One of the really cool features included in IPv6 is the ability for host machines to auto configure their IP address and gateway. Although this was present in IPv4, it was limited to link-local, non-routable addressing (169.254.x.x). IPv6 provides the equivalent of DHCP within it’s design, but with a few twists. Let’s look at how …
August 2012 archive
Aug 23
Mikrotik Dual WAN Routing – Packet Flow
If we add a second ISP line to our network, we need a couple of mangle entries to keep the traffic flowing in and out the correct interfaces. If we simply add a second WAN connection to the router (in this example we will use eth4), the router may not respond to pings or allow …
Aug 23
Mikrotik 6to4 IPv6 Setup
Today we are looking at how to set up a 6to4 IPv6 tunnel. I will be using a free service at http://www.tunnelbroker.net as the tunnel broker. Hurricane Electric provides this service along with some other very cool IPv6 tools. They also provide a mini IPv6 certification program to help get people started. There are a few things …
Aug 16
Mikrotik Proxy: Limiting Internet Access
In library environments, we often have a need to limit Internet access on certain computers. One example would be for a dedicated card catalog computer where we do not want patrons using the machine for anything else. In this example, we have a certain computer that will only be allowed to access a card catalog …
Aug 01
Mikrotik VLAN Trunk and Unifi AP
Suppose we have an access point capable of multiple SSID and VLAN. We want to set up an open hotspot for public access on one channel, and a secured channel for staff. For this exercise, we will use a Ubiquiti Unifi AP and set up two WLANs. The first WLAN will be called “Public” and …