21. Oct, 2009
Herbert
It’s open!
My new site has opened its doors and it looks little bit different to the old one! I mean – to be honest – it’s not finished yet but thats how the web works, it never gets finished. Most important is that I didn’t delete the old posts but I refocused which content should be favourized.
Based on the fact how life changes I also realized that this homepage is my private work – not my business work. Therefore I am going focuse more and more on photography and my hobbies I really like – based on photos 
But still, I will create some technical posts but at the moment I do enough technical stuff in my business time as Cisco/Ironport Instructor and internal IT staff in my company.
I hope the new site gets at least as good as the last one!
Cheers Herbert
6. Apr, 2009
Herbert
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 
6. Apr, 2009
Herbert
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”.
5. Apr, 2009
Herbert
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 “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.
31. Mar, 2009
Herbert
Ich hab nun mehr als genug Zeit das ein oder ander aufzuarbeiten – so auch meine “Starred Items” aus Google Reader:
31. Mar, 2009
Herbert
Irgendwie komm ich gar nicht dazu mir all das anzusehen, trotzdem hab ich zu gewissen Themen schon einiges an Informationen gesammelt – welche auch für jemand anderen interessant sein könnte.
So auch zum Thema TCL – angefangen von Einsteigerinformationen bis hin zu Tutorials wie man einen Cisco Router damit besser administrieren kann.
Update
30. Mar, 2009
Herbert
Ich sammle ja immer wieder interessante Cisco Links – komme jedoch nur selten bis gar nie dazu sie zu posten, aus diesem Grund mach ich hier ne Zusammenfassung:
