Tag: Networking

All the articles with the tag "Networking".

• Mozilla Thunderbird Logging

  2 Mar, 2017

  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:24 Nov, 2016

  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

  17 Nov, 2016

  http://vamsoft.com/support/tools/spf-policy-tester

• Nginx, Not Just a Web Server

  Updated:28 Oct, 2016

  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:21 Oct, 2016

  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:26 Sep, 2016

  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:23 Sep, 2016

  In order to satisfy a number of security requirements we implemented 802.1X authentication throughout our network - wired and wireless. Initially this was

• Usenet

  Updated:22 Sep, 2016

  Usenet has been around since God was a lad. It's been part of the internet for so very long it predates all the graphical stuff we see today.

• Backing Up Juniper Configs

  Updated:19 Sep, 2016

  Spent ages looking at various options including rconfig and Laravel SSH, but had to surrender. Eventually figured out it couldn't be simpler! Setup an Open

• OpenVPN

  Updated:19 Sep, 2016

  Some months ago we bought a Barracuda firewall/VPN box to allow IT staff to connect and manage other IT devices securely. The idea was that the Barracuda would not only authenticate them against Active Directory and support two-factor authentication, but also carry out some Network Access Control and only allow devices that meets specific criteria connect to the network. Eg. Must be a domain member with a current Anti-virus and active firewall.