Questions tagged [network-scanners]

Programs that map out a network to figure out which computers and services are available to be exploited.

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Packet Capturing with 2 or more SSL Certificate

To capturing the packet from android application, I configurated proxy likes below. - Physical :::: [Mobile Device] -------------------- [PC] ------------------- [Server] Installed :::: [Packet ...
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0answers
38 views

importing ip ranges list as a text file in angry ip scanner [closed]

I don't know how to correctly import IP ranges in a text file for angry ip scanner. I copied the IP ranges from some website and import them in a .txt file like 45.5.0.0-45.5.3.255 45.5.15.0-45.5.15....
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1answer
6k views

Resuming an interrupted nmap scan:

I need to: --resume <filename>: Resume an aborted interrupted scan. But I didn’t: -oN/-oX/-oS/-oG <file>: Output scan in normal, XML, s|<rIpt kIddi3, ...
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3answers
126 views

Identification of TLS POODLE Vulnerability

How can I identify whether the remote server is vulnerable to TLS POODLE vulnerability? Although, there are online scanners such as Qualys SSL Labs. As per my understanding, these online scanners do ...
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1answer
54 views

pycharm opening ports [closed]

By running a simple port scan, I have noticed that pycharm is opening three ports on the machines it is installed on. Pycharm is a great tool for developer, but it seems fairly awful to me on the ...
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1answer
112 views

Incorrect results via Nexpose, but displaying correct one with Nmap

We are scanning our network via Nexpose. Recently an asset was found vulnerable to Wannacry CVE 2017-0146 SMB Remote code execution vulnerability. However when i have tested it same through Nmap it ...
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4answers
5k views

How can I scan open ports without being traced back

I would like to scan open ports of a server. But as far as I know, when I try to scan the open ports with something like nmap in shell they would be able to trace me. Is there a way to secure this ...
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1answer
57 views

Local Scans initiated from a VLAN Broadcast IP address

Just reviewing some logs and I am seeing local scans to several local IP addresses on port 137 within my network. The source IP however is the broadcast IP of the VLAN (.255). I have checked the ...
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Arachni on Mac OS X Catalina [migrated]

Arachni is a feature-full, modular, high-performance Ruby framework aimed towards helping penetration testers and administrators evaluate the security of modern web applications, I never use it before ...
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5answers
7k views

Open-source penetration-test automation

What order do typical open-source penetration tests operate? Which tools are run first, second, third -- and how do you control them? Does one simply use Metasploit RC files? A network vulnerability ...
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1answer
181 views

Advice to detect suspicious activities on network

A private network (about 150 PCs) is connected to the internet through an edge router. According to the net admin, his network is scanned from the outside, at the edge router. I don’t have any more ...
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Is there an updated (non-Nmap) top 100 or top 1000 common ports list?

I know Nmap has nmap-services file which gives us the list of top 1000 ports/services found on the Internet. But this list seems to be outdated, as the Nmap top 1000 list doesn't include several ...
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2answers
165 views

Get IP address of camera

Is it possible to get the global IP address of a nearby camera? For example, an IP camera is connected to a network, but you are not on that network, and cant get access for whatever reason) but you ...
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1answer
727 views

How to “Scan for hosts” only using ettercap (“text”) terminal interface?

I've been looking for a command to "Scan for hosts" in terminal ("text") ettercap. Do anyone knows how to scan the local subnet from the ettercap terminal? The graphical ("gtk") ettercap has the ...
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1answer
47 views

Scapy: Sending forged Probe Requests and capturing them in a different device

Objective: Sending a forged Probe Request frame from one machine and capturing it on a second machine. I have two codes running: sender.py interface = sys.argv[1] dot11 = Dot11(addr1='ff:ff:ff:ff:...
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1answer
96 views

Unkown ip adress in my lan [duplicate]

While scanning my LAN with Angry IP Scanner, I found an ip @ that I didn't recognise 192.168.1.59: IP Ping Hostname MAC Address MAC ...
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1answer
95 views

Is there any method or tool other than nmap for the detection of an OS?

I wanted to know if there was any other way to detect the OS of a network (other than nmap) since nmap doesn't detect most versions of Windows 10 at all and identifies them as a different OS ...
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1answer
162 views

Nmap giving different result between Mac OS scan and Linux (Kali) scan [closed]

I try to do a simple TCP scan on an Kubunt VM (is on VirtualBox), from two different OS. From the Host (Mac OS system) and from a Kali Linux VM (tried VirtualBox and Parallels also). Kali Linux (...
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2answers
126 views

How to Defend Against Port Scan Attacks

I was told that Hackers scan for open ports in random IPs and if they are open they hack the computer. What open ports can be hacked? How do I close the ports?
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0answers
146 views

Where to run long automated scans? [closed]

I'm trying to run some automated scans without stopping for long periods of time (each scan can take anywhere from 8 hours to 3 days). I currently don't have a PC I can leave running for many days ...
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0answers
40 views

Router reboots when doing port scan [closed]

This question is very much related to Router reboots when using Nmap, the difference is that I'm actually interested in a practical solution to this problem. I have a piece of C code that is doing ...
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1answer
227 views

Pentesting: Active vs Passive Scan [closed]

I couldn't find answers to this question on this forum so I'm just gonna ask: What are Active Scans and Passive Scans? What are their differences? Please include in your answer(s): differences in ...
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4answers
28k views

Could Nmap scan switches/routers

Nmap can scan and sometimes successfully detect the running OS in the remote host. However, can nmap scan routers and switches? Most of them use an embedded system.
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2answers
291 views

Should ports be visible to nmap?

I'm currently working on the firewall when I discovered that the firewall exposes a lot of ports outside of the internal network. I discovered this when setting up a new FTP server using a basic nmap ...
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2answers
194 views

Did I just find a bug in CloudFlare or is this a feature?

While doing penetration testing for a client I stumbled upon a security incident. CloudFlare promises to hide the origin IP address when using its DNS. I went to dnsdumpster.com, inputted my client's ...
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82 views

Port scanning - Idle scan 2.0?

I have some server applications and from time to time I'm being victim of some attacks which might be of interest and I'm going to describe in the following. The most recent attack originated from ...
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2answers
6k views

Import nmap scan results into OpenVAS

I have recently been introduced to OpenVAS for scanning our network at work. I am familiar with nmap, and I am happy with it's performance when used stand-alone from the cli, through iptraf I can see ...
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1answer
101 views

Nmap scan slow on some IP ranges [closed]

I'm a security newbie trying to scan a VPN in the range 10.0.0.0 - 10.0.15.254 using nmap on Kali Linux. The routing table: route -n Kernel IP routing table Destination Gateway Genmask ...
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1answer
1k views

A PC constantly scans my network for IP addresses using ARP

Using wireshark I have found that one PC on my network constantly scans for devices on the network using ARP, e.g. Who has 192.168.0.26? Tell 192.168.0.10 It does that approx. 2 times a second and ...
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1answer
128 views

Firebase ports scanning using nmap

Purely for research purposes used nmap to check security of my application deployed to Firebase. However, there some questions which I can't understand: Why Firebase has open so many ports? Something ...
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1answer
1k views

NMAP results inconsistent

I'm doing a NMAP scan that runs continuously. For some reason the results are not consistent. Sometimes it detects all the connected devices of the local network and sometimes only some of them. ...
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3answers
5k views

How wise is it to use a tool for portspoofing at your server to confuse attackers?

I came across this tool recently https://github.com/drk1wi/portspoof How efficient will it be to use it to confuse hackers doing port scanning? If it's actually going to be pretty efficient, why ...
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6answers
2k views

What are the best pratices to avoid my server being port scanned

The title probably says it all. I just wanna know what are the best technics to avoid having a port scanner detecting open ports on my server. I'm using a Linux distro as my OS (Ubuntu Server).
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227 views

Malicious IP addresses [closed]

I am looking for updated lists of IP addresses that belong to malware's C&C, botnets, malicious scanners, or other sort of malicious activities. Is there any public database of malicious IP ...
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1answer
104 views

Hardening against Nmap and other network scanners

It is possible to make Server respond with irrelevant data if it is scanned with Nmap? If yes, are there any examples of such SW?
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2answers
153 views

Can wireshark capture the exact payload and end point of API used by my Mobile APP?

I was just wondering if someone having total control over his/her network, is running my mobile app. Also wireshark is capturing all requests made using the network. My app is calling API endpoint ...
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1answer
8k views

NMAP - Closed vs Filtered

A lot of people seem to ask this question, as there are a bunch of posts about it; however I feel like none truly answer the question (that I have found). I want to understand why NMAP decides to ...
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4answers
7k views

Determining false positives when scanning for live hosts with Nmap

When doing a vulnerability assessment on a large network, it seems general practice to determine which hosts on the network are live. This can be done in various ways. From what I have read it is ...
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5answers
384 views

How to introduce delay in scanning tools that do not implement delay without touching source code?

Usually scanning tools implement a switch in order to delay requests and not flood the target. Sometimes there tools that do not implement this delay option. Is there a way to delay packets from ...
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0answers
723 views

How secure is my apartment's building wide wifi network using Spectrum Community Solutions?

Recently my apartment moved from having individual modems (with our own router/wifi network) to this Spectrum Community Solutions building wide network. Everyone can connect to the network anywhere, ...
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5answers
21k views

How to detect hosts running in virtual machines with nmap?

I have to determine if a given subnet has virtual hosts. Are there any ideas about what switches to use?
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1answer
69 views

Finding location of malicious internal IP in Wide Area Network [closed]

Malicious Traffic detected from an internal IP in Wide Area Network (Network of multiple cities in a country). How to find the city of that IP address in Wide Area Network? There is no IP subnet by ...
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1answer
180 views

How to find out which application runs behind port 31337?

I found an open port on a "Kartina Quattro" (https://www.kartina.tv/article/247-kartina-quattro). It's a device for watching russian TV channels. The port number is 31337 and the Service is called ...
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4answers
709 views

Router Receiving Unknown Packets from the Same IP and Port Even After Address Rotations - How?

One of our client's routers is receiving packets from the same source IP address and port repeatedly, even when the router is rebooted and obtains a fresh dynamically assigned IP address, and while no ...
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2answers
583 views

Open ports on my NetGear router

I ran an nmap scan on my home router and I am seeing a ton of open ports. Is this normal? How do I go about closing them? $ nmap 192.168.1.1 Starting Nmap 7.70 ( https://nmap.org ) at 2019-03-16 20:...
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0answers
29 views

Nmap showing different open ports every few seconds [duplicate]

I'm running Nmap on an Amazon Web Services EC2 instance but between runs just a couple seconds apart, I'm getting new results. Is this normal? I'm seeing open ports then they don't show. I'm running ...
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3answers
2k views

Why would a stealth scan attract more attention than a connect scan?

I'm reading an Information Security book and am faced with the question: Why may nmap stealth scans(SYN) attract more attention than simple connect scans(TCP connect())? Why might it be?
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1answer
755 views

TCP Scans vs SYN Scans in port scanning

What is the difference between TCP Scans and SYN Scans?
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2answers
4k views

Why doesn't `nmap -sn 192.168.2.1/150` show the hosts that are up?

I wanted to know the hosts that were up on my network. So while working with Nmap I couldn't understand why using the command nmap -sn 192.168.2.1/150 it didn't want to tell me the hosts that were up, ...
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2answers
535 views

nmap - Difference between “Filtered” and “Admin-Prohibited”

I am a rather new user to nmap. By using some Google-Fu, I am still not able to ascertain what is the criteria used in order to distinguish "filtered" ports from "admin-prohibited" as they both seem ...

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