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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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18 views

Error occur when loading extension SSL Scanner in Burp Suite

I am trying to load SSL Scanner extension to burp suite extender and I am receiving the following error: java.lang.Exception: Failed to load Python interpreter from Jython JAR file at burp.ohg.&...
3
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1answer
49 views

How do I know that the request and response is using encryption protocols in burp suite?

I know these things can easily be done on wireshark, tshark, etc but is it possible to know that the request I forwarded and the response I received is using protocols such as TLS, TLSv1.2, TCP, HTTP, ...
1
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1answer
51 views

Can you scan unmanaged switches with vulnerability scanners?

The target switches do not have IP addresses and most scanners require IPs as targets. Can you scan unmanaged switches with vulnerability scanners? What scanners can target layer 2?
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0answers
79 views

Router detects my Nessus scan and kicks me off the network [closed]

I'm trying nessus on a public router. When I run a scan on the router at 10.0.0.1, the router somewhat detects it and proceeds to kick me off. If I put targets : 10.0.0.2-10.0.0.255 (scann all ...
1
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1answer
140 views

NMAP reporting all ports open

I'm trying to scan my targets for open ports. However, NMAP reports all of them as 'open'. I know there's a firewall in between. I tried the SYN scan, and when I check the traffic in WireShark I see ...
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3answers
82 views

Nmap scanning single port too fast? Shows as filtered?

I ran into an issue when trying to scan a single port on a single machine. I ran a range scan to find machines with port 25 open. Then I just arbitrarily chose one to work on. I scan that machine with ...
0
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1answer
34 views

What is an excessive amount of SYN requests for port scanning?

I have a slow internet connection - about 12Mb/s. In 10 minutes I have detected a distributed port scan on the router from different IPs. I have counted these SYN packets at in 600 seconds (10 minutes ...
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0answers
70 views

Connected devices to router are hidden

I was scanning devices connected to my WiFi with netdiscover(Kali linux).I was unable to find any device. I only get Router's IP and MAC address. It does not show any device although i have connected ...
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2answers
142 views

How to find and ban some devices from my wifi using the command line? [closed]

I use Arch Linux. I just installed some packages such as nmap, netdiscover and others. It is a ubiquiti internet network, for the sharing of connection to several routers. There are about 7 routers ...
1
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2answers
121 views

Am I being Hacked? So many defferent ip's in router firewall logs [duplicate]

My router dsl light was not stable; It keept disconnecting and connecting..So I logged into Router Homepage to check whats wrong and found there were so many different ip's in Router firewall logs I ...
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2answers
128 views

Get IP address of camera

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

How to detect a scan on a local machine?

Is there any way to detect a scan on the local machine ( the pc that I'm using with a linux os -ubuntu-) from the network that I'm connected to? I know that for the webservers we could check the ...
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0answers
18 views

NMAP multiple IP scanning (specifying ports for every ip) [duplicate]

I am using nmap for daily monitoring the network service and open ports status, i wrote a bash script that scans a range of ip and ndiff the output with previous scans, and make it as a daily cronjob. ...
0
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0answers
81 views

All smartphone ports filtered - how to scan smartphones on local Wifi?

I am using Nmap and scanning my smartphone (LG G5 - Android) on my local network and practicing trying to gain remote access into it. However, whenever I scan my cellphone, either all ports are closed ...
9
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3answers
494 views

What are some instant red flags when scanning an network with nmap

When doing an Nmap scan from an external network, what open ports should be an instant red flag? For example, if I was in the open internet and scanned www.somewebsite.com, besides port 22, what other ...
3
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2answers
93 views

Nmap and it default scripts when I already know some of the information

I am a network guy and not a “hacker” or whatever the official term is these days. I’ve been learning how to use nmap as I think it’s a great tool for just keeping the network secure. The thing is ...
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0answers
33 views

Is it possible to circumvent (ignore) routing table without root permissions?

The local host is configured to send all non-local traffic to a restrictive firewall VM configured in the routing table (route). Preliminary scanning shows that other routers are available on the ...
1
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2answers
80 views

How to scan allowed outbound (destination) ports on the local host?

Without access to firewall rules, I want to scan allowed outbound (destination) ports on the local machine. I would take too long to start a netcat listener for each of the destination ports on a ...
0
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2answers
348 views

Multiple Open ports on a server, is that safe? [closed]

Using nmap I try to scan a server as a result I get multiple open ports. For example when I try to scan domain.com as a result: 7/tcp open echo 9/tcp open discard 13/tcp open daytime 21/tcp filtered ...
1
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0answers
202 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 ...
0
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0answers
355 views

hydra http-post-form question about <form parameters> and <failed login message>

I have 2 question after reading this guide on how to evaluate router admin password: https://buffercode.in/hack-crack-web-form-passwords-using-hydra-burpsuite-kali-linux/ This is the command format: ...
1
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2answers
850 views

Xmas Scan Versus FIN Scan

While studying Nmap, I came across different port scans. Out of these XMAS and FIN scan caught my interest. Though XMAS scan sends FIN, URG and RST flags, the response is the same as that of a FIN ...
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1answer
124 views

What are some IDS/IPS that are able to detect stealth scans done in nmap today? [closed]

I was informed that these scans are no longer "stealth"
2
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2answers
65 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 ...
1
vote
1answer
430 views

How to control the ciphersuites in nmap “ssl-enum-ciphers”

There is a script for enumerating the TLS versions and ciphersuites ofered by a server provided by nmap. See this link. Is there a way that allow me to specify the verisions and ciphersuites I want ...
2
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1answer
83 views

Named connections all over the world

I just started working for a small business and run their server. The entire thing is on macOS, and I've been monitoring my network lately due to some weird things in a few log files. I've come ...
0
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1answer
418 views

Detect and Scan Open Ports

I am trying to understand two questions - I run Qualys/Nessus scans on periodic basis in our Azure/AWS environment and always run into issues while detecting for Open ports, A basic nmap scan would ...
1
vote
1answer
257 views

Black Box penetration testing in private network

I came across a scenario where an organization is using micro-service architecture. They are using Amazon AWS as a web service and Kubernetes to maintain micro-services. All the EC2 instances are in ...
3
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1answer
2k 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 ...
0
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3answers
1k views

How to get shodan to report IP addresses with a specific open port?

I've done the leg work and I've struggled to identify how to search with the Shodan CLI, or the web search, just for a specific port and output all the IP addresses that expose this port. For ...
2
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1answer
231 views

Nessus Target Availability

I need to write a script (I am not asking for script !) in order to verify if target Servers are available (Up or Down) for Nessus scan or not. The problem is that, sometimes even if ping does not ...
1
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0answers
79 views

scapy Deauthentication address understanding

I have the problem to understand from_DS, to_DS with Deauthentication packet, deauthentication packets are type=Managment, FCfield managment and control frames always FROM_DS = 0 , TO_DS=0, ...
0
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1answer
248 views

Replace Nmap with Nessus

I have to replace NMAP with Nessus. I got answer for few settings, but there are few settings in NMAP for which I am not able to get answer. If you could answer me, it would be helpful. For example, ...
7
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3answers
3k views

Nessus Port scan Vs NMAP Port scan

My objective is to find network vulnerabilities. I have used Nessus and NMAP both for vulnerability scan. I have to verify if I can use only "Nessus" rather than using "NMAP". According to my ...
25
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2answers
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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3answers
342 views

Number of bytes in a TLS handshake

How can I identify precisely the exact number of bytes the ClientHello and ServerHello in a TLS traffic needs? this is for traffic analysis purpose to capture the TLS bytes of interest (client hello ...
0
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1answer
88 views

Re-run nmap OS fingerprint match with existing subject fingerprint

I have a collection of nmap subject fingerprints (described here), but have updated my local (private) reference fingerprint database since they were collected. Is there any existing way to re-match ...
1
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1answer
149 views

How vulnerability scanners identify version of services on targets

I would like to know that how vulnerability scanners identify the version of services running on the target after identifying the service by the port number.
2
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1answer
261 views

How to perform a port scan against a target with a software-based firewall?

I use NMAP to perform port scanning, e.g., TCP SYN scan: nmap -sS 192.168.0.12. I've two virtual machines running Windows XP and Windows 7, respetively. These have several services running, e.g., ...
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2answers
1k views

Most efficient way to scan for webservers

Lets say I want to scan a large amount of ip addresses for webservers running on port 80 (aware that there are other ports for webservers, ignoring for example). What would be the most efficient way ...
0
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2answers
2k 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, ...
1
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1answer
74 views

Morris worm and fixes

I am new to information security and was reading about Morris worm and encoutnered some nice reports and articles on it like this, this and this. There are many other article and tech reports on this. ...
0
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1answer
370 views

Zenmap: Can't get hostnames for clients just IP addresses

I have run both a quick and intense scan on my network with Zenmap and I can't get the hostnames of the clients. If I do an ARP scan I get some hostnames and if I use Fing app on my iPhone, I can see ...
1
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2answers
769 views

nmap --top-ports range selection

I'm trying to find out if it is possible to select a range from within the --top-ports when scanning with nmap. I'm performing scans which are progressive in nature, for example, scanning the top 100, ...
2
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0answers
43 views

Protecting smart devices on my local network [closed]

I have a network of smart devices I have created, I wish to make more secure from attackers. I have implemented a Gateway on a Data Stream Network (DSN) to allow users to access these devices and ...
2
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5answers
825 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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3answers
270 views

Should we use Microsoft security or defender for securing our WAN network [closed]

I would like to understand much about Microsoft Security Essentials or another antivirus which build in or developed by Microsoft. I'm planning to set up the network for my company and use Microsoft ...
1
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1answer
3k views

/hnap1/ scans router compromised or worm?

Recently, I saw some strange entries on my local-only webserver. The thing is I don't know if the attack came from outside the network or from an infected machine. I have read up a little on the hnap ...
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0answers
229 views

Nethogs showing several IP addresses and ports - Port sniffing?

I have a small Ubuntu server (VPS from provider with control panel) machine for practice purposes - no production or critical stuff. I've set up ufw and nginx with a sample index.html page. I control ...
0
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0answers
101 views

nmap and slow scanning [duplicate]

I am using the below command to scan a host nmap -sS -sV -n -v -T 4 -p0-65535 10.10.10.5 It has been almost like 1 hour and still the scan is at 17%. Can anyone please let me know if there is a way ...