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Questions tagged [nmap]

Nmap (Network Mapper) is a security scanner originally written by Gordon Lyon (also known by his pseudonym Fyodor Vaskovich) used to discover hosts and services on a computer network, thus creating a "map" of the network.

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Turned off SSL's in JBOSS nmap thinks different

I set my JBOS server to use TLS only with the following line in the connector sslEnabledProtocols = "TLSv1.1,TLSv1.2" but when I check the server with NMAP it shows: ssl-enum-ciphers: | SSLv3: | ciphers: | …
whd
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iptables rules and port scanners blocking

In order to block port scanners on Linux, i have found some rules on iptables to block attacker IP address. These rules work correctly and it blocks the attacker, and logs the attacker ip address in the kernel.log file. The questions is, why these…
Zareh Kasparian
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Nmap Performance Mass Scanning SSL/TLS Certificate Data

Is Nmap built to use all of the available resources eg. in a server such as Dell PowerEdge T620 Server Xeon 16 Core 2.6GHz 128GB RAM with connectivity to both network ports? Basically, would the program take avantage of the extra CPU, Networking…
delhics
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What is service "ismserver" listening on port 9500?

I am on Ubuntu 16.04 Upon nmap -sV localhost, I came upon the output line 9500/tcp filtered ismserver which I cannot recognize. The service ismserver listening on the port matches the IANA record, as seen on…
Claire
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Hide running service such as Nginx from a port scan

When I run a Port Scan to my server through NMap (like this)... $ nmap -A -p443 example.com ...then I get an output like... Starting Nmap 7.70 ( https://nmap.org ) at 2018-03-29 00:14 BST Nmap scan report for example.com (1.2.3.4) Host is up…
David Garcia
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How to disable CONNECT method in Apache 2.4.29 and return 405 status?

I'm using Apache 2.4 as a reverse proxy and according to this post, I have no use for the HTTP CONNECT method. So I tried disabling proxy_connect module when I built Apache using configure (static) option. $ ./apachectl -v Server version:…
Say No To Censorship
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Scanning internal network in search of Jenkins instances

I have issues with find all Jenkins instances in environment: I've tride to use nmap with http-title script to find all that answer with Dashboard[Jenkins] but some of them had more redirections than 4, eyewitness is not effective (65k hosts will…
Schredis
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getting hardware information of all devices on the network

I was wondering if i can get a full hardware information about each device on the network? (preferred linux commands) with the nmap command I found the devices in my net, but only name, ip addresses and MAC. is it possible to get full hardware info…
itai257
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Scan network for all devices

I'm running into a small issue with a network, when I scan it using either nmap or even Fing for android, I can only get the router, and my device, even though I know other devices are connected. This happens on a network using Routerboard hardware…
James McFarland
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Port opened on RHEL but nmap cannot find it

I am using tomcat on RHEL7 cloud instance on default 8080 port. Opened port using sudo firewall-cmd --zone=public --add-port=8080/tcp --permanent, reloaded using sudo firewall-cmd --reload. Connecting curl 0.0.0.0:8080 works fine but I cannot access…
krsoni
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use multiple ip addresses to tcp check remote server's port

Im trying to tcp connect yahoo's mail server on port 25 . I have 3 public ip addresses lets say:- (all are allowed in SPF records) 99.99.99.99 77.77.77.77 88.88.88.88 How to telnet(or other checks) using particular ip addresses to yahoos mta (check…
sherpaurgen
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NFS troubles: showmount -e {server IP} doesn't work

I'm having a number of troubles setting up an NFS mount on a Ubuntu server, and the main issue seems to be in making connection from the client (a Mac). I can ping the server address fine. Here is an NMAP result: Nmap scan report for…
HomerPlata
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Which ports does NMAP scan for OS-detection

nmap offers OS-detection functionality based TCP/IP fingerprinting by sending six probing packets and analyzing their responses. In the documentation is says that some of them are send to an open port and some are sent to a closed port. Does anyone…
arne.z
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Nmap scan yields: FATAL: Unknown datalink type (127)

I get an error message trying to scan ports on any remote host using nmap (windows): Starting Nmap 7.25BETA1 ( https://nmap.org ) at 2016-07-28 12:36 Jerusalem Daylight Time NSE: Loaded 138 scripts for scanning. NSE: Script Pre-scanning. Initiating…
diman82
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IPTables Policy INPUT DROP but accepts connection

I configured iptables with the following rules: iptables -I INPUT -p tcp --dport 22 -j ACCEPT iptables -P INPUT DROP iptables -A INPUT -p tcp --dport 80 -j ACCEPT iptables -A INPUT -p tcp --dport 443 -j ACCEPT iptables -I INPUT -i lo -j…
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