RFC1925 – The Twelve Networking Truths

RFC1925 – The Twelve Networking Truths

Pasted below (In part starting on -2- ) Read-All here >>> – rfc 1925 – <<<

2. The Fundamental Truths

(1) It Has To Work.

(2) No matter how hard you push and no matter what the priority,
you can’t increase the speed of light.

(2a) (corollary). No matter how hard you try, you can’t make a
baby in much less than 9 months. Trying to speed this up
*might* make it slower, but it won’t make it happen any
quicker.

(3) With sufficient thrust, pigs fly just fine. However, this is
not necessarily a good idea.
It is hard to be sure where they
are going to land, and it could be dangerous sitting under them
as they fly overhead.

Pigs might fly

(4) Some things in life can never be fully appreciated nor
understood unless experienced firsthand. Some things in
networking can never be fully understood by someone who neither
builds commercial networking equipment nor runs an operational
network.

Approaches, perspectives & design

Scientific Vs Engineering
The scientific approach to solving problems say, “We need to understand and research MORE!”
The engineering approach to solving problems say, “Use what we know and understand NOW!”

THE INTERNET
The Internet was designed for unforeseen use. It was not designed to be perfect at what-ever its use was, .. at the time it was created. There was a choice NOT to apply perfect control. (Unlike Telecommunications systems with $$$-billing-$$$ as its core centralised feature)

fibre optic cabling http://www.nbn.gov.au/
http://www.nbn.gov.au/content/what-national-broadband-network

Networking (Connecting Linux-boxes to Micro$oft-boxes)

Samba – (And some quoted text)
The following series of quoted text are from url >>> http://www.oregontechsupport.com/articles/samba.php <<<

#1: – Microsoft came along and decided, rather than pay $20 per seat to license this technology, to reimplement DCE/RPC themselves as MS-RPC. (MY-GUESS – Approximately, this might have happened around 1997, .. but it could have been 1987, or even 1983 – IF I ever find the answer to that question I will update this little post)

#2: – While often tedious, at least the way has been generously littered with occurrences of clapping hand to forehead and muttering ‘crikey, what are they *thinking*?!’”

SOME KNOWLEDGE -/- HISTORY – (Is required)
#3: – With all things being what they were, Microsoft kept their implementation of NBT (mostly) secret. If you didn’t have a Windows machine, you were out of luck sharing files or printers with other Windows machines. Thus, the need for Samba — a way to mix Windows and Linux machines together without requiring a separate Windows server — was born.

#4: – What Exactly is Samba?
Samba is essentially a TCP/IP file and print server for Microsoft Windows clients. In fact, it can support any SMB/CIFS-enabled client. One of Samba’s big strengths is that you can use it to blend your mix of Windows and Linux machines together without requiring a separate Windows server. Samba includes support for Active Directory, unicode, new authentication and filename mangling systems, printing support, trust relationships, LDAP integration and loadable RPC modules.

I just want to connect Linux-boxes to Micro$oft-boxes, – (But that will require LOTs of effort) – hmmm – so I have produced this little post about what I have found so far, .. after approx 1 to 2 hours attempt(s) and failed configuration of this idea.

PREVIOUS POST: – Common Internet File System

GOOGLED – Windows 1.0 Timeline

THE (GUI) M$ HISTORY? – Starts approx 1983 – The Windows 1.0 product box featured the operating system’s new, tiled windows and graphical user interface (GUI).

THE DOS M$ HISTORY? – Starts approx { Insert date here _? = April 1980 according to Wikipedia }
GOOGLED – DOS Timeline

VISITED: – http://en.wikipedia.org/wiki/Timeline_of_x86_DOS_operating_systems

IF ONLY – (The OS most consumers use today (2010), .. could have been CP/M) – In 1973, Gary Kildall writes a simple operating system for Intel 8080-based computers which he calls CP/M.

Samba and Bugs – (Screen-Dump below; – taken from >>> http://samba.org/samba/docs/Samba24Hc13.pdf <<< )

Analyzing Problems

YEY – 9:15pm – Got Ubuntu 9.04 connected to Windows XP-Share – USED; The ubuntu menu ->>> Places | Connect to Server <<< – (AND; Input the appropriate configuration details, such as host-name, workgroup, share-name, account-ID -/- password) – happy now 🙂

MORE ? >>> 9:55pm – Can access the Window box from Ubuntu laptop, .. Getting XP to access ubuntu may require samba configuation, .. OR maybe terminal services might work with some minimal configuration.

THIS-SITE; – (Mentioned above) – actually provides a “nice simple” installation procedure >>> http://www.oregontechsupport.com/articles/samba.php <<<

Error code: 0x80070035 The network path was not found

We have a problem Huston! – Windows 7, will NOT connect to Server 2008 share

HERE; Is a – (Basic – setup / configure a LAN) – simple check-list that works with XP-Pro systems in a ‘work-group’

OTHER MISCELLANEOUS ITEMs; – Windows 7 is RC7100, and Server 2008 = Trial-Version – BUT that should NOT be having any bearing on this problem.

It is a strange problem, as the normal trouble shooting procedures have been completed, and firewall / configuration turned OFF, on both machines. It was working yesterday – BEFORE installing ZA, and installed a swag of Micro$oft updates – so once again, the problem can NOT be pin-pointed to one particular update / software install.

The Server-2008 – can access the laptop, and so I can work-around this issue, but it would be REALLY NICE, if I could resolve the problem. BUT it might be all for nothing, IF I have to RE-Install Windows-7 all over again – cause it IS going to expire on 1st  March 2010 (About 7 days from NOW)

GOOGLED: – “Error Code: 0x80070035” – This can be overly complicated by misinformation, but I believe that I have collected some RELEVANT facts / checks to perform when this problem arises.

#1: – http://www.techsupportforum.com/networking-forum/networking-support/175665-solved-error-code-0x80070035-network-path-not-found.html

SOLUTION – BY; johnwill – Manager, Networking Forums – S.E. Pennsylvania, US – OS: Windows 7, XP-Pro, Vista, Linux

[THIS; Seems to all make sense to me – so I have pasted below the relevant BITs, which may be useful when this problem occurs again later]

[VERBATIM-START]

Re: error code: 0x80070035 network path not found
Turn off any firewalls for debugging. If the firewall is the problem, you’ll have to configure it to allow access to “trusted zone” addresses. Note that some firewalls must be completely uninstalled to stop them from affecting your networking.

PING each computer by IP address, and if successful, PING by name. You can obtain the IP address of a computer by opening a command prompt (DOS window) and typing IPCONFIG. This should work for any Windows version. A failure here needs to be corrected before you go any farther.

Check your Services are Started on all PCs: Workstation, DHCP Client, DNS Client, Server, TCP/IP Netbios helper, Computer Browser.

All computers should be in the same workgroup for computer browsing to function properly. File & Print Sharing has to be enabled on any computer you wish to share files or printers from. You also need to actually share the resource in question from My Computer, right click on the drive/printer/folder, and select sharing.

If you encounter difficulties accessing computers that are visible in Network Neighborhood, make sure the computer being accessed has an account with the same name/password as the system connecting to it uses to login.

While the default NetBIOS setting is correct for normal network configurations, it’s possible for it to be altered, and it costs nothing to make sure it’s correct. NETBIOS over TCP/IP must be enabled for normal network browsing.

[VERBATIM – END]

[THAT; Makes a nice checklist to work through][Follow the link above, IF you need to read more about this particular issue – OR register on the http://www.techsupportforum.com/ – to post a particular OS/hardware senario]

Computer basics project

Needing to force myself to finish a project started a long time ago, and this blog is like a little resource / research project to assemble bits and pieces, and THEN select from here, .. the best bits.

PERMA-LINK; Computer basics project – http://grd.net.au/blog/?cat=3

AND; since adding the ‘Mini-Blog‘ today, – this “Category” is not displayed in the main body of the  blog. The devleloper of wp-widget “sidepost” url is HERE

Windows 7 installation guides

LINKs: (That provide information about what to expect during Windows 7  installtion, AND; the ISO / USB installaton method on Lifehacker.com)

http://www.computerworld.com/s/article/9139824/Windows_7_installation_how_to_step_by_step?taxonomyId=125&pageNumber=1

http://lifehacker.com/5423747/windows-7-usb-download-tool-lets-you-install-windows-from-a-thumb-drive

AND; (One more link that MIGHT be required, useful, or handy)

http://wudt.codeplex.com/ – The Windows 7 USB/DVD Download tool allows you to create a copy of your Windows 7 ISO file on a USB flash drive or a DVD. To create a bootable DVD or USB flash drive, download the ISO file and then run the Windows 7 USB/DVD Download tool. Once this is done, you can install Windows 7 directly from the USB flash drive or DVD.

unprivileged scripts

To protect users’ private information; – Browser Security Issue (Mozilla)

SENARIO: Using the online TAFE ‘learning-tool’ called “Desknow” – And attemptted to copy two lines of text from the email-message being constructed, ready to send.

NOTE; This only happens within the ‘Online-TAFE-environment’ called Desknow. (Not normal browser activity)

Read More Here >> unprivileged scripts cannot invoke the Cut, Copy, and Paste <<< The Mozilla development provides indepth details as to what and why I have received this message.

Unprivileged scripts cannot access Cut/Copy/Paste programatically for security reasons. Click OK to see a technical note at mozilla.org which shows you how to allow a script to access the clipboard.