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Ospf routing protocol - Microsoft Windows XP Professional With Servise Pack 2 (e8503040) for PC

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Open Shortest Path First (OSPF) routing protocol is a Link State protocol based on cost rather than hops or ticks (i.e. it is not a vector based routing protocol). As with RIPv2 different sized subnet masks can be used within the same network thereby allowing more efficient utilisation of available address space. Also, OSPF supports unnumbered point to point links and equal cost multipath (or load balancing for up to 6 paths; meaning balancing the distribution of IP datagrams down parallel routes to the same destination router using a round robin or a direct addressing option).

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Posted on Dec 13, 2008

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VPN in Microsoft Server 2003


The full form of VPN is Virtual Private Network. VPN gives extremely secure connections between private networks linked through the Internet. It allows remote computers to act as though they were on the same secure, local network. Allows you to be at home and access your company's computers in the same way as if you were sitting at work.

Almost impossible for someone to tap or interfere with data in the VPN tunnel. If you have VPN client software on a laptop, you can connect to your company from anywhere in the world. VPN goes between a computer and a network (client-to-server), or a LAN and a network using two routers (server-to-server). Each end of the connection is a VPN "endpoint", the connection between them is a "VPN tunnel".

When one end is a client, it means that computer is running VPN client software. You can use a virtual private network (VPN) to connect components to one network by using another network. VPN do this by "tunneling" through the Internet or another public network. With a VPN, connections across the public network can transfer data by using the routing infrastructure of the Internet, but to the user, the data seems to travel over a dedicated private link.

A VPN gives you the benefit of a dial-up connection to a dial-up server, plus the flexibility of an Internet connection. Using an Internet connection you can connect to resources all over the world. If you have a high-speed Internet connection at your computer and at your office, you can communicate with your office at full Internet speed. This is much faster than any dial-up connection that uses an analog modem.

VPNs use authenticated links to make sure that only authorized users can connect to your network, and they use encryption to make sure that others cannot intercept and cannot use data over the Internet. A Tunneling Protocol is a technology that helps make the transfer of information over the Internet more secure from one computer to another.

VPN technology also permits a corporation to connect to its branch offices or to other companies over a public network, such as the Internet, while helping to maintain secure communications. The VPN connection across the Internet logically operates as a dedicated wide area network (WAN) link.

VPN in Windows 2003 Server: You need a high speed Internet connection to configure and run VPN server. Two individual lan card must be present in a single system where you want to configure a VPN Server. The lan cards should ping each other. Also need a User which's Dial in allow access should be enable. Microsoft 2003 server two tunnelling protocols for a secure VPN connection, one is PPTP (Point-to-Point Tunnelling Protocol) which Provides data encryption using Microsoft Point-to-Point Encryption. The other is L2TP (Layer Two Tunnelling Protocol) which Provides data encryption, authentication, and integrity using IPSec.

Steps to create VPN Server in 2003 Server: At first I go to Start and point to Administrative Tools, then click Routing and Remote Access. Then I click the server icon that matches the local server name in the left panel of the console. If the Routing and Remote Access service was previously turn on, you may want to reconfigure the server.

To reconfigure the server Right-click the server object, and then click Disable Routing and Remote Access. Click yes to continue when you are prompted with an informational message. Then Right-click the server icon and then click configure and Enable Routing and Remote Access to start the Routing and Remote Access Server Setup Wizard. After that click Remote access (dial-up or VPN) to turn on remote computers to dial in or connect to this network through the Internet. Then I have Click to select VPN. In the VPN Connection window I click the network interface (Lan) which is connected to the Internet and go the IP Address Assignment window, then I click Automatically because there was present a DHCP server in network. However, if DHCP is not available, you must specify a range of static addresses.

If you use from a specified range of addresses, open the Address Range Assignment dialog box and Type the first IP address in the range of addresses that you want to use in the Start IP address box. Type the last IP address in the range in the End IP address box. Windows calculates the number of addresses automatically. After that I have accept the default setting of No, use Routing and Remote Access to authenticate connection request and finally Click Finish to turn on the Routing and Remote Access service and to configure the server as a Remote Access server.
For the remote access server to forward traffic properly inside your network, you must configure it as a router with either static routes or routing protocols, so that all of the locations in the intranet are reachable from the remote access server. It also need for security purpose.<SPAN style="LINE-HEIGHT: 115%; FONT-FAMILY: 'Verdana','sans-serif

on Mar 22, 2011 | Microsoft Windows Server 2003 Enterprise...

1 Answer

CAnnot go internet automatically


Hi,

If you are connection to the internet is wireless try this:

Go to the properties on your wireless adapter. In the "This connection uses the following items" box, unchecked the
internet protocol version6 (tcp/ipv6) box. Most routers don't support this protocol. Unless you have a N router. Then restart your computer. That how I fixed mine.

Hope this helps.

May 28, 2011 | Microsoft Windows XP Professional

1 Answer

There is an error in connect...........


If the error in connecting to the internet or to a LAN is prevalent with all network adapters, reset the TCP/IP Protocol stack byrunning the following command from the command prompt window:
1. Go to start menu and click on run.
2.Type in cmd.exe and press enter.
3.In the command prompt window,type in the command:
netsh int ip reset C:\connlogreset.log

The command will reset the TCP/IP protocol stack to it's defaults, and the reset data will be logged in the text document connlogreset.log.

If the above fails, disable any protocols that are not needed in the connection, e.g. SLIP(Serial Line Internet Protocol for Linux) as it's only used to connect to Linux servers in a LAN.
If using a broadband modem, disable NDIS driver wrapper from the GSM broadband client software provided with the modem, and update the software if possible.

Jan 01, 2011 | Operating Systems

1 Answer

OSPF flucutated in the corporate LAN network when introduced a new L2 switch


it probably did a re-election thats all due to the STP state change.

Sep 15, 2009 | Cisco IOS

1 Answer

How to enable ICS service


Are you running Windows Server 2000?

If so - this is a well known problem with 2000.

When you have a server running Dynamic Host Configuration Protocol (DHCP) or Dynamic DNS (DDNS), the Internet Connection Sharing (ICS) service may not function correctly or may cause some services to stop working. In addition, various error messages may be displayed.

To resolve this issue, do not run the ICS service on a DHCP or DDNS server. NAT (which is installed using routing protocols in the Routing and Remote Access Service (RRAS) snap-in) works correctly if you do not enable the DNS Proxy service or the DHCP allocator.

Mar 02, 2009 | Microsoft Windows Server Standard 2003 for...

2 Answers

You might not have permission to use this network resource.


To solve the problem you must add: "NWLink IPXSPXNetBIOS Compatible Transport
>Protocol" to the “Network Properties” list on each computer of the network.
>
>The error message is misleading in that it has nothing to do with permissions or
>servers or logging on as administrator.
>
>Note: To add "NWLink IPXSPXNetBIOS Compatible Transport Protocol" open your Network
>Connections as explained below:
>
>1 - Go to Control Panel, and select "Network Connections";
>
>2 – Right-click with your mouse your Network Connection and select “Properties";
>
>3 - On the "Connection Properties" screen, select the "Install" tab;
>
> 4 - On the "Select networking Component" screen select "Protocol" double-click the
>Add..." Tab;
>
>5 - On the "Select Network Protocol" screen, select "NWLink IPXSPXNetBIOS Compatible
> Transport Protocol" and click the "OK" tab to install the protocol.
>
>The steps above have to be repeated on every computer present in the Network.

goodluck

Feb 27, 2009 | Microsoft Windows XP Professional

1 Answer

2003 problem


Hi It depend what you want to do.Both course is good. CCNA: The Cisco CCNA network associate certification validates the ability to install, configure, operate, and troubleshoot medium-size routed and switched networks, including implementation and verification of connections to remote sites in a WAN. This new curriculum includes basic mitigation of security threats, introduction to wireless networking concepts and terminology, and performance-based skills. This new curriculum also includes (but is not limited to) the use of these protocols: IP, Enhanced Interior Gateway Routing Protocol (EIGRP), Serial Line Interface Protocol Frame Relay, Routing Information Protocol Version 2 (RIPv2),VLANs, Ethernet, access control lists (ACLs) More information about CCNA: http://cisco.com/web/learning/le3/le2/le0/le9/learning_certification_type_home.html MSCE: Read this will help you decide. http://www.microsoft.com/learning/mcp/mcse/windows2003/default.mspx Good Luck.

Sep 15, 2007 | Microsoft Windows Server Standard 2003 for...

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