20-10-2012, 03:50 PM
NETWORK SECURITY
NETWORK SECURITY-DOS.docx (Size: 24.72 KB / Downloads: 24)
ABSTRACT
Most computes criminals and hackers strike not because of their knowledge but they bloom because of the ignorance the users, system administrator on using their systems and servers and computer networks.
1.There are open ports on which hackers may attack.
2.There are dangerous kinds of attacks on the servers and administrators
3.There are mechanisms of securing window NT server administrator passwords.
This project is based on practical techniques, tacts, of attacking and the concept and mechanism of their attacks.
Thus for stopping the net criminals from intruding into the systems, the system administrator should know the drawbacks, loopholes of the OS, internet, and networking.
These papers give the details of different kinds of attacks that a hacker may onslaught on the administrator. Concepts and techniques of attacks like DOS attack, controlling and disconnecting remote modems,Trojan attasks, mail bombings etc.
.Emphasis is given on the open ports on which the hacker usually attack
ATTACKS ON THE SERVER.
DOS ATTACKS
Denial Of Service attacks( DOS attacks) are very common hacking attack now. It is defined as : An attack on the target system by a malicious attacker to render the normal services offered by it to legitimate users as unavailable or disable services..It involves the launching of an attack that will make the services offred by the target system or normal services offered by the internet or a network system to a legitimate user.
DOS attack can be described as one in which the target system’s memory is is so much clogged that it cannot serve legal users.Or system target is sent so much data files that,which can’t be handled by it and it crashes or reboot.
KINDS OF DOS ATTACK
PING OF DEATH:
Ping is a part of the ICMP protocol i.e. the internet control message Protocol.This is used to troubleshoot the TCP\IP network.
Ping is a command that sends out a datagram to the specified host. This specified host if alive i.e. turned on ,sends out reply or echoes of the same datagram. If the datagram that returns to our computer has the same datagram that was sent, then it means that the host is alive. Therefore ping is basically a command that allows to check if a host is alive or not. It can also be used to determine the amount of time taken for a datagram to reach the host.
Actually it is so deadly so that it can be used to ping a hostname perpetually, that may cause the host to crash. When a host receives a ping signal, it allocates some of its resources to to attend to or to echo backthe datagram. Now, if a host is pinged perpetually, then a time will come when all resources of the host are used and the host either hangs or restarts.
Due to ping’s deadly nature,most shall account ISP hide the ping utility.
NETWORK SECURITY-DOS.docx (Size: 24.72 KB / Downloads: 24)
ABSTRACT
Most computes criminals and hackers strike not because of their knowledge but they bloom because of the ignorance the users, system administrator on using their systems and servers and computer networks.
1.There are open ports on which hackers may attack.
2.There are dangerous kinds of attacks on the servers and administrators
3.There are mechanisms of securing window NT server administrator passwords.
This project is based on practical techniques, tacts, of attacking and the concept and mechanism of their attacks.
Thus for stopping the net criminals from intruding into the systems, the system administrator should know the drawbacks, loopholes of the OS, internet, and networking.
These papers give the details of different kinds of attacks that a hacker may onslaught on the administrator. Concepts and techniques of attacks like DOS attack, controlling and disconnecting remote modems,Trojan attasks, mail bombings etc.
.Emphasis is given on the open ports on which the hacker usually attack
ATTACKS ON THE SERVER.
DOS ATTACKS
Denial Of Service attacks( DOS attacks) are very common hacking attack now. It is defined as : An attack on the target system by a malicious attacker to render the normal services offered by it to legitimate users as unavailable or disable services..It involves the launching of an attack that will make the services offred by the target system or normal services offered by the internet or a network system to a legitimate user.
DOS attack can be described as one in which the target system’s memory is is so much clogged that it cannot serve legal users.Or system target is sent so much data files that,which can’t be handled by it and it crashes or reboot.
KINDS OF DOS ATTACK
PING OF DEATH:
Ping is a part of the ICMP protocol i.e. the internet control message Protocol.This is used to troubleshoot the TCP\IP network.
Ping is a command that sends out a datagram to the specified host. This specified host if alive i.e. turned on ,sends out reply or echoes of the same datagram. If the datagram that returns to our computer has the same datagram that was sent, then it means that the host is alive. Therefore ping is basically a command that allows to check if a host is alive or not. It can also be used to determine the amount of time taken for a datagram to reach the host.
Actually it is so deadly so that it can be used to ping a hostname perpetually, that may cause the host to crash. When a host receives a ping signal, it allocates some of its resources to to attend to or to echo backthe datagram. Now, if a host is pinged perpetually, then a time will come when all resources of the host are used and the host either hangs or restarts.
Due to ping’s deadly nature,most shall account ISP hide the ping utility.