python使用nmap端口扫描的两种方法

Firstly： sudo apt-get install nmap

Secondly：pip install python-nmap

Thirdly：copy the code bellow to a file like scan_network.py

#!/usr/bin/env python
import nmap
import optparse

def nmapScan(tgtHost,tgtPort):
    nmScan = nmap.PortScanner()
    nmScan.scan(tgtHost,tgtPort)
    state=nmScan[tgtHost]['tcp'][int(tgtPort)]['state']
    print ("[*] " + tgtHost + " tcp/"+tgtPort +" "+state)

def main():
    parser = optparse.OptionParser('usage %prog '+\
                                   '-H <target host> -p <target port>')
    parser.add_option('-H', dest='tgtHost', type='string',\
                      help='specify target host')
    parser.add_option('-p', dest='tgtPort', type='string',\
                      help='specify target port[s] separated by comma')
    
    (options, args) = parser.parse_args()
    
    tgtHost = options.tgtHost
    tgtPorts = str(options.tgtPort).split(',')
    
    if (tgtHost == None) | (tgtPorts[0] == None):
        print (parser.usage)
        exit(0)
    for tgtPort in tgtPorts:
        nmapScan(tgtHost, tgtPort)


if name == 'main':
    main

Forthly：chmod +x scan_network.py

fifthly: ./scan_network.py -H 192.168.1.1 -p 22,23

第二版：支持以逗号分割及以-分割的端口范围

#!/usr/bin/env python
import nmap
import optparse
def nmapScan(tgtHost,tgtPort):
    nmScan = nmap.PortScanner()
    nmScan.scan(tgtHost,tgtPort)
    state=nmScan[tgtHost]['tcp'][int(tgtPort)]['state']
    print ("[*] " + tgtHost + " tcp/"+tgtPort +" "+state)

def main():
    parser = optparse.OptionParser('usage %prog '+\
                                   '-H <target host> -p <target port>')
    parser.add_option('-H', dest='tgtHost', type='string',\
                      help='specify target host')
    parser.add_option('-p', dest='tgtPort', type='string',\
                      help='specify target port[s] separated by comma')

    (options, args) = parser.parse_args()

    tgtHost = options.tgtHost



######this code bellow is to support scan port range like 66-88

    tgtPorts = []
    tgtPorts_cache = str(options.tgtPort).split(',')
    i = int(len(tgtPorts_cache))
    for m in range( 0,i ):
        tgtPorts_split = str(tgtPorts_cache[m]).split('-')
        if(len(tgtPorts_split) < 2):
            tgtPorts.extend(tgtPorts_split)
            #print(tgtPorts)
        else:
            for n in range(int(tgtPorts_split[0]),int(tgtPorts_split[1])+1):
                tgtPorts.append(str(n))
                #print(tgtPorts)

######above the tgtPorts are the ports list you want to scann

    #tgtPorts = str(options.tgtPort).split(',')    
    if (tgtHost == None) | (tgtPorts[0] == None):
        print (parser.usage)
        exit(0)
    for tgtPort in tgtPorts:
        nmapScan(tgtHost, tgtPort)


if name == 'main':
    main()

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