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Posts in 2014

  • My IPv6 Services

    Sunday, April 13, 2014 in IPv6

    I’ve had CiscoDude.net and its associated services IPv6 enabled over native IPv6 for the past year. Before that some services were IPv6 enabled over a HE.net tunnel. Web services are the easiest I’d say, and were the first I implemented. …

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  • 1f j00 R R34d1N 7h12 m3m0ry j00 R pWN3D

    Thursday, April 10, 2014 in Programming

    Another huge blunder this week in the ubiquitous OpenSSL library secadv. This one’s called Heartbleed. You can easily check if your services are vulnerable at filippo.io/Heartbleed. This one is particularly scary as it allows reading random …

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  • Observium 0.14.4

    Sunday, April 06, 2014 in Monitoring

    I just noticed that Observium released a new Community Edition release (0.14.4) on April 1. The changes (and additions!!!) mentioned in the CHANGELOG are numerous, and include several security fixes – including for an SQL injection so it is …

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  • Learning Python: Part 2

    Sunday, April 06, 2014 in Programming

    I’ve moved up in time/history to the 1980’s with Python – INI files! I’ve modified one of my python scripts to now use ConfigParser to read in a .cfg file. The simplicity, built in functionality to do tons, easy …

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  • AS4761 April 2 2014 Prefix Origination Event

    Thursday, April 03, 2014 in BGP

    Yesterday afternoon, starting at 2:05PM local time, I received several notices about our prefixes being hijacked – announced by an ASN other than our own. The particular ASN that was advertising the prefixes in question was AS4761, Indosat, an …

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  • Learning Python: Part 1

    Sunday, March 30, 2014 in Programming

    I’ve heard a lot about python, its certainly a very popular language on Github, and I’ve been wanting to learn it for quite a while. This week ran though a quick 2-hour “Up and Running with Python” on Lynda.com. I’ve got …

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  • IPAM: NIPAP

    Sunday, March 23, 2014 in Networking

    While I wrote about IPAM last January, I never finished setting up everything in subnetsmngr. It was difficult to allocate a custom subnet, requiring going into the database to actually insert the prefix, and then rebuild the remaining subnets around …

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  • XKCD Passwords

    Sunday, March 16, 2014 in Systems

    XKCD is an awesome webcomic of romance, sarcasm, math, and language. It often has UNIX shell jokes, and other sysadmin humour as well. One particularly funny comic strip focuses on how terrible passwords are for people to remember, but easy for …

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  • iPerf UDP

    Sunday, March 09, 2014 in Troubleshooting

    I set out to test the connection between my house and my development workstation, using VOIP-like settings, and IPv6, just to say I’d done it. client side: $ iperf -c dev.ciscodude.net -V -u -b 64k -l 160 …

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  • goto fail

    Sunday, March 09, 2014 in Programming

    When learning programming, beginners are always taught that goto’s are dangerous. They are dangerous because of their syntax. A missed colon or semi colon can mean a vastly different program flow. This has come up twice in the last month, one …

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