12/25/2023 0 Comments Ip scanner portableSMTP is very insecure and if you are not deliberately running a mail server Port 25 - SMTP - This one is the Simple Mail Transfer Protocol. It is insecure and in modern times used to configure routers or other devices via command line interface. Port 23 - Telnet - This is a very old and simple terminal server. Port 21 - FTP - This is the classic file transfer protocol. What are the specific uses for these ports?Ī basic breakdown of what is in the free scan: To everyone on the internet, it may be worthwhile to purchase a proper firewall and take some preventative measures to hide your system from the public. If you do not want your computer system responding However, our scanner is scanning from the public internet, which means if we can see it, so can anyone connected to the internet. It is normal for all computers to have open ports that they respond to as this is the basis for TCP/IP communication, so do not be alarmed in general if you see an open port Port forwarding or possibly an issue with the software using an unusual port that we don't check. If you are installing common server software and trying to test it with the scanner and you get a NO, there could be a firewall issue, an issue with The Internet with no firewall or other obstacle. If our scanner reports back with a YES result, your system is reachable by the public via For example, if you have installedĪpache on your computer and then scanned it, you would probably expect it to respond on port 80 with a YES. If the results of a scan indicate that you have open ports, it means that your computer is responding to network requests at those ports.
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