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    • TCP Sequence Prediction Attack

      TCP Sequence Prediction Attack

      A TCP sequence prediction attack is an attempt to hijack an existing TCP session by injecting packets which pretend to come from one computer involved in the TCP session. The TCP Sequence Prediction Attack TCP is a reliable connection-oriented layer 4 (Transport Layer) protocol. Packet transfer between hosts is accomplished by the layers below layer

    • RADIUS (Remote Authentication Dial in User Service)

      RADIUS (Remote Authentication Dial in User Service)

      RADIUS (Remote Authentication Dial In User Service), defined in RFC 2865, is a protocol for remote user authentication and accounting. RADIUS enables centralized management of authentication data, such as usernames and passwords. When a user attempts to login to a RADIUS client, such as a router, the router send the authentication request to the RADIUS

    • Port Forwarding

      Port Forwarding

      Port forwarding, also known as tunneling, is basically forwarding a network port from one node to the other. This forwarding technique allows an outside user to access a certain port (in a LAN) through a NAT (network address translation) enabled router. Advantages of Port Forwarding Port forwarding basically allows an outside computer to connect to

    • Port Scanner

      Port Scanner

      A port scanner is a program which attempts to connect to a list or range of TCP (Transmission Control Protocol) or UDP (User Datagram Protocol) ports on a list or range of IP addresses. Port scanners are used for network mapping and for network security assessments. The first decision to make when running a port

    • Firewalls

      Firewalls

      A firewall is a software component that restricts unauthorized inward network access. It allows outward information flow. It is set up to control traffic flow between two networks by configured permissions like Allow, Deny, Block, Encrypt, etc. It is normally employed to avoid illegal access to personal computers or corporate networks from external unsafe entities

    • Packet Sniffers

      Packet Sniffers

      Packet sniffing is listening (with software) to the raw network device for interesting packets. When the software sees a packet that fits certain criteria, it logs it to a file. The most common criterion for an interesting packet is one that contains words like “login” or “password.” To packet sniff, obtain or code a packet

    • Packet Fragmentation

      Packet Fragmentation

      Every packet based network has an MTU (Maximum Transmission Unit) size. The MTU is the size of the largest packet that that network can transmit. Packets larger than the allowable MTU must be divided into smaller packets or fragments to enable them to traverse the network. Network Standard MTU Ethernet 1500 Token Ring 4096 Packet

    • Responding to Network Attacks and Security Incidents

      Responding to Network Attacks and Security Incidents

      Network Attacks Review A network attack occurs when an attacker or hacker uses certain methods or technologies to maliciously attempt to compromise the security of a network. Hackers attack corporate networks to use data for financial gain or for industrial espionage, to illegally use user accounts and privileges, to run code to damage and corrupt

    • LDAP (Lightweight Directory Access Protocol)

      LDAP (Lightweight Directory Access Protocol)

      LDAP (Lightweight Directory Access Protocol) is a protocol for communications between LDAP servers and LDAP clients. LDAP servers store "directories" which are access by LDAP clients. LDAP is called lightweight because it is a smaller and easier protocol which was derived from the X.500 DAP (Directory Access Protocol) defined in the OSI network protocol stack.

    • What Are the Effects of Computer Hacking?

      What Are the Effects of Computer Hacking?

      Hacking as a Destructive Tool The common stance on hacking with the average person is that it is morally wrong. There have been several instances where hacking has proven to have caused problems. Hacking can create a variety of damages to people, groups and systems of broad spectrum. Negative Hacking Interactions: Identity Theft – Some hackers can

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