Skip to main content
Share Your Experience: Take the 2024 Developer Survey

Questions tagged [ports]

In computer networking a port is a software construct serving as a communications endpoint in a computer's host OS.

36 questions with no upvoted or accepted answers
Filter by
Sorted by
Tagged with
3 votes
0 answers
707 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 ...
aerojas's user avatar
  • 31
3 votes
0 answers
836 views

What vulnerabilities are associated with port triggering?

Background To address a VoIP voice lag issue, my provider added port triggering rules for over 42,000 ports on my router, which seemed sloppy. And as I understand it, port triggering should only be ...
BolasStone's user avatar
2 votes
0 answers
3k views

Using burp suite, how can I intercept traffic from one localhost port, but not another one

I have one webapp available on localhost:12345, and another service running on `localhost:6789'. I want to monitor the traffic to/from the webapp (12345), but universally pass the traffic to the ...
user3.1415927's user avatar
1 vote
0 answers
544 views

How would you hide yourself whilst conducting a scan on a target network to identify open service ports?

I am working on this question which asks how you would conduct a scan of a target network to identify open service ports without revealing your IP address. It wants details such as IP address ...
Thanos's user avatar
  • 111
1 vote
0 answers
131 views

Is someone accessing my win10 computer?

I have been wondering if someone is accessing my system and after doing using some basic assessment tools like netstat and event viewer, found some unusual open ports(12345) and special Logon! below ...
M D's user avatar
  • 11
1 vote
0 answers
358 views

Does Label Distribution Protocol (LDP) on port 646 need to be open to the Internet? What are the risks associated with it?

I am a security engineer trying to understand the risks of having LDP exposed to the Internet on port 646. I cannot find much information available on the Internet documenting this. Any information ...
Justin Massey's user avatar
1 vote
0 answers
2k views

Best port to setup Outline VPN for obfuscation

Many outline access keys use a random port but some do 443, I’ve found out since port 443 is for http its harder to find out that port is using a vpn. So the question is, why don’t other Outline ...
Emily1001's user avatar
1 vote
0 answers
134 views

How to evaluate a responsive but unknown network protocol?

I am studying CREST CPSA where the syllabus is listed here. There is a part of the syllabus which states I should know the Evaluation of responsive but unknown network applications. I find this ...
questioner's user avatar
1 vote
1 answer
351 views

Change ettercap default port

Guys does anyone know how I can change the port that ettercap runs? I need it to run on port 8080. When I try to run sudo ettercap -G it presents me with this error: ERROR : 13, Permission denied [/...
Maria Eduarda's user avatar
1 vote
1 answer
687 views

Intensive 586 (ms-shuttle) port scan/exploit/hacking attempts

Recently i wanted to play a bit with TCP/UDP networking (and touch some custom HTTP server impl) on C# and found out that i'm getting requests from totally unknown dudes, such as this one: FROM: [::...
Busy Shader's user avatar
1 vote
0 answers
489 views

Is port scanning used by software for legitimate reasons?

Does normal network traffic sent out by software or anything else use port scanning for legitimate reasons? I'm using psad on my linux server and am unsure if setting the auto-ban IP feature on danger ...
sysadt's user avatar
  • 11
1 vote
0 answers
540 views

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 ...
519dsd's user avatar
  • 11
1 vote
0 answers
125 views

WMI Performance Adapter function for Chrome browser?

Does someone know why the WMI Performance Adapter (WmiApSrv.exe) always starts when launching Chrome browser? Whats the function of this service? I have heared this service can be maliciously used to ...
johnsmiththelird's user avatar
1 vote
0 answers
479 views

Inbound rules for a port is configured and disabled yet an NMap scan shows that the port is opened

I am new to Windows Defender but have read about it to understand the basics of Inbound/Outbound rules. As mentioned on the app, Inbound connections that do not match a rule are simply blocked. For ...
Malabika Sen's user avatar
1 vote
0 answers
176 views

Machine reaching out to Microsoft IP address using NBTstat command

I have limited logs for this event but the IPS says its a NBTstat query outbound over UDP port 137 to a Microsoft owned IP address. Should UDP 137 ever reach out externally? This is about all the ...
Kajunga's user avatar
  • 11
1 vote
0 answers
235 views

Are ephemeral ports random by default in Windows?

I'm analyzing a malware and I've noticed that it is doing some form of ephemeral port exhaustion. My question: Is it normal for ephemeral ports in a Windows system to be selected in series (i.e. ...
Jay Holister's user avatar
1 vote
0 answers
1k views

Open Ports (WAN side) on Netgear R7000 Router using nmap

An nmap scan (WAN side) on my Netgear R7000 router indicates that there are two ports open: 80/tcp (http) and 1720/tcp (h323q931). My method to perform a WAN side scan on the router is to access the ...
user135584's user avatar
1 vote
0 answers
534 views

Port scanning on server

My use case is to check open ports on multiple servers, so when I try: nmap -iL list.txt then nmap only scans for some particular ports whether they are open or closed, but when I try: namp -p 1-...
bhartay's user avatar
  • 89
0 votes
0 answers
51 views

How to fix metasploit handler?

My Termux Meterpreter doesn't work. Commands: msfconsole set Proxies http://185.107.56.83:443 use exploit/multi/handler set PAYLOAD windows/meterpreter/reverse_tcp set LHOST 0.0.0.0 set LPORT 8080 set ...
Duck's user avatar
  • 11
0 votes
1 answer
125 views

Auto-opening a reverse bash shell

Is it possible to use a tool like netcat to create a listener on the attacker's device with a specific command that when the target device or machine connects to this IP and port, it runs a bash shell ...
19216811's user avatar
0 votes
0 answers
169 views

NMAP same destination ip, different scanner interface, different result

I am trying to check the port status of a external IP using NMAP, I am getting different result on different interface to same destination (destination is a public IP). When NMAP tried from the ...
Shaim Khanusiya's user avatar
0 votes
0 answers
2k views

Scan for open ports on subdomain

I am curently scanning for open ports on a subdomain. Say I have example.com and subdomain.example.com, but this subdomain can only be reached at port 8443. How can I scan for other potential open ...
vargr616's user avatar
0 votes
0 answers
93 views

nmap scanning Raspbian with strange results

I'm a high schooler in a CyberDefense Class and we are learning to PenTest. I'm on Red Team and my teacher set up a system with Rasbian as the OS. When I run a scan on the computer scanning the Top ...
Aaron908's user avatar
0 votes
1 answer
5k views

Are there security implications of allowing Discord through Windows Firewall?

I just installed Discord (downloaded from the official Discord website) and after the install a Windows Firewall pop-up appears asking me if I want to allow Discord through Windows Firewall. I don't ...
em1l10200's user avatar
0 votes
0 answers
222 views

Mixed results from different port scanners - stealth vs closed

I did some port scanning of the local network, as a bit of security due diligence, expecting the first 1000 to be stealthed. However, the results are mixed, when running the scan with different ...
S Kos's user avatar
  • 1
0 votes
0 answers
281 views

Router scanning ports on all connected devices

From time to time, my router starts to scan ports on all the connected devices. I have an internal RPi server which I restricted its access to the internet from the router. I checked the "/var/...
POD's user avatar
  • 101
0 votes
0 answers
282 views

Very odd traffic - is it legit?

While troubleshooting an unrelated network problem, I noticed an interesting pattern on one of our networks for the last few days (at least). Before crying wolf, I wanted to see if somebody here may ...
Kevin Keane's user avatar
  • 1,107
0 votes
0 answers
273 views

Is it a Bad Idea™ to open all IPv6 ports for devices in an isolated guest network?

At home I have a dual-stack IPv4/IPv6 broadband connection, and I also have a wireless access point. The access point currently bridges all traffic into my LAN, which is not segmented in any way, so ...
eomanis's user avatar
0 votes
0 answers
258 views

Open Ports at ISPs Gateway

I am working to set up OpenVPN access to my home network. To do this, I had to contact my ISP, because they had the necessary port blocked at the Gateway/Router that I do not have access to. In my ...
DRoyLenz's user avatar
0 votes
1 answer
949 views

Understanding port scanning with firewall enabled

My objective is to do a port scanner in windows and find the ports which are open. Suppose, I run an application which opens up a port 8000. Now I create a new inbound rule to block all incoming ...
Oxia's user avatar
  • 1
0 votes
0 answers
101 views

Firewall issues

Background I have an Android device (Minix M5) that I handed to a customer The device only does outbound connections, so no inbound traffic The customer confirmed that s/he opened up the ports ...
daxro's user avatar
  • 1
0 votes
1 answer
130 views

Finding how many filtered ports of a host that would be listed as “filtered” on Nmap

I just started working on nmap and was confused by this question. I'm unsure if I understood it correctly, so I appreciate your help with this. Using Nmap, find how many ports are filtered in testphp....
KhoaiLangNuong's user avatar
-1 votes
1 answer
3k 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 ...
SunnySide's user avatar
-1 votes
2 answers
8k views

Kali Linux/Metasploit in VirtualBox - Issue with ports

I've been attempting to get port 4444 to open these past couple of days. I finally figured I'd try to get it working on my Windows machine first and I finally got it. Now, no matter what I do in the ...
Jake Rieger's user avatar
-1 votes
1 answer
216 views

Strange behavior of Nmap

I do port scanning with Nmap when HotSpot Shield VPN is running; and I am receiving strange result - when HotSpot Shield is running, Nmap tells me that all of the ports are open and when HotSpot is ...
Farid Abdi's user avatar
-4 votes
1 answer
6k views

How to use beef-xss on ports other than default 3000?

I want to use BeEF-XSS Framework over WAN (for educational purposes). The only problem is that my ISP is blocking port 3000. So, after some research, I found this page that says: However, beef-xss ...
Vedansh Agrawal's user avatar