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bobbitt's blog

Kids Quotes

...because sometimes kids say the darndest things.

Sarah

Age 1-2

"Look at all the STUFF!" (Said to Annette, while she was getting in the shower.)
- 1998

"Holy Jesus, it's beautiful!" (Said about a newly added Christmas decoration.)
- December 1999

Age 3

"Daddy knows all about cheese in my hand." (Said to DJ when I went to get Sarah a cheese slice.)
- July 2000

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How to check for an open relay

To see if yourserver.com is an open relay, you can run through the following sequence on any box that has a telnet client:

telnet yourserver.com 25
HELO myserver.ca
MAIL FROM:
RCPT TO:
DATA
From: "Relay Test"
To: Mike
Subject: Open Relay Test
This is a relay test. A properly configured mail server
should decline to relay this message.
 
.
QUIT

Wireshark and tcpdump

Wireshark and tcpdump are extremely powerful network troubleshooting tools. Here are some command examples that may be useful.

Using a Linux Webcam

It's actually surprisingly easy. Install fswebcam (preferably via RPM) and then run this command:

/usr/bin/fswebcam --quiet --background --loop 120 --skip 40 \
--timestamp "%d-%m-%Y %H:%M:%S (%Z)" --png --palette png \
--font /usr/share/fonts/liberation/LiberationMono-Regular.ttf \
--resolution 640x480 --info "The Bobbitt Family" --top-banner \
--save /var/www/webcam/webcam.png

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Adobe Photoshop Tips

Colouring Pages

  • Open the image
  • Image --> Image Size --> 720x540
  • Image --> Mode --> Grayscale
  • Filter --> Sketch --> Photocopy
  • Settings
    • Detail: 2
    • Darkness: 25
  • Blur More

Army.ca Intro Pics

  • Image --> Adjustments Gradient Map to #003300 --> 009900 (reverse)
  • Filter --> Sketch --> Photocopy
  • Settings
    • Detail: 12
    • Darkness: 50
  • Image --> Adjustments Gradient Map to #003300 --> 009900 (reverse)

The Joy of OpenSSL

Get into the correct directory:
cd /etc/pki/tls/certs

Generate key
openssl genrsa -des3 -out mike.key 4096
chmod 600 mike.key

Generate signing request
openssl req -new -key mike.key -out mike.csr
chmod 600 mike.csr

Get the CA to sign the request
openssl x509 -req -days 10000 -in mike.csr -out mike.cert \
-CA /etc/pki/tls/certs/army.ca/Army.ca_CA.cer \
-CAkey /etc/pki/tls/certs/army.ca/Army.ca_CA.key -CAcreateserial

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