Internet Port Scanning
Discussions center on port scanning tools like Shodan, Nmap, and Masscan for scanning the entire internet or large IP ranges to detect open ports and vulnerabilities, including comparisons, usage tips, and legal concerns.
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Yes, I'm sure they're just scanning for vulnerabilities ...
Nice! Just curious, isn't this achievable with other tools like nmap?
Today shodan.io does the portscanning for you.
From the tool's description:"This is an Internet-scale port scanner. It can scan the entire Internet in under 6 minutes, transmitting 10 million packets per second, from a single machine."Then it seems that it has a link to its github page by default in the User-Agent string it uses while scanning.When you do that you can only get abuse in return, can't you?
Shodan is basically a port scan of the entire internet
For years I've been using the grc.com port scan, it always served me well :)
Pentester: I'll use mass scan, someone else already solved this problem. https://github.com/robertdavidgraham/masscan
Any port scanner will tell you this.
Perform a large-scale scans using Nmap! Allows you to use Masscan to scan targets and execute Nmap on detected ports with custom settings. Generates a standard Nmap XML report. :)
nmap is too aggressive. It's a prelude to actual hacking attempts and labeled by IDS systems as such. Don't use it for this or you may end up in legal trouble.