May 2013 M T W T F S S « Feb 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 Blogroll
Category Archives: network saturation
The blog was down yesterday
The brief outage was due to a scheduled move of the servers to a separate rack and subnet dedicated to our work with the Center for Information Assurance & Cybersecurity (ciac) at the University of Washington Bothell (uwb), and a11y.com … Continue reading
Posted in 19.34 RCW, abuse, ajax, asterisk, auditing, BIG-IP VE 11.2, brctl, C.J. Insider, centos, Citrix Xen, colliertech, cryptography, css, debian, dns, Eating CenturyLink's Lunch, ESXi, F5, Free Software, html, investment, javascript, kerberos, kvm, libvirt, linux, LSI, lvm, mediawiki, MITRE, mysql, network neutrality, network saturation, Networking, NIST, nsa, NVD, open source, PeRC, perl, pgp, powerconnect, poweredge, PRCCDC, procurve, proliant, python, qemu, quagga, RADIUS, rate limiting, rumor mill, security, SELinux, shorewall, spam, squeeze, storage, Telephony, tls, tmm, traffic shaping, virtualization, WanJet 500, washington, web 2.0, wheezy, x509, xen
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software bridge loops suck, too
I didn’t realize that I had two of my machines attached to openvpn from the same l2 segment. It caused a network outage for about 24 hours. Sorry for the downtime folks. I believe that if I turn on stp … Continue reading
Posted in colliertech, debian, F5, Free Software, Hardware, LD1, LD11, LD36, LD40, legislative districts, network saturation, Networking, performance, perl, politics, proliant, spanning tree
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blog optimizations
Thanks to some recommendations from Jeremy, Pierre and Jeff, this blog should be running a lot less slowly. I’ve installed memcached, set up wordpress plugins, tuned apache MPM parameters, tweaked iptables and tc rules and beaten on the blog with … Continue reading
Back online…
Sorry for the outage, folks. We’re back up now. This time with a firewall. Ain’t that fun? Someone broke in to the machine in February and was using the un-throttled bandwidth to spam the world. I’ve added a throttle and … Continue reading
Posted in abuse, colliertech, mail, network saturation, Networking, rate limiting, smtp, spam, traffic shaping
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Why can’t I communicate on cell phones with static?
I was thinking… When there’s echo on the line or when I can hear breathing, I respond with silence and a delay to see whether the line is clean. This reminds me of [[CSMA/CD]]. Ha. My communication system is like … Continue reading
Posted in C.J. Insider, Hardware, network saturation, Networking
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DNS changes
I’m working on the family’s servers over vacation. I’m moving a bunch of the bandwidth-consuming bits off of the server on the T1. One of the services I’m moving to its own VM is bind9. I figure it should live … Continue reading
Posted in abuse, colliertech, conservatism, debian, dns, etch, family, Free Software, linux, network saturation, rate limiting
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Tagged Message Delivery Agent
http://tmda.net/ challenge / response layer
Posted in abuse, colliertech, Free Software, mail, network saturation, open source, spam
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spamassassin tls plugin
Anybody got a tls plugin for spamassassin? Something that will check to see whether incoming mail is signed by a certificate known to and trusted by spamd?
Posted in mysql, network saturation, performance, rss, spam, spamassassin, tls
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Network Neutrality in a nutshell
Network Neutrality is a term used to encompas the need for a balanced playing field on the Internet. Proponents for neutrality claim that having a tiered infrastructure will create a hierarchy of “haves” and “have nots.” The perceived problems would … Continue reading