Happy System Administrator Appreciation Day!

Today we celebrate the 14th annual of the System Administrator Appreciation Day!   Dear boss, can you bring me the following things for a happy SysAdmin Day?: Cake & Ice cream Pizza Cards Gifts Words of gratitude Custom t-shirts celebrating the epic greatness of your SysAdmin(s) Balloons Streamers Confetti Thanks in advance, your Administrator 🙂   … Read more

StackWise configuration with Cisco Catalyst 3750-X Series

Today I will open the box of pandora of switch virtualization 🙂 Switch virtualization is needed for configure etherchannels or LACP over two or more devices, configuration-redundancy, single-configuration and easy network expansion. In this example I will show you how to configure a stackwise cluster with Cisco Catalyst 3750-X switches:   with Cisco StackWise you can … Read more

Spanning Tree Protocol and PXE Boot

Most of us is using STP (Spanning Tree Protocol) within switched networks. In the last days I had problems on one location of a customer. We distribute new Cisco Catalyst 3750-X switches to the location and didn’t understand why desktop clients can’t boot via DHCP/PXE (Preboot Execution Environment). With globally activated STP/RTSP on the switches, every … Read more

Router on the edge

Good morning everyone! Today I want to explain a configuration for routing internal networks with a layer 3 routing switch and a router for accessing the internet. I call it “router on the edge”. The definition “edge router” is typically a router running EBGP (External Border Gateway Protocol) so I invent a new definition 🙂 … Read more

Sophos UTM 9.1 Final Release is here!

After the soft-release here comes the final release of Sophos UTM 9.1: ftp.astaro.de You can update from 9.006-05 to 9.100-16. People which installed the soft-release 9.100-8 will get an email some days ago like me to update from 9.100-8 to 9.100-16:   here are the official changelogs for 9.100-16: Official Up2Date Description: Remarks * System … Read more

Sophos UTM 9.1 available!

You can download the update from 9.006005 to 9.100008 here: ftp.astaro.de Up2Date-Informations News Major Features Endpoint: Web Protection for UTM Endpoint Network/RED/Wifi: Support for MAC Address Filtering RED: Offline Provisioning VPN: SSL VPN Support for iOS and Android Wifi: Wireless Repeating and Bridging for AP50   Other Features WebAdmin: Replace “Traffic Lights” with Toggle-Switch Design WebAdmin: … Read more

Site2Site VPN Tunnel with ClientVPN @ Cisco IOS

Good Morning everyone! I want to describe several VPN configurations on a Cisco router, ASA firewall and Sophos UTM. I will start with Cisco IOS on a Cisco router. In this example you will learn to configure a site2site VPN tunnel with a coincident client VPN access. First we will configure the basic IPsec VPN settings. … Read more