Category: Networking
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Gathering Information With Cisco IP SLA and Cacti
Modern enterprise networks often span provider networks, be it IPSec tunnels through the internet or a leased MPLS connection. If one is experiencing problems, how can you definitively diagnose these issues? There are few tools cheaper and more effective than using Cisco’s IP SLA ( IP Service Level Agreement), formerly SAA and RTTMON. In a…
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Endian Firewall – Community Edition
I’d not heard of these guys until a month ago. They have appliances and also a software based version you can install on your own server. Best of all, they have a community edition. I’ve downloaded a copy, but I’ve yet to actually test it. Here’s some of the features: Stateful Firewall – Pretty standard…
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Mikrotik IPSec Tunnel/VPN When Both Sides Have Dynamic IPs/DHCP
At first glance, one would think this is impossible. It is NOT impossible, thanks to some scripting and a couple of free services. This will work for straight IPSec tunnels, PPTP tunnels, IPIP tunnels or even IPIP tunnels encrypted with IPSec 🙂 Step 1 is to figure out what our public IP is and a…
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My Pan-Tilt Mikrotik
I had the desire, not the need, to be able to pan/tilt my Mikrotik AP from inside my house. It is a huge pain to go outside, climb the ladder, sit on the roof with my laptop and tune my AP. Yes I occasionally have to tune my AP. So I came up with a…
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Cisco – % telnet connections not permitted from this terminal
If you log into a Cisco device and attempt to telnet to another device and you receive the following message: % telnet connections not permitted from this terminal Then you need to modify your vty output line. Change vty 0 5 transport output none to vty 0 5 transport output telnet
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RB816 Daughterboard for RB800/RB600
It’s been something of a running joke; “When is Mikrotik going to make a switch?” Well, it appears as if they just did. Those shots look pretty good…I’m going to assume Normis took those 😛 Any way, this will increase the RB800/600s port density to 19 ports, which is a moderate size switch. Another interesting…
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Guess Who Came To Visit?
They happened to be in the area, so they dropped by to say hello. I really enjoyed their presentation style and the Account Manager, Darian, is a pretty cool cat. I’ve always wanted to learn the Netscreens(Juniper firewall appliance), so it looks like it might be time to do it. From what I’m told, JunOS(the…