Author: René Jorissen

René Jorissen works as Solution Architect for QMonkeys in the Netherlands. Network Infrastructures are the primary focus. René works with equipment of multiple vendors, like HPE Networks, FortiNet, SentinelOne, Phished, Holm Security, Microsoft services and many more. René is Aruba Certified Edge Expert (ACEX #26), Aruba Certified Mobility Expert (ACMX #438), Aruba Certified ClearPass Expert (ACCX #725), Aruba Certified Design Expert (ACDX #760), CCNP R&S, FCNSP and Certified Ethical Hacker (CEF) certified. You can follow René on Twitter and LinkedIn.

Proxy

eSafe Proxy with NTLM v2.0

René Jorissen on March 8, 2010 • 1 Comment • Tags: #2008 #7 #authenticate #esafe #lan #manager #ntlm #ntlmv2 #proxy #r2

Today I am playing with eSafe 8 operating in eSafe Proxy with NTLM authentication mode. Configuring eSafe Proxy with NTLM authentication is very straightforward and not difficult. The authentication settings are configuring using the eSafe Appliance Manager web interface, like shown below. I did some testing with multiple browsers and single sign-on with NTLM authentication … Read More

Routing

Huh? Interface SSLVPN-VIF0?

René Jorissen on March 8, 2010 • 0 Comments • Tags: #interface #sslvpn #sslvpn-vif #vif

While checking interface statistics on a Cisco 3845, I noticed the following layer 3 interfaces. Interface                  IP-Address      OK? Method Status                Protocol GigabitEthernet0/0         74.124.155.67   YES NVRAM  up                    up GigabitEthernet0/1         10.10.10.1      YES NVRAM  up                    up GigabitEthernet0/0/0       unassigned      YES NVRAM  administratively down down SSLVPN-VIF0                unassigned      NO  unset  up                    up Tunnel0                    192.168.255.2   YES NVRAM  up                    up I can explain … Read More

Management

Playing with text files in Linux

René Jorissen on February 26, 2010 • 1 Comment • Tags: #cut #linux #sort #text #uniq

I had a big Microsoft Event Viewer log file and I wanted specific information from the log file. At first I was thinking about using Microsoft Excel to do some filtering, but that didn’t really help. At the end Linux did the trick. I used Cygwin under Windows to extract the specific information. The raw … Read More

Management

Cacti and HP Procurve

René Jorissen on February 24, 2010 • 3 Comments • Tags: #cacti #count #cpu #graph #mac #memory #procurve #template

Finding a template for HP Procurve switches wasn’t that hard. I needed to find a template for HP Procurve 2510G switches. The place to look for templates is forums.cacti.net. I searched the forums on the key word “procurve”, which resulted in many hits. I used the template from the article HP procurve 2600 series. After … Read More

Configuration Example, Security

Configure IOS SSL VPN on IOS router

René Jorissen on February 11, 2010 • 4 Comments • Tags: #anyconnect #client #context #forwarding #ios #port #ssl #thin #vpn #webvpn

Yesterday I blogged about configuring a VPN client on an IOS router and today I blogged about importing PKCS12 certificates for WebVPN purposes. This follow up blog is about configuring the WebVPN functionality together with the AnyConnect client and port forwarding on an IOS router. I use the same setup as with the VPN client … Read More

Configuration Example, Security

Import PKCS12 certificate on IOS router

René Jorissen on February 11, 2010 • 7 Comments • Tags: #ca #certificate #crypto #import #ios #passphrase #pkcs12 #pki #router #tftp #trustpoint

Nowadays IOS routers can be configured with WebVPN (Clientless SSL VPN) functionalities. WebVPN allows a user to securely access resources on the corporate LAN from anywhere with an SSL-enabled Web browser. To secure the connection you should use a SSL certificate to encrypt all transferred data. There are different ways of creating and importing SSL … Read More