Posted on in Networking
For those new to Cisco networking, it is often difficult to remember that changes to a Cisco network device are applied immediately. After all, it seems reasonable to assume that changes should need to be applied, just like clicking the 'Apply' button on a Netgear wireless router. Unfortunately, that is …
Posted on in System Administration
Although this site isn't about job searches, the fact of the matter is that most network and system administrators have an interest in getting paid for their efforts. (Personally, I didn't get into Cisco networking for the glamorous parties with Paris Hilton, but maybe you did?)
J.D. at Get …
Posted on in Networking
Ars Technica recently discussed the effect YouTube has had on the popularity of P2P networking. According to a study done by Ellacoya Networks, HTTP traffic has surpassed P2P protocols as the dominant form of Internet downloads for the first time in four years. Considering my recent discussion of the top …
Posted on in Graphics Design
Now, through the magic of FeedBurner and email, you can get daily updates of the happenings here at Slaptijack. To get an update when new content is posted to the site, simply enter your email address in the form below, and enjoy the flow of SlaptiGoodness.
Once you sign up …
Posted on in Software
Currently, I use mysqldump to backup several large MySQL databases amounting to millions of rows of data. During the dump process, tables get locked for reading. 99% of the time, this system works just fine.
Ever so often (perhaps every 50-100 dumps), a read lock will hang on a table …
Posted on in Networking
Robin Gareiss of Nemertes Research has a put together a nice list of questions for potential WAN providers. Most of the questions are focused on non-technical issues like billing and customer service. In fact, the most technical question in the list is
- How many classes of service do you provide …
Posted on in Graphics Design
John Chow, Evil Genius, is once again up to his evil ways. This time, he's giving away an LG 24" wide-screen LCD monitor! As John knows, in order to make money, you have to spend money. This contest is sponsored by BlueFur, who not only hosts John Chow dot Com …
Posted on in Software
Due to security vulnerabilities in WordPress 2.2, Slaptijack has been upgraded to WordPress 2.2.1. As always, if you notice anything amiss with the site, please let me know.
The upgrade fixed the following security vulnerabilities:
Posted on in Networking
If you are using your Cisco Catalyst switches to
insert DHCP Option 82 information
and you are also using your Cisco routers as DHCP relay-agents (via ip helper-address),
you'll notice right away that your Option 82 enabled DHCP requests are not being
forwarded by your routers.
As a security measure …
Posted on in Graphics Design
Just a quick note.
Slaptijack recently broke into the Technorati Top 100,000. Obviously, this doesn't mean a whole lot (and may not last long), but it's sure neat to see that Rank number shrink from 7 digits to 5 over the last two months. With a little luck, and …
Posted on in Networking
If you've ever needed to reset a Cisco Catalyst switch to it's factory default (locked out, perhaps?), you've probably spent some time digging around on Cisco's web site. The Catalyst password recovery procedure starts off by reseting the Catalyst to it's original factory settings. Below, I'm going to give you …
Posted on in Networking
If you're interested in DHCP Option 82 in your Cisco Catalyst-based network, you'll be happy to know that the configuration can be summed up in 4 easy steps.
ip dhcp snooping. Although we're only turning this on to get …Posted on in Software
Someone looked over my shoulder the other day and was blown away by my MySQL client prompt.
(slap@localhost) [slaptijack]>
The boring default client just acknowledges that you are using MySQL and nothing more. This prompt indicates your username, the server you are working on, and the database you are …
Posted on in Networking
How many times has this happened to you?
SLAP#write memory
startup-config file open failed (Device or resource busy)
If you work in an environment where multiple users have enable access on Cisco devices, you've probably seen it more than once. This particular error is caused when another user has …
Posted on in System Administration
This post relates to pre-Leopard versions of Mac OS X. Unfortunately, Leopard hosts that are configured via DHCP use the DHCP assigned DNS server before any statically configured servers. Check out the next post in this series to find the necessary tweaks for Leopard.
If you've been following along in …
