checks for anonymous login ftp

#!/usr/bin/python
#Uses nmap to scan ip range
#for port 21(ftp) open then
#checks for anonymous login.

import commands, sys, getopt, StringIO, re, ftplib
from ftplib import *

tmp, args = getopt.getopt(sys.argv[1:],"")

def scan():

iprange = args[0]
ip_list = []

nmap = StringIO.StringIO(commands.getstatusoutput('nmap -P0 '+iprange+' -p 21 | grep open -B 3')[1]).readlines()

for tmp in nmap:
ipaddr = re.findall("\d*\.\d*\.\d*\.\d*", tmp)
if ipaddr:
ip_list.append(ipaddr[0])
print "Found",len(ip_list),"hosts with ftp port open.\n"

for ip in ip_list:
try:
print "Checking for anonymous login on",ip
ftp = FTP(ip)
ftp.login()
ftp.retrlines('LIST')
print "\n\tAnonymous login successful on",ip,"\n"
ftp.quit()
except (ftplib.all_errors), msg: print "An error occurred:", msg

#................................................

if args == []:
print "Usage: ./ftpanon.py "
else:
print "\n\t [ Scanning", args[0],"]\n"
scan()