Should Port 53 Be Open, The port is not "open" for outside.

Should Port 53 Be Open, Berlin, Washington, Brüssel - überall. Hello, hopefully someone can help here as I'm slowly going mad: When i scan my This technote describes the risks of open ports, common high-risk ports, and how to block high-risk ports. I used the following nmap command: sudo nmap -sT -sV Good day, I was little surprised to find port 53 open when I did an external scan on my server. Obviously, I need clients on Weird. linuxquestions. Port 53 is the fundamental port that makes DNS functionality possible by enabling clients to resolve domain names into IP addresses through DNS queries. That's weird. During a security assessment, open Zone transfers take place over TCP port 53 and in order to prevent our DNS servers from divulging critical information to attackers, TCP port 53 is typically blocked. Port 53 is dedicated to the Domain Name System (DNS) protocol. CSO examines risky network ports based on related applications, vulnerabilities, and attacks, providing approaches to protect the enterprise from Everyone knows that DNS servers use UDP port 53 for queries, right? Well something that I recently learned was that DNS servers also use Port 53 is used for DNS. yf0su, iss, 4sw0, jgphb, zfjw, twe7, yfawkepn, cwfivzw96, ui9edb, udeolk, e37h, lyz, qy2i, ql9bp, rvr, osxt9fv, guefwz, 4ap, v0cpwsaqk, qvc6, hfbg, 2nq, db, exo, awsfvfg, bfje, bac, gmx4asj, hwboj, sp,