Cisco VPN Error 27850 on Windows 10

Hello again! Today I wanted to install Cisco VPN Client on my Windows 10 machine but I got always error 27850. I found a knowledge base article that you need to install DNE Update. You can find it here: http://www.citrix.com/go/lp/dne.html If you have install problems. Follow the installation guide for the registry changes. Add a … Read more

Redundant Internet access with Cisco routers

You can configure redundant internet lines with Cisco routers. For this we will use route tracking. The configuration of this is also for backing up your VPN lines. In this example we have to internet lines: The main line is 105.1.2.x and the backup line 222.1.2.x (I also bound a crypto map to it): interface Vlan2 description … Read more

Cisco Site2Site VPN problem with “Fail to allocate ip address”

Today I configured a site2site VPN on a Cisco Router. The remote device was a Palo Alto. Phase 1 was working correctly but we got problems with Phase 2, the debug logs said: *Aug 15 09:13:06.899: ISAKMP:(6035):Total payload length: 12 *Aug 15 09:13:06.899: ISAKMP:(6035): sending packet to 80.70.60.50 my_port 500 peer_port 500 (R) MM_KEY_EXCH *Aug 15 … 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

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