slaptijack

The default username and password for all versions of Cisco Access Registrar (as of version 5.0):

Username: admin
Password: aicuser

Perhaps this will save you a little time someday.

Note: This post is a natural continuation of my post Command Logging is Vital to System Administration.

The primary purpose of sudo is to allow system administrators to execute commands as the superuser (AKA root). It allows a group of people to manage a system without the hassle of keeping …

In the following example, I'm going to set up a Simple Network Management Protocol version 3 (SNMPv3) user on a Cisco router with limited view of the system MIB.

• Create an SNMP view that limits the user to the system MIB.

  ROUTER(config)# snmp-server view SYSTEM system included
  

• Create an …

I use Unison to keep a few directories synchronized between my various workstations and a collocated server. Unison works great, but occasionally has problems in my mixed operating system environment. The most frequent problem is

Failed: Destination updated during synchronization

This error message is not very helpful at all. Newer …

After all this time, I still love VirtualBox, the open source hypervisor from Sun (now Oracle). I use it almost everyday on my iMac to either test something in Windows XP or see what's going on in some version of Linux. It's been almost a year since the release of …

If you're using Red Hat Enterprise Linux (RHEL) or one of it's variants (CentOS, etc.), you may have noticed that using a non-standard document root for your Apache-based web site results in a DocumentRoot does not exist warning if the directory exists. The most likely cause of this problem is …

It's not often that I have to restart a Asterisk VoIP PBX. I recently upgraded to the latest version of Asterisk 1.4. After the installation was complete, I restarted the service and everything appeared to be functioning OK. Processes were running and owned by the asterisk user. When I …

Records a single observed IPv4 packet-size average without enough traffic context to guide capacity planning or network analysis.

Protocol Basics

Layer: Application Transport: <acronym title="Transmission Control Protocol">TCP</acronym> or <acronym title="User Datagram Protocol">UDP</acronym> Port(s): 5060, 5061 RFC(s): 2543, 3261

SIP (Session Initiation Protocol)

SIP is by far the most popular protocol used in VoIP communication today. SIP was designed as a …

If you have an interest in information security from a technical or managerial point of view, check out Principles of Information Security. It does an excellent job of presenting material for both audiences.

If you have other vendors you would like to see on this list, send me a message …

Somehow, I have let my Gmail inbox get totally out of control. I don't know if it was the holidays or what, but as of this morning, I had over 800 unread messages in my Gmail inbox. I decided a little while ago that it was time to focus on …

Importing Mozilla Firefox bookmarks into Safari on your Mac is really easy. Firefox stores its bookmarks in an HTML file that can be parsed by Safari. In Safari, simply click on the File menu and select Import Bookmarks. This will open a file selection dialog box. Firefox stores its bookmarks …

Previously, I mentioned that I was unable to remove the FAX= portion of the string produced by Cisco's $s$ (or $d$) macro in a T.37 store and forward fax configuration. That's still the case. I have found no way of doing this inside IOS. If it's possible, I've …

If you get this error when trying to save something in the Django admin, it's probably because you forgot to synchronize the database after adding the admin application. If you are using a pre-1.2 version of Django, you can simply:

$ ./managy.py syncdb

Django 1.2 (which is currently …

Former Lotus Notes users may prefer to see unread messages in red rather than just bold. Microsoft Outlook uses two different views to display message lists to the user: Messages and Messages with AutoPreview. We will need to change the font color to red in both views to ensure that …