I am trying to do an audit of SSL enabled ports/services running on our Linux RHEL 5.3 servers . I am trying to find which ports on our servers are ssl enabled .I am not sure how to find this .I need to know how to check which ports are using ssl enabled services. I have run commands below. lsof -i -n -P netstat -ntulp netstat -nap
Nov 02, 2017 · Commonly used TCP ports For those responsible for configuring and managing web hosting, it’s useful to know the numbers for common services, such as an SSL port. Use the tables below to quickly look up port numbers and their basic functions. By ICANN there are three categories for ports: From 0 to 1023 – well known ports assigned to common protocols and services; From 1024 to 49151 – registered ports assigned by ICANN to a specific service; From 49152 to 65 535 – dynamic (private, high) ports range from 49,152 to 65,535. Can be used by any service on an ad hoc basis. Multiple Common SSL Certificate Ports. Port # Function: 80 HTTP 443 SSL 21 FTP 990 FTPs 22 SFTP / SSH 3306 MySQL Email. Port # Function: 110 POP – Incoming 995 Apr 22, 2019 · Find the most common port numbers below. Hosts have a tendency to block some of them. Contact your host or read their documentation to make sure which ports they use. Common SMTP ports: SMTP - port 25 or 2525 or 587; Secure SMTP (SSL / TLS) - port 465 or 25 or 587, 2526 (Elastic Email) Automate bounce handling (Premium users): POP3 - port 110 Again, just like the previous two entries, FTP over TLS/SSL uses the FTP protocol which is then secured using either SSL or TLS. Summary While it may seem obvious that there are large number of ports that are missing from this list, the purpose here was to just cover the most commonly seen and used protocols. Common ports, such as TCP port 80 (HTTP), may be locked down — but other ports may get overlooked and be vulnerable to hackers. In your security tests, be sure to check these commonly hacked TCP and UDP ports: TCP port 21 — FTP (File Transfer Protocol) TCP port 22 — SSH (Secure Shell) TCP […]
acl SSL_ports port 443 http_access deny CONNECT !SSL_ports By default, it only allows CONNECT (which is what's used for HTTPS connections in a proxy) on port 443. Similarly, for TinyProxy: ConnectPort 443 ConnectPort 563 (and I wouldn't rely on port 563 generally speaking for an HTTPS server, it's for NNTPS anyway.) Your other options are:
Yes, a single SSL server certificate can cover multiple ports for the same domain name. As an example, the certificate for myserver.mydomain.com will work for: https://myserver.mydomain.com; and; https://myserver.mydomain.com:8888; A specific port number should not be specified in the CN (Common Name) field. Note that there are some networks (especially some free WiFi access points) that don't allow traffic over other ports than 443 or 80; which means that using a port other than 443, though perfectly standard and supported, may imply some practical usage restrictions. Jun 11, 2020 · The purpose was to establish a port for SMTP to operate using Secure Sockets Layer (SSL). SSL is commonly used for encrypting communications over the internet. The port was assigned for about one year when it was revoked in support of securing SMTP communications using Transport Layer Security (TLS). May 15, 2020 · Common SMTP Ports. Here are some of the most common SMTP Ports you should know about, namely Port 25, Port 465, 587-Port 25. Port 25 is the oldest port. Request for Comments (RFC) 821 was published in 1982 when the University of Southern California submitted a proposal to the Internet Engineering Task Force (IETF), which established port 25 as
Common ports, such as TCP port 80 (HTTP), may be locked down — but other ports may get overlooked and be vulnerable to hackers. In your security tests, be sure to check these commonly hacked TCP and UDP ports: TCP port 21 — FTP (File Transfer Protocol) TCP port 22 — SSH (Secure Shell) TCP […]
Common ports, such as TCP port 80 (HTTP), may be locked down — but other ports may get overlooked and be vulnerable to hackers. In your security tests, be sure to check these commonly hacked TCP and UDP ports: TCP port 21 — FTP (File Transfer Protocol) TCP port 22 — SSH (Secure Shell) TCP […] COMMON PORTS packetlife.net TCP/UDP Port Numbers 7 Echo 19 Chargen 20-21 FTP 22 SSH/SCP 23 Telnet 25 SMTP 42 WINS Replication 43 WHOIS 49 TACACS 53 DNS 67-68 DHCP/BOOTP 69 TFTP 70 Gopher 79 Finger 80 HTTP Ports from 1024 on are freely useable. As an example, you could use port 30443 for SSL VPN if your VPN gateway supports port reassignment and the SSL VPN client (if any) does this as well. If you access SSL VPN via web portal you can add the custom port number in the URL like this: " https://mysslvpnserver.com:30443 ".