Wireshark with Windows 8

Today I wanted to sniff broadcast packets within a customer network, so I download and installed Wireshark (Wireshark-win64-1.8.2.exe) on my new Windows 8 x64 Installation. WinPcap couldn’t be installed. I only got the message “This version of Windows is not supported by WinPcap 4.1.2. The Installation will be aborted”. To resolve this, just download the … Read moreWireshark with Windows 8

Cisco ASA NAT examples with software version 8.4

I know that they take LSD (yes Lysergic acid diethylamide) at Cisco like Kevin Herbert but can they consume less? Every release of a new 8.x software version of the Cisco ASA has new NAT statements and logic. This week I replaced an old Cisco PIX 6.x with a new Cisco ASA 8.4(4)1 (asa844-1-k8.bin) and … Read moreCisco ASA NAT examples with software version 8.4

Cisco VPN Client not working at Windows 8 RTM

Last week I installed Windows 8 RTM x64 on my notebook. Everything worked fine except Cisco VPN Client. I always get the message “Reason 442: Failed to enable Virtual Adapter”: So i tried several things. Reinstall, Configuring fixed IP address, restart several times the service and then realized that the search of the adapter runs … Read moreCisco VPN Client not working at Windows 8 RTM

Set a Cisco WLC to factory-default and activate webinterface

To set a Cisco WLAN controller to factory default settings, you can connect via console or telnet/ssh to the WLC and type in the following: (Cisco Controller) > reset system (Cisco Controller) > recover-config or you can boot up the device and just press ESC several times to come to the boot menu. Type “5” to … Read moreSet a Cisco WLC to factory-default and activate webinterface

Broken connection status in network connection center with Sophos UTM

When you configure a Web Security Proxy Profile with Sophos UTM (Astaro ASG) for your network with authentication mode on, some applications just want to go directly outside without to authenticate themselves like the network connection center in Windows Vista/7/8. The system trys to open a default specified URL which can be found at the registry: … Read moreBroken connection status in network connection center with Sophos UTM

Updating HP ProCurve Switches

Finally back from USA I will deliver you a new tutorial to update your ProCurve switches. In most cases you will need to do an update on the software because your new installed GBIC modules are not recognized. Don’t ever install directly to the newest version because most updates need a new Boot ROM, so … Read moreUpdating HP ProCurve Switches

Quality of Service within a VPN tunnel over Dialer-Interface

Today I will show you how to configure QoS for outgoing SIP VoIP traffic who goes throw a VPN tunnel / crypto-map. To solve this we need to create class-maps for all IP traffic and for our SIP traffic and bind them to the crypto map and the outgoing interface because VPN traffic is encapsulated … Read moreQuality of Service within a VPN tunnel over Dialer-Interface

Router on a stick

Today I will show you how to build a so called “Router-on-a-stick” environment. In this example we have one Cisco router, one HP ProCurve switch and three subnets: First we configure inspection firewall profiles, so when someone requests packets from the internet, packets can come back through our inbound WAN interface access-list ip inspect name … Read moreRouter on a stick