The Port and Protocol component also provides a count of vulnerabilities by severity level, adding active and passive vulnerability results by TCP and UDP protocol. Port ranges from 0-1024, covering all Well Known Ports, along with severity levels of low, medium, high, and critical, are displayed.
a. Scans for vulnerabilities in the information system and hosted applications [Assignment: organization-defined frequency and/or randomly in accordance with organization-defined process] and when new vulnerabilities potentially affecting the system/applications are identified and reported; b I'm seeing a lot of attempts to make TCP connections to port 53 on my home server, similar to the following: IP[Src=184.108.40.206 Dst=220.127.116.11 TCP spo=12801 dpo=00053] The Source IP and I don't see why port 53 needs to be open unless you're a DNS server. It's not how DNS works, and I don't think TCP on port 53 is necessary at all. – Karthik Rangarajan Jan 3 '14 at 23:02 I know I can change the DNS settings to route them to OPENDNS servers (18.104.22.168) but was just wondering if blocking port 53 would be a complicated process or if the guide would work. Message 1 of 3
TCP/UDP port 53 for DNS offers an exit strategy. Once criminal hackers inside the network have their prize, all they need to do to get it out the door is use readily available software that turns
As we witnessed with the dhcpserver port on Felix, certain open UDP services can hide even from Nmap version detection. He has also only scanned the default ports so far, there are 64529 others that could possibly be open. For the record, 53 is the only open UDP port on Scanme. Sep 17, 2019 · The vast majority of vulnerabilities in ports are found in just three, making it theoretically easier for organizations to defend them against attack, according to Alert Logic. The security vendor analyzed 1.3 petabytes of security data, over 2.8 billion IDS events, 8.2 million verified incidents, and common vulnerabilities for more than 700
Oct 04, 2015 · From the reading I did it appears that tcp on port 53 is a security risk because hackers can perform zone transfers and map out information which they should probably not be allowed (still a little unclear exactly how that works) - which is why tcp is usually blocked by most people, however, it is now starting to be used for things like dnssec