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9 sty 2017 · When all of your system's ports are stealth (and assuming that your personal firewall security system doesn't make the mistake of "counter-probing" the prober), your system will be completely opaque and invisible to the random scans which continually sweep through the Internet.
7 sie 2006 · For specific information about individual ports, you may access our ports database by clicking on the port numbers appearing in our various online tests.
Is there a way to tell the difference between my ISP blocking traffic on certain ports and my NAT router/firewall blocking that traffic? The sites “ Shields Up ” and “ Can you see me ” show my ports closed or not accessible, but I assume that is primarily due to the NAT router.
It is scanning which ports are open, closed, or 'stealth' as visible from the internet. That is means which ports are visible on the router. Closed ports are generally good, as it means connections/attacks can't be made using them. If you need specific ports for an application you would likely know about it.
ShieldsUP is an online port scanning service created by Steve Gibson of Gibson Research Corporation. The purpose of the utility is to alert the users of any ports that have been opened through their firewalls or through their NAT routers, which can be used by malicious users to take advantage of security vulnerabilities.
27 cze 2018 · Following the advice in Bob Rankin's recent column about blocking open ports, I ran ShieldsUP! and it showing 4 open ports. Using his instructions I created 4 new port blocking rules for Win 10...
27 maj 2021 · If you're testing your local machine (and not routing shields up to your VPN exit point) then what port(s) is/are replying. What port(s) is your VPN using. Most likely you ARE using the VPN for the test, in which case all of the answers above apply.
