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Saturday, July 30, 2011

Some Useful Tools

Some Useful Tools

Following are the some use full tool we should know for troubleshoting network and active directory related problems

1.      IPconfig.exe :- It use for view and manage network configuration. It displays all current TCP/IP network configuration values and refreshes Dynamic Host Configuration Protocol DHCP and Domain Name System DNS settings
2.      ping.exe:- utility used to test the reachability of a host on network to Verify network connectivity.
3.      Netdiag.exe :- Netdiag.exe performs a series of tests to determine the state and functionality of your network client computer. It Check end-to-end network connectivity and distributed services functions.
4.      Pathping.exe :-  Trace a route from source to destination on a network, show the number of hops, and show packet loss.
5.      DCdiag.exe :- Analyze the stare of domain controller in a forest or enterprise.
6.      Dsastate.exe :- Compare directory information on domain controllers and detect differences.
7.      Netdom.exe :- Allow batch management of trusts, joining computers to domains and verifying trusts and secure channels.
8.      Net :- Perform common tasts on network services, includeing stopping , starting and connecting to network resources.
9.      ADSI Edit:- View , Modify and set ACL (access control lists) on objects in the directory.
10.  Active Directory Domains and Trusts :- Administer domain trusts, add user principle name suffixes, and change the domain mode.
11.  Repadmin.exe :- verify replication consistency between replication partners, monitor replication status, display replication metadata, and force replication events and  topology recalculation.
12.  Active Directory Sites and services:- Administer the replication of directory data
13.  Active Directory Users and Computers:- Administer and publish information in the directory.
14.  DNS snap-in:- Manage DNS
15.  Event Viewer:- Monitor events recorded in event log..
16.  Ldp.exe :- Perform Lightweight Directory Access Protocol (LDAP) operations against Active Directroy.
17.  Linkd.exe :- Create , delete, update, and view the links that are stored in junction Points.
18.  Nltest.exe :- verify that the locator and secure channel are functioning.
19.  Ntdsutil.exe :- manage active directory fsmo role and meta data
20.  regedit.exe :- view and modify registry settings.
21.  secedit.ese :- mange group policy setting
22.  Services Snap-in :- Start, stop , pause, or resume services on local or remote computer and configure startup and recovery option for each services.
23.  Setspn.exe :- Manage service principal Names.
24.  w32tm :- Manage windows time service.

Wednesday, July 27, 2011

Admin should know this information


If you are who taken care of computer or Network system then you have to know following things for your network system.
  1. How many hard drives do you have?
  2. what size is each hard drive?
  3. if you have more than one hard drive , which is the primary one?
  4. what kind of hard drive do you have?
  5. how much RAM do you have? Make , Type (SD, DDR, DDR2...)and speed?
  6. do you have SCSI adapter? If So, who made it and what model is it?
  7. do you have RAID system? If So, Who made it and what model is it?
  8. what type of mouse do you have
  9. how many buttons does your mouse have
  10. if you have a serial mouse, what com port is it connected to?
  11. what is the make and model of your video card ? how much video RAM do you have?
  12. what kind of monitor do you have (make and model)?
  13. will you be connected to a network ? If So what will be the following:
  • your IP Address?
  • Your nemask?
  • Your gateway address?
  • Your domain name server’s IP address?
  • Your domain name?
  • Your hostname?
  • Your types of network card (make and model)
  • Your number of card
 14. System is connected to other system, Switch, Hub, or Router?
  • If it connected to system then what IP address it has? why system is connected to other system (Role of other system Firewall, Router, NAT)
  • If it connected to Switch. Then how many port it has, make and model. It is L2 or L3 Switch. what the IP address of switch, is it switch has configure VLAN? if yes then how many VLAN , subnet for each VLAN. 
  • If it connected to Router, then what is the IP address of Router, make and model. how many interfaces it has. IP address infromation of each interface, how the Router is configure, static or Dinymic, is it filtering (Firewall) are enabled ? if yes then what port and network are open. and how the ACL are set?