Nmap Development mailing list archives
sometimes Nmap says ports open when actually ports is closed or filtered, when several nmap processes run at the same time,
From: "liuruihong" <liuruihong () baidu com>
Date: Tue, 20 Nov 2007 12:08:47 +0800
Nmap -V Nmap version 4.20 ( http://insecure.org ) 1. The script /home/liuruihong/port/portscan : #!/bin/sh temp=`date|awk '{print $1}'` while read LINE do nmap $LINE >> result-$temp done 2. I use crontab to run the script: 10 8 * * * cd /home/liuruihong/port;./portscan < /home/liuruihong/port/ip1 10 8 * * * cd /home/liuruihong/port;./portscan < /home/liuruihong/port/ip2 10 8 * * * cd /home/liuruihong/port;./portscan < /home/liuruihong/port/ip3 10 8 * * * cd /home/liuruihong/port;./portscan < /home/liuruihong/port/ip4 3. ip1,ip2,ip3,ip4 every ip file have 7 ip//numbit, eg: 202.108.249.128/26 61.135.146.192/26 202.108.250.192/26 61.135.145.192/26 202.108.11.0/24 61.135.154.192/26 220.181.27.0/26 4 sometimes Nmap says ports open when actually ports is closed or filtered, Eg: most of 202.108.23.90`s ports are closed Starting nmap 3.70 ( http://www.insecure.org/nmap/ ) at 2007-11-19 08:12 CST Interesting ports on xd-23-90-a8.bta.net.cn (202.108.23.90): PORT STATE SERVICE 1/tcp open tcpmux 2/tcp open compressnet 3/tcp open compressnet 4/tcp open unknown 5/tcp open rje 6/tcp open unknown 7/tcp open echo 8/tcp open unknown 9/tcp open discard 10/tcp open unknown 11/tcp open systat 12/tcp open unknown 13/tcp open daytime 14/tcp open unknown 15/tcp open netstat 16/tcp open unknown 17/tcp open qotd 18/tcp open msp 19/tcp open chargen 20/tcp open ftp-data 21/tcp open ftp 22/tcp filtered ssh 23/tcp filtered telnet 24/tcp open priv-mail 25/tcp open smtp 26/tcp open unknown 27/tcp open nsw-fe 28/tcp open unknown 29/tcp open msg-icp 30/tcp open unknown 31/tcp open msg-auth 32/tcp open unknown 33/tcp open dsp 34/tcp open unknown 35/tcp open priv-print 36/tcp open unknown .. .. .. ... .. .. _______________________________________________ Sent through the nmap-dev mailing list http://cgi.insecure.org/mailman/listinfo/nmap-dev Archived at http://SecLists.Org
Current thread:
- sometimes Nmap says ports open when actually ports is closed or filtered, when several nmap processes run at the same time, liuruihong (Nov 19)