Tag: Networking
All the articles with the tag "Networking".
Kali and OpenVAS
Updated:In house we use Nessus to scan for vulnerabilities, but that's a commercial subscription based product. It's not expensive, but it's not something I want t
OpenVPN Create User Keys
Updated:As I'd forgotten how to create a new OpenVPN user, it's not something I do every day, I thought I put here a reminder of the process used. To get a private
OpenVPN & DNS Lookup Failures
Updated:I've noticed that occasionally my OpenVPN connection fails to resolve host names for systems at the other end of the tunnel. If I check the DHCP settings I can see I am being pushed the DNS servers for the remote end, but nslookup fails to use them.
Mozilla Thunderbird Logging
I had the need to view the actual SMTP server conversation to confirm TLS and authentication were being used. I could have done this from server logs, but as we transmit thousands of SMTP messages a day it was easier to look to the client for logs, rather than for the needle in a stack of other needles.
Windows DKIM DNS Entry
Updated:Windows always gives me a bit of grief when trying anything a little out of the ordinary. I always find doing the same thing on Linux way simpler. This time it was relating to a DNS TXT entry for DKIM that is longer than 255 characters.
SPF Testing
http://vamsoft.com/support/tools/spf-policy-tester
Nginx, Not Just a Web Server
Updated:Nginx is capable of more than serving web pages. It can load balance, cache and act as a reverse proxy. We recently had need to access two web services on
OpenVPN & iptables
Updated:Some time ago I setup an OpenVPN server so we could securely logon to IT systems from outside the network. This worked really well until I rebooted it the
Using LDAP with Active Directory
Updated:Getting your Linux box to talk with Active Directory is pretty straight forward. But doing it securely will need you to have installed your CA certificate
Network Access Control
Updated:In order to satisfy a number of security requirements we implemented 802.1X authentication throughout our network - wired and wireless. Initially this was