However, because each port presents a unique sets of threats and vulnerabilities, there was a need to look critically into how Nigeria port operations are being conducted in other to identity the potential threats and vulnerabilities pertaining to the said port.
Rapid7's VulnDB is curated repository of vetted computer software exploits and exploitable vulnerabilities. Quick Cookie Notification This site uses cookies, including for analytics, personalization, and advertising purposes. There is a massive amount of incoming traffic to port 53 to a large number of users on our network. To the point where our normal load to our DNS servers is about 2 or 3Mbps. there is about 150Mbps worth of traffic using that port coming into our customer base. Oct 31, 2019 · Here, we launched a CVE scan against port 8443, but you can query other ports, or the entire site as well. Summary. Nmap’s powerful scripts allow you to not only perform port scanning tasks, but also to discover CVEs in a matter of seconds. Thanks to Nmap, this becomes an easy task, even if you don’t have advanced technical skills. FTP Sharing and Vulnerabilities. Although FTP is widely used, there are a number of vulnerabilities that should be addressed to ensure security. FTP authentication is sent as cleartext, making it easy for someone with a packet sniffer to view usernames and passwords. 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 Fixed source port for generating queries; Some current implementations allocate an arbitrary port at startup (sometimes selected at random) and reuse this source port for all outgoing queries. In some implementations, the source port for outgoing queries is fixed at the traditional assigned DNS server port number, 53/udp.
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
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 In other words, when probing UDP port 53, we don't send in a SQL query, DNS query and then SNMP and wait for a response. The majority of UDP services only reply to a well written query . For UNIX systems being scanned by Nessus with credentials, the " netstat -an " command can be used to enumerate all open ports, including UDP ports. If our port analysis reveals that your system's port 53 is open and listening for incoming traffic, you should determine what's going on. Even though only a few Trojan programs are known to open port 53, the exact behavior of malicious software is a constantly moving target . . . which is why periodic security checkups here are always worthwhile.
Online UDP port scan available for common UDP services. The UDP port scan is part of the IP Tools range of network testing tools. The test uses the excellent Nmap Port Scanner to scan 5 of the most common UDP ports. Ports tested in the quick UDP scan are DNS 53, TFTP 69, NTP 123, SNMP 161, mDNS 5353, UPNP 1900 and Memcached 11211.
By sending specially-crafted DNS packets to TCP port 53, a remote attacker could exploit this vulnerability to cause the device to reload. References: [CVE-2013-5479], [XFDB-87455] haneWIN DNS Server is vulnerable to a denial of service attack. A remote attacker could send a large amount of data to port 53 and cause the server to crash. TCP port 53 can be used in the cases where the DNS responses greater than 512 bytes. Awareness of DNSSEC has increased due to the vulnerabilities disclosed 2 years ago and with recent news 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 In other words, when probing UDP port 53, we don't send in a SQL query, DNS query and then SNMP and wait for a response. The majority of UDP services only reply to a well written query . For UNIX systems being scanned by Nessus with credentials, the " netstat -an " command can be used to enumerate all open ports, including UDP ports. If our port analysis reveals that your system's port 53 is open and listening for incoming traffic, you should determine what's going on. Even though only a few Trojan programs are known to open port 53, the exact behavior of malicious software is a constantly moving target . . . which is why periodic security checkups here are always worthwhile.