Rays Systems

What is ARP? What is ARP Cache Poisoning? Address Resolution Protocol (ARP) is a protocol for mapping an Internet Protocol address (IP address) to a physical machine address that is recognized in the local network. For example, in IP Version 4, the most common level of IP in use today, an address is 32 bits long. In an Ethernet local area network, however, addresses for attached devices are 48 bits long. (The physical machine address is also known as a Media Access Control or MAC address.) A table, usually called the ARP cache, is used to maintain a correlation between each MAC address and its corresponding IP address. ARP provides the protocol rules for making this correlation and providing address conversion in both directions. How ARP Works When an incoming packet destined for a host machine on a particular local area network arrives at a gateway, the gateway asks the ARP program to find a physical host or MAC address that matches the IP address. The ARP program looks in the ARP cac...

Tips for the Interview of Network Engineer or Network Technician NC Universal Naming Convention \\servername\shared name (It is used to access the shared folder) MAC Med ia Access Control PDC Primary Domain Controllers BDC Backup Domain Controllers SMP Symmetric Multi Processors AMP Asymmetric Multi Processing EFS Encrypted File System FAT File Allocation Table HCL Hardware Compatibility List IIS Internet Information Service LSA Local Security Authority MMC Microsoft Management Console OU Organizational Unit RAS Remote Access Service RDP Remote Desktop Protocol (used for Terminal Services) RRAS Routing and Remote Access Service SID Security Identifier WINS Windows Internet Name Service GUID Globally Unique identifier IAS Internet Authentication Service UPN User Principle Name (Username@domainname.com) BIOS Basic Input Output System Net BIOS Network Basic Input/Output System ARP Address Resolution Protocol DVD Digital Video Disk GPO Group Policy Object (LGPO Local Group Policy Object) I...

Click and Watch Video http://www.tiktube.com/?video=137 Step 1. Configure IP Address of Interfaces Step2. Setting Up Mikrotik as a DNS Server Step3. Setting up Mikrotik as a DHCP Server Step4. Creating IP-Pools for PPOE and also for Other Network Step5. Setting up PPOE Server Step6. Creat PPOE SErver Profiles Step7. Setting Firewall Rules Nat Rule is Must Step8. Creat Default Route For Internet

Some of the features you can use when you choose NTFS are: * Active Directory, which you can use to view and control network resources easily. * Domains, which are part of Active Directory, and which you can use to fine-tune security options while keeping administration simple. Domain controllers require NTFS. * File encryption, which greatly enhances security. * Permissions that can be set on individual files rather than just folders. * Sparse files. These are very large files created by applications in such a way that only limited disk space is needed. That is, NTFS allocates disk space only to the portions of a file that are written to. * Remote Storage, which provides an extension to your disk space by making removable media such as tapes more accessible. * Recovery logging of disk activities, which helps you restore information quickly in the event of power failure or other system problems. * Disk quotas, which you can use to monitor and control the amount of disk space used by in...

How to install DHCP? We can install DHCP by two ways 1) While installing Operating System While installing Operating System, It asks at Network Settings whether u want Typical settings or Custom Settings Select Custom SettingsSelect Network Servicesclick on Details Select DHCPclick on OK 2) Independently Programs Settings Control Panel Add/Remove Programs  Add/Remove Windows Components Select the Network ServicesClick on properties Select DHCP OK (During the installation it asks for CD) Note: When you have installed DHCP a icon will appear in Administrative Tools (DHCP)

Msn Messenger & Yahoo, Msn Messenger & Yahoo For All Thost Yahoo Account Holders That Whish To Use A Yahoo Account With Msn Messenger & .Net Passport Service An Introduction In this tutorial you will learn how to step up your Yahoo Accout with. net passport to allow u to login to msn messenger ang any .net passport supported website What you will need * A Yahoo Account - as thease are only obtainable via invitation i will assume you alredy have one . * Msn Messenger / Windows Messenger - used to verify your Yahoo account. Once you have downloaded / obtained all of thease you are ready to continue. 1. log in to your Yahoo account via - http://Yahoo.com once you are loged in minimize this internet browser window ( convenient or later on ) 2. load up msn messenger and cansel any automatic signe in atempt so that you have it redy to signed in with your Yahoo account later on . 2. you will need to visit the Microsoft .Net Passport website - http://www.passport.net 3. now you wil...

Tired Of Reinstalling Windows My Suggestions For A Better And Easier Computing: -> First partition ur HDD as follows. C: (primary, bootable) 10GB, D: (ur choice), E: (10 GB) -> Next install 2 OSs, it can be XP,XP or XP,9X. One OS in C: and other E:Let OS in C:\ be called "TRASH" and that in E:\ be called "GOOD" -> Boot into GOOD OS. Install all the important software (image viewer, winamp, winrar, acrobat, ms-office etc) in E:\program files\. Tweak all you settings, Install all the latest drivers, AV, service packs, patches etc and do the same for TRASH if you want! ALSO INSTALL THE IMAGING SOFTWARE. -> Now boot to TRASH OS and move the "E:\Documents and Settings" to D:\ and change the default Desktop folder and My Documents folder to d:\doc & settings of TRASH OS. (right click on My Doc, Properties. There just change E: to D:\ or manually "MOVE") for changing desktop u need a tweak program (I use X-Setup, fast and free) NOW INS...

Are you having boot up problems and would like to know what it going on behind that Windows Loading Logo? To find out, you can disable the splash screen by making a small change to the Boot.ini file. Follow these steps (carefully!): 1. Open the "System Properties" dialog box ( Settings - Control Panel - System) 2. On the Advanced tab, click the Settings button in the "Startup And Recovery" section. 3. In the "Startup And Recovery" dialog box, select the Edit button in the "System Startup" section. 4. The Boot.ini file will open in Notepad; locate the line that ends with the /fastdetect switch. 5. Position your cursor to the right after the parameter, press the spacebar, and add the /SOS switch. 6. Save the Boot.ini file, and close Notepad. 7. Click Cancel to close both the "Startup And Recovery" dialog box and the "System Properties" dialog box. 8. Restart the computer to see the effect. Once the computer restarts you will not...

How to recover MOST of scratched CD data discs I learn an old thecnique to how to recover damaged or scratched diskswith some lost of data. In this case i have one borrowed game - MAX PAYNE 2with a chunck of 4 mb lost with a scratch in CD1 Install. Here we cover somespecial thecniques of how to create a full working CD from the scratched one. First some tools will be needed: 1. Alcohol 120%2. UltraISO3. Windows XP/2000 (not tested on 95/98/me)3. Small piece of cotton4. Dry cleaner paper5. Finally, oil for cooking. First step - preparing the CD Get the cotton and drop some water, start cleaning vertically the surface of CD.Do it 3 times and dry the water with a piece of dry cleaner paper. With a new pieceof cotton, drop some oil for cooking and start to wet the surface like you arewashing the CD with the oil. Dry carefully now. Some particles of oil will stay on themicrosurface of the scrath. It's okay. Seems the oil helps the laser of the CD/DVD driverto read the surface again. Sur...