Site map of cromwell-intl.com
Linux and Unix
Security-oriented (also see the security section below)
How to harden a Linux or OpenBSD installation
How to break into Linux (and how to prevent this)
Analysis of multiple intrusions into a poorly-configured Linux system
How to set up and use SSH
How to set up encrypted storage on Amazon EC2
How to make
sendmail
use SSL/TLS whenever possible
Integrating a UNIX client into a Kerberos realm controlled by a Windows Active Directory server
Linux/Unix Administration
Linux/UNIX Command Fundamentals and the File System
TCP/IP configuration commands for Linux/UNIX, MacOS X, Windows, and Cisco IOS
How Linux Boots
Transitioning from RHEL / CentOS 5 to 6
Installing CentOS Linux on an Alpha
Package Management on Linux and BSD — A Phrase Book for RPM, apt-get/dpkg, and pkg_*
How to Build Linux Kernels
How to Build Linux Kernels on Alphas
Exploring the Linux Kernel
How to Build OpenBSD Kernels
How to Add MP3 Support to Red Hat, CentOS, and Fedora
How to use FTP (essential skill sadly unknown by many)
Speeding up file transfer with
tar
and
ssh
Display the word count in the Vim statusline
Raspberry Pi
Linux and other operating systems on a low-cost 86×54 mm board
Wired and Wireless, IPv4 and IPv6, Static and DHCP, WPA2-PSK Security
Building an OpenVAS Vulnerability Scanner On the Raspberry Pi
Building a Network-Attached Storage Appliance with the Raspberry Pi
Error messages
Fixing Error Messages About Missing GTK Modules
Failed to load module "libcanberra-gtk-module.so": libcanberra-gtk-module.so: cannot open shared object file: No such file or directory
Multimedia
Fix for: My Microphone Is Not Working
OpenBSD
Running OpenBSD on a Dell Inspiron 1000 Laptop
Compiling Software on OpenBSD
Wireshark
OpenCV
OpenVAS
Rainbow Crack
WPA2 / 802.11i Wireless Networking Security on OpenBSD
Apache
Detailed analysis of Apache logs with simple Linux/Unix commands
How to enable compression with mod_gzip using the modified Apache web server in OpenBSD.
How to create and install keys and certificates for a secure Apache web server
How to password-protect web pages
Virtualization
Networking in VMware: How it works and how to modify it.
How run put the QEMU emulator and Linux on a USB device, so you can run Linux within a window on a hosting maching running Linux or BSD or Windows
How to install and run Windows within the QEMU emulator on an OpenBSD desktop
Other Linux and Unix Tips and Tricks
Using BitTorrent Magnet Links with Firefox and Chrome
Digital Cameras, Linux, and BSD
Why I Don't Fear UEFI (Not much. For now, anyway)
X Configuration Issues on Linux and BSD
A few Windows things, if we must
Installing Office 2007 on Windows XP
Fixing the PATH on Windows so you can easily run useful software that you had to add
Strange Linux/Unix-related stuff
The Gallery of Crash Dump Screens
UNIX the Supermodel
Strange pictures: UNIX the Fire Extinguisher
Strange pictures: Linux the Laundry Detergent
The Gospel of Tux
Biblical Unix
Common Windows error message
What might be Windows Vista source code
Networking with TCP/IP
Networking Fundamentals and Terminology
Network and Telecommunication Cables
TCP/IP Networking in general
How IP Routing Works
How VLAN (Virtual LAN) Technology Works
How NAT (Network Address Translation) Works
TCP/IP configuration commands for Linux/UNIX, MacOS X, Windows, and Cisco IOS
Quick Overview of Protocol Header Structures
Breaking in, initializing, and configuring a Cisco 2000/2500/2600/3000/4000 series router
Breaking in, initializing, and configuring Cisco and 3com switches
>Cisco Catalyst 2900 XL Ethernet switch disassembly and repair
What is IPsec? — A simple explanation of IPsec, the network security it provides, and how to set it up on Linux
WAN Specifications
WLAN Specifications
Network Attack Analysis — Classifying and Identifying Attack Patterns With Textual Analysis Tools
How to read
netstat -a
output
How to read
netstat -s
output
Computer and Network Security
My public key
Digitally signed messages and how PGP signs e-mail.
Fundamentals
Just Enough Cryptography
Cryptographic Terminology
Symmetric and Asymmetric Ciphers
One-Time Pads
Cipher Strength and Key Length
Cryptographic Hash Functions
Brute-Force Search for Unusual Hash Outputs
Digital Signatures and Certificates
Cultural Use of Cryptography
Further Reading
How To Verify Digital Signatures
TCP/IP
How NAT (Network Address Translation) Works
Information security
Confidentiality and Data Integrity Tools
Government and Industry Regulations
Availability Tools
Computer Forensics
Public-Key Infrastructure (PKI) Providers
How to set up encrypted storage on Amazon EC2
User Authentication Tools
User authentication weaknesses and defenses
How passwords work and how to break them
Reverse-engineering the hacker: What are typical hacker passwords guesses?
System security
System Security Auditing Tools
OS-Specific Security Issues
Intrusion Detection Tools
Analysis of multiple intrusions into a poorly-configured Linux system
Attacks on Virtualization Security
Hardware Exploits
Physical security
Network security
Network Security Auditing/Monitoring Tools
Network Monitoring / Packet Sniffing Tools
SSL/TLS Security
What is IPsec? — A simple explanation of IPsec, the network security it provides, and how to set it up on Linux
Firewall Tools
World-Wide Web Security
QR codes and Near-Field Communication risks
TCP/IP Stack Hardening
Network Attack Analysis — Classifying and Identifying Attack Patterns With Textual Analysis Tools
Cloud Security
An Overview of Cloud Security
Security Concerns of Cloud Technology Users
Cloud Security Blog — Thoughts from Time to Time on Cloud Security
Malware, Social Engineering, and Software Security
Why HTML E-mail is Dangerous
Analyzing Web Mail Abuse and Spear-Phishing
Analyzing a "Phishing" Scam Attempt
Learn about scams, spam, phishing, and worse, and take some great Phishing IQ tests
Analyzing Hostile Data
Gibe-F Worm, also known as the Swen Worm, one of the more interesting pieces of malware I have.
Downloader.Tibs.Gen-1 worm
Bagel worm
Mytob worm
Mydoom worm
Downloader.Small-1109 Trojan
Stration.JH Worm
Sober.U-3 Worm
Trojan.Agent-59561
Trojan.Exchanger.DL
Trojan.Downloader
Hacking the Human — Bank scam
Fighting Internet Hoaxes
Software Security Tools
Reference material
Security-related RFCs and Mitre Nomenclature Projects
Recommended Reference Books — Best practice how-tos, background information, and more
Infosec Bulletins
General Information
Cyberwar
Other Organizations' Policies
Infosec Response Teams
The Government Electronic Surveillance Agencies
Keeping Track of the Bad Guys
Separatist, Para-Military, Military, and Intelligence Organizations
Textual Analysis
Network Attack Analysis — Classifying and Identifying Attack Patterns With Textual Analysis Tools
3-D Data and Image Analysis
3-D Laser Scanning for Biology, Anthropology, and Archaeology
3-D Range Scans of Trilobite Fossils
Composite Light-Stripe Images
Multi-Viewpoint Data Registration
Raytracing
Contrast Enhancement through Localized Histogram Equalization
How to Scan X-Ray Films
Publications
Bob Cromwell's publications
Basics of Turkish Grammar
Introduction
Background, list of real reference texts
Word order, orthography, vowel classes and variable vowels, HTML codes for Turkish characters
Pronouns, nouns, possession, adjectives, adverbs
Verbs
An attempt at an alphabetical list of Turkish suffixes (really morphotactics)
Russian Grammar and Typesetting
Russian Grammar
Cyrillic in Latex and Postscript and Unicode
Greek Grammar
INFOSEC History and Military Tourism
Belgium — The Battle of the Bulge — Bastogne and the Ardennes Forest
France — The D-Day landing beaches and other sites in Normandy
Germany — WWII German Enigma Information Security
Italy — Paestum, south of Salerno, Operation Avalanche: Allied landing of September 1943
Turkey — The Gallipoli Campaign, 1915
UK
UK Cabinet War Rooms
Bletchley Park
WWII and Cold War Military Tunnels in the White Cliffs above Dover
Swingate Chain Home Radar Station
WWII glider base outside Harwell
Scapa Flow and the Churchill Barriers
UK WWII Military Communications Gear
USA
Finding the American Black Chamber in New York
Washington DC — Arlington Hall
Washington DC — Naval Security Station
Herbert Yardley's restaurant in Washington DC
National Security Agency museum
Historical Electronics Museum (radar and military radio, just outside Baltimore-Washington International Airport)
USS Chaumont (AP-5)
DL3G — Delta Lima 3 Green — Cold War watch tower
Travel Suggestions
Athens to Paris by Train
Alaska
Belgium
The Battle of the Bulge — Bastogne and the Ardennes Forest
Namur and Dinant — Two Historic Towns in the Northwest Ardennes
Art Nouveau Architecture in Brussels
Comic Book Art in Brussels
Belgian Beers and Brussels Cafes
Surreal Statues in Brussels
Bulgaria
Sofia
Veliko Tarnovo
By Train through Bulgaria
Bulgarian Food and Drink
Canada
Czech Republic
Egypt
Cairo
Giza Plateau — Pyramids and Sphinx
Luxor and the Valley of the Kings
Aswan and Abu Simbel
Mount Sinai and Dahab
Estonia
France
Renting a canal boat in France
The D-Day landing beaches and other sites in Normandy
Jim Morrison in Paris
Marseille and the Coast Road
French School Lunch Menus
Detectives in French Fiction and Life
Barbégal, Les Baux-de-Provence, and St-Rémy-de-Provence
Thomas Jefferson in France
Ronin
Movie Locations
Some Americans Don't Realize That They Have Electricity in France
Megaliths
Pierre Tourneresse, a Neolithic Passage Grave in Normandy
Megaliths in the lower Loire Valley — Saumur and Gennes
Dolmen de la Pitchoune — A Megalithic Dolmen structure in Provence
Greece
Logistics
Athens and Cape Sounion
The Peloponnese: Corinth and Olympia
Meteora
Mycenae
Tiryns
Delphi
Thessaloniki
Santorini (Thira)
Mykonos
Ios
Delos
Paros
The other Greek islands: Patmos, Rhodes, Naxos, Samos
Greek Food and Drink
Greek Ferries and Island Hopping
Train Travel in Greece
Bus Travel in Greece
Roadside Greek Orthodox Shrines
Hungary
Italy
Atrani and the Amalfitani Coast
Ruins in Rome — Pompey's portico and the site of the Senate.
Napoli (Naples)
Pompeii
Nero's Villa Poppaea at Oplontis
Paestum, an ancient Greek city in southern Italy, and Salerno.
Umbria — Perugia, Assisi, Sorento, Orvieto, and the Umbrian countryside and hill towns
Liguria — Cinque Terre — Riomaggiore, Manarola, Vernazza, Monterosso al Mare, Corniglia
Travel by trains in Italy
Driving in Italy, and the Long-Delayed Italian Traffic Tickets
Japan
Jordan
Latvia
Lithuania
Mexico
People's Republic of China (Hong Kong, Guanzhou, Yangshuo)
Getting There, and Dealing With The Languages
Hong Kong
Teaching a Courer in Hong Kong, and Visiting Macau
Guangzhou, Part 1 — Logistics, Shamian Island and the Pearl River
Guangzhou, Part 2 — Qingping Market, Temples, Street Scenes
Yangshuo, Guangxi Province
Up the
Li Jiang,
or Li River
Poland
Romania
Bucharest
Painted Churches in Bucovina and Gura Humorului
Romanian Food and Drink
By Train through Romania
Driving through the Carpathian Mountains
Russia
Syria
Trinidad
Turkey
General information
İstanbul
Aphrodisias
Ephesus — the ruined city
Ephesus — A walk from Selçuk to Ephesus
Ephesus — The Temple of Artemis
Ephesus — Maryemana
Gallipoli
Göreme and Cappadocia
Bodrum and the Mausoleum of Halicarnassus
Silk Road Hans
Hatuşaş
Konya
Mountain Treks in the Beşparmak Mountains
Nemrut Dağı — Mount Nemrut
Olimpos and the Chimera
Pamukkale, Hieropolis, and Laodicea
Turkish food
Getting around Turkey on buses
Getting around Turkey on trains
U.K.
London
London — Cabinet War Rooms
London — Bletchley Park
London — Lee Ho Fook's
Megaliths and Stone-Age Structures
Stonehenge
Avebury
Hiking along Hadrian's Wall
Oxford
C.S. Lewis and J.R.R. Tolkien at Oxford
WWII glider base outside Harwell
Dover
WWII and Cold War Military Tunnels in the White Cliffs
Swingate Chain Home Radar Station
Scotland and Orkney
Fort William area
An ascent of Ben Nevis, the highest mountain in Britain
The Road to the Isles, over 22 miles (37 km) overland across the high Scottish moors of Lochaber from Corrour Station to Fort William
A walk through Glen Nevis and the Water of Nevis
Pitlochry — The Bealach Walk and Megaliths
Orkney Islands
Skara Brae, a Neolithic Village
Neolithic Orkney — Maeshowe, the Ring of Brodgar, the Stones of Stenness, etc
The West Coast Walk — Along the Cliffs of Orkney's Mainland Coast
The Sousterrain — An Underground Pict Dwelling in Orkney
Scapa Flow and the Churchill Barriers
The Isle of Iona (and Oban, and Mull)
The Grit Boxes of Scotland
Navigating with the National Grid system and Ordnance Survey maps
Places to stay in the U.K.
U.S.A.
Alaska
Baltimore
Baltimore — Edgar Allan Poe & Mid-Day at The House of Omnivores
Otakon, Camden Yards, and the Bromo-Seltzer Tower
National Security Agency museum
Historical Electronics Museum (radar and military radio, just outside Baltimore-Washington International Airport)
Detroit and its Post-Apocalyptic Architecture
Los Angeles — Venice Beach
Montgomery, Alabama
New York
Arrive by air at LaGuardia Airport
Skating Manhattan: 15.5 miles from the Bronx to Battery Park on a longboard
Touring the
Ghostbusters
locations in New York
McGee's, the model for MacLaren's in
How I Met Your Mother
Fictional Architecture of Manhattan
The Counterfeit Coffee Caper: My encounter with NYPD
Walking to work along the East River, and spectacular views of New York Harbor from the 31st Floor
Lower East Side: Rivington Street
Lower East Side: Stanton Street
New York Internet Infrastruction: Sites normally seen only as
traceroute
hops
New York residences of Hunter S Thompson
New York home of Humphrey Bogart
Franklin Delano Roosevelt's home in New York
Where Barack Obama lived, studied and hung out in Manhattan in the early 1980s
Looking for the home of the last Ottoman Sultan
Edgar Allan Poe's home in the Bronx
H.P. Lovecraft's home in Brooklyn and the Nicholas Roerich Museum in Manhattan
Finding the American Black Chamber in New York
Cortlandt Alley: The Only Alley in Manhattan
The many connections between Marvel Comics and Manhattan
Philadelphia — Edgar Allan Poe's House and Two Scoldings
San Francisco — Haight-Ashbury, The Grateful Dead, Jefferson Airplane, and the Summer of Love
Washington DC
Looking for the National Christmas Tree behind all the security fencing
Arlington Hall
Naval Security Station
Herbert Yardley's restaurant in Washington DC
Some goofy Masonic Sights
Transport in the U.S.A.: Bus, Train, Car
Megalith Travel
How to replace the SIM card in your GSM phone and avoid expensive international roaming charges
How to repair a backpack
Radio stuff
HF QRP operation — KC9RG
Morse Code
A Simple Audio Tone Control Circuit
Building your own RF dummy load and power meter
Rhombic antennas — Classic designs for UHF & microwave
J-Pole antennas (end-fed half-wave Zepps)
Small HF antennas — shortened doublet designs for 10.1 and 14 MHz
Balanced line impedance and radiated power
The Radio Spectrum for Beginners
Radio Frequencies — Ham bands and various utilities
Powerful Medium-Wave Stations in North America, Central America, and the Caribbean
Radio propagation
Construction / repair / modification references
Repairing a Tektronix 2445A oscilloscope
Building your own oscilloscope probes
How to fabricate circuit boards, transferring the pattern with a laser printer, and mixing up your own etching solution
Modifying an Icom IC2-SAT transceiver for wide frequency coverage, Part 1
Modifying an Icom IC2-SAT transceiver for wide frequency coverage, Part 2
Modifying an Icom IC-229 transceiver for wide frequency coverage
Modifications for the Icom IC-3220 VHF/UHF transceiver
Internet "Radio"
Various Technical Topics
Multimedia File Tricks:
How to Convert PAL DVDs to NTSC, Create and BurnDVDs, and do Other Video Conversions
How to copy DVDs, even those with CSS encryption and copy protection, using free software and free operating systems
How to Download Videos from YouTube and convert them to XviD and DivX
How to Convert Audio Files from WMA or FLAC to MP3
How to Extract MP3 Audio from a Video File
How to Rotate Digital Camera Movies by 90° and Convert Them to DVD
Some Vaguely Steampunk Projects
How to Interface a Soviet Багта-50 1955 rotary-dial telephone with the GSM network and VoIP
A Fully Metered Power Controller and Lamp
A Light Fixture with an Early 20th Century Esthetic
How to Control a Stereo with a 250-volt 100-amp Double-Pole Knife Switch
How to fabricate circuit boards, transferring the pattern with a laser printer, and mixing up your own etching solution
Computer and audio/video hardware:
Install your own DSL line
HDMI cables and their connector pinouts
SVGA cables and their connector pinouts
EIDE / PATA / SATA / USB / Floppy cable pinouts
The Samsung Galaxy S2 smartphone
How to install CyanogenMod on the Samsung Galaxy S2
How to set custom ringtones, alarms and notification sounds on a Samsung Galaxy S2
SIM unlocking the Samsung Galaxy S2
How to take a screenshot on the Samsung Galaxy S2
How to connect the Samsung Galaxy S2 to Linux or OpenBSD
How to access the Samsung Galaxy's secret test menu
HTML and Web Authoring:
HTML Tools
How to to Search Engine Optimization
Browser and Display Greyscale Test Page
How To Use Google Adsense Within XML/XHTML
Other Electrical and Electronic Topics:
Motorola DCT 2000 Set-Top Box Diagnostics
Attempting to Recover Data from QuickDisk Media
How To Recover A Digital Camera That Has Been Submerged In Liquid
Measuring AC Power Usage
Nonsense
Toilets of the World
Teaching horror stories — No such thing as a stupid question? Hah!
Bizarrely irrelevant requests for quotes and bids that I have received, and the nonsense I submitted.
Simu Construction Company, Ltd and the Zambian Lavatories
Ittehad Chemicals Ltd and OPERATION PAKISTANI BALLDROP, PART ONE
Ittehad Chemicals Ltd and OPERATION PAKISTANI BALLDROP, PART TWO
Atlantic Gulf & Pacific Company of Manila and OPERATION MANILA BOOKLIFT
Metito Overseas Ltd and the BAHRAIN EXCAVATION
Seman Peru and the SVERDLOVSK GAMBIT
If Occupy Wall Street Really is The 99%, Then What Does That Make Us? Dreadlocked white drummers, to a surprising extent
West Slayter Hill Tailgate Association
The Gallery of Crash Dump Screens
Signs That Make No Sense
Everything You Need to Know About Oliver Cromwell — Free Download for Term Papers and School Reports
Crom-Fu, a mixed martial art fighting technique invented by Oliver Cromwell
Brilliant movie concepts overlooked by Hollywood — "The Odyssey" and "Iliad" as remakes of "Gilligan's Island", "Battlestar Potemkin", "Show White and the Magnificent Seven Dwarves", Jane Austen as a spy-assassin, and worse.
Some Thoughts About Writing Technical Material: In no particular order, as they occur....
The Fingerbox
— the history and technology of this device
.
Sarah Palin baby name and advice generator
Alternative History of the Beatles
If Sigmund Freud had written
The Cat in the Hat
A Comparison of Various News Sources
(Statistical analysis showing that Fox "News" is as worthless as Pravda)
Useful Latin Phrases
Guaranteed Super Lucky Numbers
The Dead Bunny Hat Page
How Everything Connects Through Movies
TCP/IP Haikus
Cryptographic Haikus
The Theology of Santa Claus
How to Brew Your Own Beer and Mead
Mead background
How to brew mead
How to brew beer
Brewing in ancient history
Belgian Beers and Brussels Cafes
Home
Linux/Unix
Networking
Cybersecurity
Travel
Technical
Radio
Site Map
Contact
©
Bob Cromwell
May 2013. Created with
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and
ImageMagick
, hosted on
OpenBSD
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Apache
. Root password available
here
, privacy policy
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.