Latest posts
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Callmanager 4.1.3 Calling Search Space Caviot
In CM4.1.3 you have the option to add multiple partitions to your calling search space. Beyond this, you can order them based on priority. Within these partitions that are ordered you can add router patterns. Route patterns are matching strings for numbers dialed…as in 9.123XXXX. The idea of putting these route patterns in partitions is…
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Is ARP Considered Layer2 Or Layer3
I was discussing an issue with a customer the other day when he told me that layer3 was working because ARP was functioning. I told him that ARP is a layer 2 service that assists layer 3. He told me “you are wrong, but whatever.” 🙂 I didn’t argue. This customer is always abrupt and…
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Just A Little Lock Picking
I’ve always wanted a set of lock picks and I finally picked up a set for Christmas. I got the Southord MPXS-14. It comes with a ton of picks, though I only use the smaller feeler pick and the tension wrenches. I made a little video of me picking a couple of locks. It seems…
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Mikrotik Newsletter #31
The PDF can be found here. This is one pretty light…they are really just pimping a couple of the new products: The Grove5Hn($69) and the Grove A-5Hn($89). The specs are: 400 Mhz Atheros 32MB of RAM for the standard and 64MB for the A version 64MB of flash n 5GHz 802.11a/n 1×1 MIMO with N-male…
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Mikrotik 750G Already End-of-life?
While browsing the new RouterBoard.com site today I noticed that they have a “Product Archive” section. This section is described as “These products are not manufactured anymore, and are listed here only for reference.” In this section they have the RB750G listed. I hope this is a mistake! I use these constantly and there is…
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Mikrotik V5.3-5.4 Released
I lumped these together because they were released within two days of each other 🙂 These are really just bug fixes, no real feature additions. What’s new in 5.4 (2011-May-27 13:18): *) webfig – do not try to open many windows if first open was blocked by browser; *) RB4xx ether1 port flapping fixed; What’s…
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Block RFC-1918 Spoofed Traffic
A general rule of thumb in a service provider network is to block RFC-1918(private addressing) address space. You want to block this incoming from your upstream providers also, but generally filtering it in your network is a good idea. You will also want to block any traffic coming from your provider sourced from your address…