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Wednesday, September 30, 2009

DNS Disable.

How you can turnoff the DNS lookups for the local computer. This will reduce a small amount of much-needed bandwidth and makes DNS lookups a little quicker by not resending the same dns client data. There is also the great saving of CPU time and services.exe 3,000 k memory cut down it all helps.
· Go to the Windows Control Panel double click “Administrative Tools.” icon it’s the one with the blue hammer.
· Double click on "Services" icon it’s the one with the two cog wheels
· The service panel will open then double click on the "DNS Client" service to get to the Resolves and caches Domain Name System (DNS) names.
· The DNS Client properties (local computer) panel will open then find the Start-up type pull down set it to "Disabled".
· Click on the "Stop" button once.
· Last click "OK"


DNS Disable dynamic update.

Find the Internet protocol TCP/IP properties click on advanced on the DNS tad “uncheck register this connection adders” Last thing click "OK"
Or you can go into the registry find the key HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\Tcpip\Parameters\Interface and change the value of 1

Disable TCP clients.
This is mostly used for the limitation of concurrent TCP clients but you can set this to zero “0” so there is none. Apply a bind-9 tcp-client sub statement.
Options {
directory “/var/yourname”;
tcp-clients 0;
};
This will now disable the TCP queries and zone transfers for forwarding. But most queries are by default User Datagram Protocol (UDP) based.
If you just wanted to limit the traffic TCP clients to 200 you would neter4 this bind-9 tcp-client sub statement.
Options {
directory “/var/yourname”;
tcp-clients 200;
};

I recommend that only the true DNS servers should have the cache DNS information enabled. But Microsoft enabled this by default but this was done before DNS poisoning, pharming was a big problem with the evil attackers.

If you with to delete all the DNS resolver cache to speed up Web browsing go to the command prompt and then type “ipconfig /flushdns”. This will flush out the old addresses that have been looked up recently.

How to Enabling or Disabling DNS Lookup.

To disabled DNS lookups resolution, - Router (config) #no ip domain-lookup
To enable resolution DNS lookups - Router (config) #ip domain-lookup
Warnings with doing theses changers to the global configuration mode you will loss the DNS requests/responses in the IP packets, prevents a router from doing the name lookups.

For more good information on How to Disable Client-Side DNS Caching please see support.microsoft.com
Posted by baguio_city at 4:10 AM
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DNSSEC Deployment Options

Download BIND 9.3.5-P2-W2

BIND 9.3.5-P2-W2

BIND 9.3 is a previous major release. It is still supported, and bug fixes and security fixes will be made available as minor releases. No new features will be added.

Some of the important features of BIND 9 are: •DNS Security ?DNSSEC (signed zones) ?TSIG (signed DNS requests) •IP version 6 ?Answers DNS queries on IPv6 sockets ?IPv6 resource records (AAAA, DNAME, etc.) ?Experimental IPv6 Resolver Library •DNS Protocol Enhancements ?IXFR, DDNS, Notify, EDNS0 ?Improved standards conformance •Views ?One server process can provide multiple "views" of the DNS namespace, e.g. an "inside" view to certain clients, and an "outside" view to others. •Multiprocessor Support •Improved Portability Architecture

Downloading: BIND 9.3.5-P2-W2 Windows XP/2003/2008 Binary Kit
Click here for books on. DNS-&-BIND

Description The fifth edition covers BIND 9.3.2, the most recent release of the BIND 9 series, as well as BIND 8.4.7. BIND 9.3.2 contains further improvements in security and IPv6 support, and important new features such as internationalized domain names, ENUM (electronic numbering), and SPF (the Sender Policy Framework). Whether you're an administrator involved with DNS on a daily basis or a user who wants to be more informed about the Internet and how it works, you'll find that this book is essential reading.

Description The fourth edition of DNS and BIND covers the new 9.1.0 and 8.2.3 versions of BIND as well as the older 4.9 version. There's also more extensive coverage of NOTIFY, IPv6 forward and reverse mapping, transaction signatures, and the new DNS Security Extensions; and a section on accommodating Windows 2000 clients, servers and Domain Controllers.

Description The DNS & BIND Cookbook presents solutions to the many problems faced by network administrators responsible for a name server. This title is an indispensable companion to DNS & BIND, 4th Edition, the definitive guide to the critical task of name server administration. The cookbook contains dozens of code recipes showing solutions to everyday problems, ranging from simple questions, like, "How do I get BIND?" to more advanced topics like providing name service for IPv6 addresses.

Description DNS on Windows Server 20003 is a special Windows-oriented edition of the classic DNS and BIND, updated to document the many changes to DNS, large and small, found in Windows Server 2003. Veteran O'Reilly authors, Cricket Liu, Matt Larson, and Robbie Allen explain the whole system in terms of the new Windows Server 2003, from starting and stopping a DNS service to establishing an organization's namespace in the global hierarchy.

Description This special Windows-oriented edition of the classic DNS and BIND is a guide to one of the Internet's fundamental building blocks: the distributed host information database responsible for translating names into addresses, routing mail, and many other services. Covers server setup and maintenance along with Windows-specific topics like integration between DNS and Active Directory, conversion from BIND to the Microsoft DNS server, and registry settings.

This Open Source Guide is about DNS and (mostly) BIND 9.x on Linux (Fedora Core), BSD's (FreeBSD, OpenBSD and NetBSD) and Windows (Win 2K, XP, Server 2003). It is meant for newbies, Rocket Scientist wannabees and anyone in between. This Guide was born out of our first attempts a number of years ago at trying to install a much needed DNS service on an early Redhat Linux system. We completed the DNS 'rite of passage' and found it a pretty unedifying and pointless experience.

The Concise Guide to DNS and BIND provides you with the technical depth and expert-level information you need to understand and administer DNS and BIND. Domain Name System (DNS) is a distributed Internet directory service. It is used mainly to translate between domain names and IP addresses, and to control Internet email delivery. Most Internet services rely on DNS to work, and if DNS fails, Web sites cannot be located and email delivery stalls. BIND (Berkeley Internet Name Daemon) is an implementation of the Domain Name System (DNS) protocols.

The BIND 9 DNS Administration Reference Book is based on Internet Systems Consortium's BIND 9 documentation including the Administrator Reference Manual (Bv9ARM). In addition to hundreds of improvements (most integrated upstream) and major reorganization of the original documentation, new content, examples, detailed indexing and more cross-referencing were added. This book is an excellent resource which provides a convenient way to find BIND 9 documentation and to learn DNS basics.

Dru Lavigne's new book is simply the best FreeBSD how-to book out there. This book is well written with specific instruction on how to make things work. Make no mistake about it.....Whether you are a novice or a system administrator, you need this book in your library. Unlike other FreeBSD books out there which basically copy the online handbook, Dru Lavigne compiled literally hundreds of FreeBSD tricks in this new book. You won't be disappointed!

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