slaptijack

As I mentioned the other day, I'm building a RADIUS client in Python for sending disconnect messages to Cisco routers.

One hang-up with the pyrad package is that it requires a dictionary file in order to map RADIUS attribute names to codes and types. In the case of my client …

I've been working on a RADIUS client in Python that can send a disconnect message (packet of disconnect) to a Cisco router. I'm using pyrad 1.2 for the project.

I ran into this problem pretty quickly:

POD: 192.168.9.9 request queued
POD: Illegal authenticator in POD from …

While doing some testing with Cisco Access Registrar (CAR) 5.0, I noticed that the test user had hundreds of old sessions hanging around:

--> query-sessions /r with-User X
Sessions with-User X for /Radius
  Sessions for /Radius/SessionManagers/session-mgr-1:
    S432 Key: 04000000000CF660, NAS: NAS.slaptijack.com, NAS-Port: 0, User-Name: X, Time …

Users of Citrix XenServer 5.6 are experiencing a problem where the cdrommon process begins consuming all CPU resources and affecting virtual machine performance. Using 'top' or 'ps auwx' from dom0 shows that the process is consuming 99% or more CPU resources. Users of Xen Cloud Platform (XCP) 0.5 …

>>> print "".join(" hello   world ".split())
helloworld

The key to the above is that split() separates the string on any amount of whitespace when no separator is specified.

Engineering firm CH2M Hill recently began moving away from VMware ESX to Microsoft's Hyper-V. CH2M Hill has been using VMware technology since 2005, but recently began the push toward Hyper-V in an effort to increase savings through more virtualization. The engineering firm believes it will save over \$280,000 in …

In a test lab, we ran into a situation where the connection between our Cisco Access Registrar (AAA) server and MySQL server was timing out. This forced the server to reconnect and resulted in the following errors:

 name/radius/1 Error Server 0 ODBC client (DataSource 'my_odbc', Connection 8): SQLExecute …

We ran across the following error on a MySQL slave server recent:

mysql> SHOW SLAVE STATUS \G
<snip>
Last_Error: Query caused different errors on master and slave. Error on master: 'Deadlock found when trying to get lock; try restarting transaction' (1213), Error on slave: 'no error' (0). Default database: '<database_name …

If you need to debug what queries your WordPress site is making, try adding the following PHP to your theme:

<?php
  foreach ( $wpdb->queries as $query ) {
    echo "$query[0]<br />";
  }
?>

For this code to work, you need to add the following line to wp-config.php:

define('SAVEQUERIES', true);

After that …

The situation: A Cisco 7604 with SAMI card is able to send packets from the individual IOS instances running on the SAMI PPCs, but is unable to receive packets.

The hardware: The table below describes the hardware involved.

The guys at Google have rolled out a few interface changes for Gmail users. So far, these changes have not been rolled out to Google Apps users.

New Look

The Gmail interface has been slimmed down to remove clutter and make it easier to find what you need. The result …

A visual reference identifying the Cisco 7604, Supervisor 32, and SAMI modules in a legacy WiMAX deployment.

As every system administrator is aware, keeping precise time on your servers can be critical. For example, if you use QueueMetrics for your Asterisk-based call center and the QM and MySQL servers are running with different times, users will notice confusing behavior as calls seem to arrive in the future …

For some reason, they don't make this completely obvious.

login: admin
password: admin

On one of the WordPress-based websites I maintain, I have removed the category base so that, when browsing a category the url doesn't end with /category/category-slug/. I accomplished that by putting a single '.' in the "Category base" text box of the Permalinks admin page. This worked fine until I …