a free and open-source port scanner, operating system fingerprinter, and service fingerprinter

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5
votes
1answer
250 views

Why Nmap fragmented scan on Linux is only working from virtual environment?

OLD QUESTION AND TITLE (Look further down for the updated question): Why Nmap fragmented scan is only working on Backtrack? I spent quite a few hours today trying to capture and study some ...
3
votes
1answer
77 views

Difference between ssl/https and plain https in nmap output

I'm trying to analyze the behavior of an IP that works as free WiFi access point. nmap with parameter (-sV) reports the following for two different measurements: PORT STATE SERVICE VERSION 443/tcp ...
2
votes
1answer
25 views

nmap socket trouble

I've been trying to use nmap but it fails with the following output: Starting Nmap 6.47 ( http://nmap.org ) at 2016-06-21 22:24 PDT NSOCK ERROR [0.3460s] nsock_make_socket(): Socket trouble: Address ...
2
votes
1answer
407 views

nmap won't recognize a hostname on my local area network

Scanning the machine on the LAN with my laptop, I got this: gabriele @ osiris { ~ } [ Tue Oct 07 ] [ 08:49 PM] nmap -sP 192.168.1.236 Starting Nmap 6.40 ( http://nmap.org ) at 2014-10-07 20:50 CEST ...
1
vote
1answer
54 views

How does FING (or any of the IP/MAC Address Mappers) work?

Per this comment, I am going to take advice and ask this as a separate question. I am trying to learn more about networking and security and want to play with tools to help increase my understanding. ...
1
vote
1answer
358 views

masscan. how to configure Linux?

I've set this in my sysctl.conf: net.netfilter.nf_conntrack_max=268435456 Because, this border 16,777,216 achieved very quick. Also, I've decrease timeouts: net.ipv4.tcp_fin_timeout = 30 net....
1
vote
1answer
719 views

How to see interactive output when running nmap from a bash script?

I'm trying to run nmap from a Bash script, in a way so that when Enter is pressed it should give some output, as happens when running directly from the commandline. When calling a few different nmap ...
0
votes
1answer
21 views

How to tell stateful vs stateless firewall with nmap ACK scan

I'm having trouble figuring this out. Supposedly, nmap can distinguish stateful firewalls from stateless firewalls by using the -sA or ACK scan, but I'm at a loss as to how one would discern that fact ...
0
votes
1answer
68 views

Ubuntu, lua, nmap and sqlite3 - module 'luasql.sqlite3' not found

I need to work with nmap and sqlite3 and I installed lua 5.1 and lua-sql-sqlite3 on an ubuntu machine: sudo apt-get install lua5.1; sudo apt-get install lua-sql-sqlite3 Now, when I'm doing this: $ ...
0
votes
1answer
81 views

How to “open” on a “filtered” port

I am running: $ ssh user@ip_address and waiting for long time without response. I try to verify the status of my port: $ a=`nmap ip_address -PN -p ssh | grep filtered` $ echo $a 22/tcp ...
0
votes
1answer
25 views

Value of nmap option

I've found in some docs of port knocking, that it is used the option --host-timeout I don't understand why is 201 assigned to it? e.g.: nmap -Pn --host-timeout 201 --max-retries 0 -p 7000 192.168.80....
0
votes
1answer
56 views

Knowing the service that opens the port

I want to close unnecessary ports in debian 8.2. $ nmap localhost | grep open 25/tcp open smtp 631/tcp open ipp Searching the service that corresponds to smtp, $ lsof -i:25 $ sudo systemctl --...
3
votes
0answers
274 views

Why doesn't ufw enforce firewall rules for traffic coming from Virtualbox VM

I've been running Linux Mint 17 on my laptop for a while and thought I had it locked down to not allow any incoming traffic through "Firewall Configuration" (ufw GUI)—I have also validated this from ...
2
votes
0answers
39 views

why does nmap shows same ports sometimes as filtered and sometimes as closed?

When I'm scanning port range 4050-4060 of an smart metering device all ports are reported as closed: root@abc:~/rvm/dlms# nmap -p 4050-4060 192.168.1.242 Starting Nmap 6.47 ( http://nmap.org ) at ...
1
vote
0answers
42 views

How to proxy nmap and dns resolution of nmap

How to use nmap and dns resolution of nmap over proxy? I tried proxychains, but for dns resolution it doesn't work, it's known bug as I read on some forums. It works well without dns_proxy feature in ...
1
vote
0answers
1k views

Postgresql 9.1 - Kali Linux

I started to read this book : http://www.amazon.fr/Metasploit-The-Penetration-Testers-Guide/dp/159327288X And I have some trouble with postgresql 9.1 (in Kali Linux). When I start msfconsole, I ...
1
vote
0answers
1k views

Using nmap's sql-injection script to scan a specific web folder

I'm fairly new to linux and nmap. I'm using debian squeeze. I tried installing an SQL-injection script for nmap. I was able to successfully run a test scan agains my web server running Windows. ...
0
votes
0answers
14 views

Dynamic port scanning

I know how to do a "static" port scan with nmap, however while I have certain processes running I would like to do a dynamic port scan to see what ports these processes open for assurance that the ...
0
votes
0answers
824 views

mass_dns: warning: Unable to determine any DNS servers. Reverse DNS is disabled

I'm using UBUNTU 14.04 as virtual machine on Windows using VMWARE , after logging I installed nmap but after trying to run nmap -sP 10.42.0.0 I get the following message mass_dns: warning: ...
0
votes
0answers
252 views

Can't find connected devices on wifi network

I've been having some issues with finding my devices on the network.. Ettercap & nmap and everything else I have tried does not find a host that is connected to my gateway? I have three devices; ...