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

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All ports are unfiltered

I'm currently studying a peneteration/hacking course. I am trying to use nmap against a target to find all the ports that are filtered. I thought if I used an ACK-scan nmap would give me all the ...
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2answers
128 views

What can I do about being heavily port scanned?

I have two devices connected wirelessly to my Linksys router while running Symantec Endpoint Protection on my computer. A few days ago I started using the internet by connecting the cable directly to ...
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2answers
161 views

How to limit source port for accessing blocked website?

My country has a firewall which blocks sites like Facebook, whatsApp etc. However, they use some kind of port blocking, so some important websites for me like Chegg is also getting blocked I think due ...
3
votes
1answer
202 views

Can the windows Remote Procedure Call subsystem be modified from the default without causing Windows 8/8.1/10 to break?

This is a question that personally as a security professional has bugged me for a long time. So, a default Windows installation, from XP up to 10, typically has a few services listening on the ...
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1answer
37 views

Samba open ports, not being filtered

nmap scan of my ubuntu computer, output when ran with -sV: 139/tcp open netbios-ssn Samba smbd 3.X (workgroup: MEDIAPC) 445/tcp open netbios-ssn Samba smbd 3.X (workgroup: ...
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1answer
63 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 ...
1
vote
0answers
41 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 ...
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0answers
26 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 ...