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Deploying Vyatta VPN server on dynamic IP.
Yes, I’m really fond of using Vyatta these days. Easy command line, not a resource-hungry system, runs in a VM,… Loving it. I do have to point out that my success with it is mostly from online...
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OpenBSD part I: basic Unix commands for routing.
Time for something slightly different: in the upcoming weeks, I’m going to post several articles about OpenBSD. OpenBSD is a command line Unix operating system, which by default comes with pf (short...
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OpenBSD part II: firewalling and NAT with pf.
In my previous post I described how to set up OpenBSD and enable simple routing between interfaces. This time an explanation about one of the core features: pf, or packet filter. The pf service allows...
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OpenBSD part III: static routing and OSPF.
In this third part of my series of OpenBSD posts, I’ll cover static routing and OSPF. Routing between connected interfaces is already covered in part I, but that doesn’t get you very far in a bigger...
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OpenBSD part IV: IPv6 tunnel and firewall.
I’ve already set up an IPv6 tunnel on three platforms: Vyatta, Cisco and Windows Server. This time, the same on OpenBSD. I’m not going to repeat myself, so for details about an IPv6 tunnel and how to...
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OpenBSD part V: bridging, VLANs and 802.1q tagging.
So far I’ve used OpenBSD as a layer 3 (routing) and layer 4 (firewalling) device, but it also has layer 2 functionality. For example, it’s possible to bridge between interfaces and use two, three, or...
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Knowledge gained this week.
The past weeks have been very informative for me and I learned a lot about many network-related things. As you may have noticed, I’ve been giving my attention to OpenBSD mostly, as I am determined to...
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OpenBSD part VI: CARP.
Let’s start with a note to self: when copying virtual machines, be sure to generate the MAC addresses again, otherwise you may end up with two virtual machines sharing the same MAC address. That...
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Site-to-site VPNs part IV: Vyatta
A free version of the new Vyatta 6.4 with a remarkable straight-forward configuration for VPN if you’re getting familiar with the concepts (which, if you’ve read the first three parts of this series,...
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Introduction to F5 network appliances.
I have to admit, this article will sound a bit like an advertisement. But given that Cisco has gotten enough attention on this blog already, it can only bring variation into the mix. A short...
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