Networking

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Don't trust Web Designers Web designers - I'd like to take some of these people and whack 'em one upside the head.. I can't tell you how many times one of these firms has screwed up one of my customers by not having any technical understanding of what the heck they are doing.
Basic (very basic) TCP/IP Think about the early telegraphs and Morse code. Press the telegraph key in the right pattern and that means the letter "A" to the person at the other end of the line. Morse code is just patterns of "on" and "off".
CompTIA Network+ Study Guide I could quibble about presentation and organization. There are things I would have explained differently, there are places where I would have been sure to mention X while explaining Y. That's very minor: in general you'll find the author's chatty style both enjoyable and very understandable.


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Title Date Comments
Fishing for an unknown device   2009 11  2009/11/11 19:46 TonyLawrence

Network Know-How   2009 10  2009/10/08 10:48 TonyLawrence

More routers used as switches   2009 10 

Why can't my other sub-net browse the Visionfs or Samba shares?   2009 09  2009/09/15 13:38 BigDumbDinosaur

A primer on networking and routing topologies   2009 09 

A gentle routing tutorial   2009 09 

An Unexpected IP   2009 08 

Peer to peer networking using bittorrent - technology and dynamics   2009 08 

The amazing tool called netcat   2009 08 

What is p2p?   2009 08 

Centos ssh failure   2009 06  2009/06/08 18:51 TonyLawrence

Basic (very basic) TCP/IP   2009 06 

 
 
 
 
CompTIA Network+ Study Guide   2009 05 

Dealing with Duplicate IP addresses   2009 04  2009/04/30 11:53 TonyLawrence

Don't trust Web Designers   2009 03  2009/04/07 15:51 TonyLawrence

Alternate Network Configurations with OS X   2009 03 

Blocking Unwanted Visitors   2009 03 

Multitech RF850 Linux Router   2009 01  2009/01/29 18:09 NickBarron

Network Subnets for Humans   2009 01  2009/01/29 11:58 NickBarron

Does Verizon really think 15% packet loss is OK?   2009 01  2009/01/09 19:14 NickBarron

VMware Networks, Bridged vs. Nat vs. Host   2008 12  2009/05/03 20:35 Ikioi

The E-Myth Revisited   2008 11  2008/11/26 00:41 BrettLegree

Power failures and IP addresses   2008 11 

Linksys RV042 VPN   2008 11  2009/11/05 14:49 hombrey

The Last Time I Climbed a Ladder   2008 11  2008/11/03 16:46 TonyLawrence

Do-It-Yourself Linux   2008 09  2008/10/28 00:14 goldenguras

Samba Configs - six hours!   2008 07  2008/07/30 05:02 JohnB

Nat-nat   2008 07  2008/07/10 15:20 BruceGarlock

Cables and switches basics   2008 04 

Wrong DNS causes interesting glitch   2008 03 

It doesn't work that way   2008 03  2008/03/09 01:23 TonyLawrence

A Change of Address   2008 03 

The Book of Wireless, 2d Edition   2008 02 

Everything needs RFID   2008 02 

Web Dummies   2008 01  2008/01/15 15:45 TonyLawrence

Mac Screen sharing is not just for Macs   2008 01  2009/07/24 19:09 TonyLawrence

Router down   2007 12 

One Smart Rabbit   2007 12 

Slow Firefox DNS Mac OS X Leopard   2007 12  2008/09/04 21:05 thomas

Bonjour Discovery   2007 11  2007/11/23 14:49 drag

The 700 MHz Spectrum   2007 11  2007/11/01 21:49 drag

Gmail vs. in-house Mail Server   2007 10  2009/01/28 13:58 TonyLawrence

Lazy DNS   2007 10 

DNS puzzler   2007 09  2009/07/05 16:24 Bob

DNS troubleshooting   2007 08 

Vulnerability Scanning   2007 08  2007/08/24 02:37 TonyLawrence

HP's CloudPrint   2007 08  2007/08/23 13:45 BigDumbDinosaur

The Practice of System and Network Administration (second edition)   2007 08 

Network Warrior   2007 07  2008/02/04 12:04 anonymous

Do you really need a domain controller?   2007 07  2009/10/27 12:40 staffsguy50

 
 
 
 
Wireless print servers   2007 06  2007/06/07 12:44 MikeHostetler

Fortinet Firewall Virtual IP's   2007 04 

Fortinet Firewall Transparent Mode   2007 04 

Fortinet Routers   2007 04 

Kerio Winroute Firewall vs. Hardware Routers   2006 12  2009/02/25 04:48 TonyLawrence

Losing data over VPN   2006 11  2009/05/11 19:18 TonyLawrence

The vpn that wouldn't   2006 08  2006/08/18 10:49 TonyLawrence

Zeroconf   2006 07  2006/07/07 09:31 drag

Bad routers   2006 06  2006/12/22 15:19 BigDumbDinosaur

ssh forwarding   2006 06 

Loose cables   2006 06 

Inward Bound   2006 06  2006/06/02 12:40 BigDumbDinosaur

Load Balancing   2006 05  2009/09/14 21:44 FranklinMoreson

Linksys WAP   2006 05  2006/05/22 14:09 MikeHostetler

Can't connect to Internet   2006 04 

Who said that?   2006 04  2006/04/09 04:48 BigDumbDInosaur

Charging for email   2006 03 

Keep in touch (tcp keepalives etc.)   2006 02 

Why you need a true secondary DNS server   2006 02 

New Dell machine kills server   2006 02  2009/04/05 02:11 oldmacminiman

An Annotated Guide To Samba Configuration   2005 09 

What is a router?   2005 09  2009/10/15 00:36 BigDumbDinosaur

But it doesn't use telnet!   2005 09  2005/09/16 14:43 BigDumbDinosaur

Control your domain registration data   2005 08  2005/08/23 17:55 TonyLawrence

Mighty Sockets   2005 08 

 
 
 
 
Jim Mohr's SCO Companion   2005 07 

Samba-3 By Example and The Official Samba-3 HOWTO and Reference Guide   2005 07 

MAC Address   2005 07 

host, dig   2005 04 

IP spoofing and automatic blocking   2005 03 

tsclient,rdesktop: Tech Words the Day   2005 02 

Samba problems   2005 02  2006/02/21 15:41 anonymous

Map network drive, connect as different user to same Server   2005 02  2009/07/23 00:43 anonymous

Internet Sharing using a linux box   2005 02  2005/12/10 09:24 anonymous

RADIUS: Tech Words the Day   2005 02 

Time-To-Live: Tech Words the Day   2005 01 

Transferring mail to a new mail server   2005 01 

Swarmstreaming: Tech Words the Day   2005 01 

NVT: Tech Words the Day   2005 01 

REST: Tech Words the Day   2005 01 

Testing for network connectivity in a script   2004 12 

ProFTPd, wu-ftpd, and general ftp security   2004 12 

Why are in-addr.arpa addresses backwards?   2004 12  2005/02/25 15:11 anonymous

Determining clients IP address by service and PID   2004 11 

Inetd environment variables   2004 11 

Notes on Digiboard Terminal Servers TS/8 TS/16   2004 11 

Finally solved FACTS crashing issue   2004 10 

Debugging Facetwin Remote Printing Connections   2004 10 

Using rsync for machine replication?   2004 10 

Setting up a new firewall   2004 10 

 
 
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Switches damaged by UPS?   2004 10 

Setting up Mozilla Roaming Profiles   2004 09 

Dynamic DNS Services Update Scripts   2004 09 

spoofing: Tech Words the Day   2004 08 

Lsof   2003 10 

Cartoons: TCP Client jealousy   2004 08 

New Linux Skills Test Question   2004 07 

Basic DNS: PTR records and why you care   2004 07  2009/11/13 12:44 TonyLawrence

web server behind firewall -->Re 2 webservers behindfirewall? HOW   1997-2004 

why no route to host when it can be pinged?   1997-2004 

simple perl network server   1997-2004 

connectivity tests ping -->Re need command to testinternet is ok   1997-2004 

Unix time, UTC, TAI and all that.   2004 06 

Shameful Internet providers   2004 06 

Disappointed with LDAP   2004 06 

Instant Messaging Worms   2004 06 

Threats on the Lan   2004 05  2005/10/15 07:48 rajasekhar

IP telephony- No training   2004 05 

Stop Windows Messenger Spam   2004 04 

Detailed procedure for installation of VNC on OpenServer   2004 03  2009/04/17 10:10 TonyLawrence

Newbie guide for the net install of SuSe 9.0   2004 01  2007/02/19 01:40 anonymous

Open Source Network Administration   2003 12 

Network Management Techniques   2003 11 

Downloading Fedora with BitTorrent   2003 11 

Newbie guide for the net install of SuSe 8.2   2003 11  2005/02/24 17:10 TonyLawrence

 
 
 
 
arp   2003 10 

Cellular Wireless Access Tips   2003 10 

WINDOWS NETWORKING: Doing It the Samba Way   2003 10 

Tightvnc, Chicken of the VNC   2003 10  2007/06/04 17:48 anonymous

Perl Net::FTP   2003 09  2009/10/12 19:45 TonyLawrence

MacOSX lookupd   2003 09  2005/07/23 15:03 ChrisBurkhardt

Watch your typing   2003 09 

Do as I say! (and not as I do)   2003 08 

Troubleshooting network connections with arp   2003 08 

'arpwatch' for security and administration   2003 08 

Some common Unix network ports on my server and what they mean   2003 08 

Cool Tools: Network View - a network node discovery tool   2003 08 

Linux|Unix Security Cookbook   2003 07 

Telephone Switch Considered Harmful   2003 07 

Using rsync to update laptop   2003 07 

A simple remote site monitor (part two)   2003 07 

A simple remote site monitor (part one)   2003 07 

SME Server Local Networks and VPN's   2003 07 

Xinetd   2003 07 

Printing to a remote printer with a dynamic address   2003 06  2008/07/15 05:29 AnupKatariya

Cell Phone Internet Connections   2003 06  2008/11/05 12:42 g1accessories

Verizon Cell Phone Internet Connections   2003 06 

TCP/IP Tips   2003 06 

Network Neighborhood, Visionfs, Samba Authentication and all that   2003 05 

Start Here- Networking   2003 04 

 
 
 
 
Kermit 95 2.1.3   2003 03 

Securing POP mail access in Mac OS X   2003 03 

Spamassassin on Mac OS X   2003 03  2005/07/08 10:13 TonyLawrence

CUPS print to file - the hard way!   2003 03  2009/10/31 11:12 TonyLawrence

Why Production servers shouldn't have external interfaces   2002 12 

Understanding IPTABLES   2002 11 

GIAC Enterprises Goes Cyber!   2002 10 

Poly (morphic) want a server…or Runaway worm   2002 10 

Sendmail Performance Tuning by Nick Christensen   2002 09 

What is netcat and how do I use it?   2002 09  2009/04/19 18:05 TonyLawrence

Using Netcat for a simple lpr client   2002 09 

Log Serial Port Data to a Specified Logfile   2002 09 

The Future of ideas by Lawrence Lessig   2002 06 

SME Server (E-Smith) Mail Forwarding, Lists, Etc.   2002 06 

TCP/IP Network Administration   2002 05 

SME Server V5 Virtual Domains   2002 05  2009/11/10 23:01 TonyLawrence

Sendmail   2002 04 

Multitech RF550VPN SOHO VPN Router   2002 03 

Setting up Netcat Printers   2002 01 

Network Printing by Todd Radermacher & Mathew Gast   2001 11 

Linux|Unix Performance Tuning and Capacity Planning   2001 11 

PPP and DNS Configuration   2001 11 

Kevin Smith's Netcat   2001 11 

Windows 2000 and RIP   2001 10 

Another Password to Ldap Script   2001 10 

 
 
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SquidGuard   2001 09  2008/12/09 14:13 TonyLawrence

Setting up Apache on Unixware   2001 07 

Netgear PrintServer PS110 and CUPS   2001 06  2007/11/19 21:44 anonymous

Connecting to the Internet   2001 06 

SSH- The Secure Shell   2001 05 

SSH   2001 05  2007/09/06 15:32 TonyLawrence

VPN's and other remote access   2001 04  2009/08/13 11:23 anonymous

Telnetting to a port other than 23   2001 03 

Network Programming with Perl   2001 02 

Monitoring Windows NT with Unix syslog   2001 02 

Netgear PrintServer PS110   2001 02 

New machine had IP address but wouldn't browse   2000 11 

HP 4050N printer wouldn't configure with bootp   2000 11 

Couldn't see Samba shares   2000 11 

Hacking Exposed (Second Edition)   2000 10 

Installing SNMP   2000 09 

Network Printer Port Numbers   2000 09 

Changing System Name   2000 09  2007/03/15 07:47 anonymous

Network+ Exam Guide   2000 08 

Internet Core Protocols   2000 05 

Unixware 7 Incoming PPP   2000 04 

In Search of Clusters   2000 02 

Windows Network Configuration   2000 02 

IPFILTER Firewalls for OSR5   2000 02 

DSL and Cable Modem Security with SSH   2000 02  2008/05/05 15:16 anonymous

 
 
 
 
LDAP Programming   2000 01 

Implementing LDAP   2000 01 

LDAP Basics   2000 01 

Unix passwd to LDAP Script   2000 01 

NETTEST   2000 01 

Cisco IOS Essentials   1999 11 

Unixware 7.1 and the Webtop   1999 06 

Windows NT and Unix Integration   1999 03 

Squid   1999 02 

Review of Netscape Proxy Server   1999 02 

Red Hat Linux as a PPP Server   1999 01 

Winterm 5000 Terminal   1999 01 

Intel Netport Print Server   1999 01  2005/04/14 04:12 anonymous

Setting up a Small Office Network   1998 12 

Multitech MPR200 Proxy Server   1998 12 

OSR5 PPP Setup   1998 11 

Understanding CIDR   1998 11  2008/06/22 07:30 NickPowers

Overview of Visionfs   1998 08 

Networks 101   1998 03 

Installing a Small Office Network   1998 03 

Configuring Network Printers   1998 

Advanced TCP   1998 

Network Wiring Diagram   1998 

SCO OpenServer-The Windows Network Solution   1997  2009/02/28 20:46 anonymous

Unix Network Programming   1997 

 
 
 
 
Managing IP Networks   1997 

Routing Basics   1997 

Why does syslog fill up with #2 open of pid file failed: No such file or directory messages ?   1997-2003 

Why do I have a license for Morning Star PPP and how do I use it (OSR507)?   1997-2003 

How can I restrict who can login with ssh?   1997-2003  2009/07/07 10:24 TonyLawrence

What is port knocking?   1997-2003 

How do I secure services on a SCO system?   1997-2003 

I don't understand all this half/full duplex negotiation stuff   1997-2003  2009/03/07 01:35 TonyLawrence

I see in netstat that processes get stuck in TIME_WAIT   1997-2003  2005/09/04 01:50 BigDumbDinosaur

Why does this 224 route show up in netstat -r? What's this 127 address?   1997-2003 

How can I tell what process has a network port in use?   1997-2003 

How can I force the speed and duplex settings of my NIC (or check what it is now)?   1997-2003 

What can I check if ping doesn't work at all?   1997-2003 

Why doesn't ping stop?   1997-2003 

How do I configure Windows Dial Up Networking (DUNS)?   1997-2003 

Why do I have collisions in netstat -i ?   1997-2003 

I've telnetted to a Linux machine from a SCO console   1997-2003 

What do can't get passwd for local host messages in syslog mean?   1997-2003 

Why do I get portmapper is not responding errors?   1997-2003 

How do I get the latest version of Visionfs for Unixware 7 and OSR5 5.0.4 or greater?   1997-2003 

How do I test a smtp mail connection?   1997-2003  2009/01/05 10:32 aravind

How do I test an imap server?   1997-2003  2009/04/02 11:44 TonyLawrence

How do I test a popd mail connection?   1997-2003 

How do I add a default route?   1997-2003 

Dial in PPP disconnects immediately   1997-2003 

 
 
 
 
Telnet/FTP is very slow to connect   1997-2003 

How to setup resolv.conf for DNS configuration   1997-2003 

What does "WARNING: tcp_deqdata" mean?   1997-2003 

How do I get /etc/issue to print for telnet sessions?   1997-2003 

TCP/IP gives messages like "Notice: TCP SUM: SRC 89270107 SUM 0000D7AD"   1997-2003 

How do I know if I have enough streams buffers for TCP/IP and/or NFS?   1997-2003 

telnet doesn't work properly   1997-2003  2006/12/12 14:53 BigDumbDinosaur

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