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Nmap Experiment

Nmap Experiment. Outline. Introduction NMAP - NMAP advantages - NMAP capability of support NMAP Install - Install of under Windows - Install of under Linux NMAP Experiment - Use NMAP - Parameter ： - sT - Parameter ： - sS Conclusions. Introduction. A Port Scanner software on unix

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Nmap Experiment

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  1. NmapExperiment

  2. Outline Introduction NMAP - NMAP advantages- NMAP capability of support NMAP Install- Install of under Windows- Install of under Linux NMAPExperiment- Use NMAP- Parameter：-sT- Parameter：-sS Conclusions

  3. Introduction A Port Scanner software on unix By NMAP scan- Quickly know remote host executive services- Guess remote host’s Operation System & Version- Subnet scanning =>To detect the subnet on which hosts and each of detection of its services

  4. Nmap pros & function Nmapadvantages - Support scanning of variety protocols- Support most of existing system- Operate interface simply- Simple instructions , powerful functions- Free software Nmapfunction - TCP SYN scanning- TCP ftp proxy scanning- ICMP scanning- TCP ping scanning

  5. TCP Flag Definition

  6. Three-way handshake Connect Disconnect Client Server Client Server SYN FIN SYN/ACK ACK/FIN ACK ACK Connection Established Connection Closed

  7. NmapInstall

  8. Windows http://insecure.org

  9. Linux Fedora : (Root Permission) yum install Nmap or wget http://~~/nmap-5.00-1.i386.rpm Ubuntu : sudo apt-get install Nmap

  10. Scanning for TCP Ports • Instruction : nmap –sT Target host

  11. SYN Scan Instruction : nmap –sS Target host

  12. Scanning Host Port • Instruction : namp –p [1-1024] Target host

  13. OS detection • Instruction : nmap –O Target host

  14. Conclusions Nmapis a useful and free security detective tool Through Nmapprovide detailed information thatcan understand host deeply and also avoid unexpectedsecurity vulnerabilities Other scanning tools - Netscantools- Superscan- IPEYE- WUPS

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