentrator-or-other-cisco-devices/ http://blog.gotchi.at/2009/04/05/using-radius-on-windows-2003-with-cisco-vpn-concentrator-or-other-cisco-devices/#comments Sun, 05 Apr 2009 10:51:00 +0000 Herbert http://blog.gotchi.at/2009/04/05/using-radius-on-windows-2003-with-cisco-vpn-concentrator-or-other-cisco-devices/ The Cisco VPN Concentrator is one of my most beloved devices from Cisco :) I do not understand why Cisco stopped supporting and selling this device, perhaps because they integrated most of the feature into the IOS. Nevertheless it is a dedicated device which is optimized only for VPN Connections.

After the a few clicks experience the VPN Concentrator should allow the users of your network to access your internal network from anywhere using VPN Dial In. What most system administrators, like me, do not like is administer another user and password database besides their Active Directory database. For this reason I collected two important sites which address this topic:

Most important is to set the authentication profile right – like in the screenshot and don’t forget to tick “Unencrypted authentication”

The same procedure can be used for all other Cisco Devices, only difference is the configuration of the device itself.

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