What does it mean that telnet uses port 23? [closed]
It means that the standard port assigned to telnet is 23. It is the default port. If you install a telnet server with a default configuration it will listen to port 23. Accordingly if you use a telnet client …
Close Port 23 - Dell
2020年9月14日 · Close Port 23 Hi everyone, I have a Dell Powerconnect 6224, we have a security rule to diable all telnet protocols, the issue is I disabled the telnet on that switch put …
What is the purpose of port 23 on a computer? - Answers
2023年10月4日 · Port 23 is a TCP port traditionally assigned to a telnet daemon. Telnet is a simple protocol used a long time ago for a computer to log into a Unix server or mainframe. …
tcp - Ping port number? - Network Engineering Stack Exchange
2023年12月15日 · Port 7 (both TCP and UDP) is used for the "echo" service. If this service is available on a computer, UDP port 7 could be used instead of ICMP to perform a "ping". …
PowerConnect 2824 SFP Ports Not Working - Dell
2015年1月8日 · Of course, we need it to work on the new switch alone. When we use port 23 on the new switch connected to the fiber directly via the SFP module, port 23 switches to fiber …
How to know whether a protocol uses TCP or UDP
IANA maintains the registry for port numbers (be warned, it is currently 138 pages): Service Name and Transport Protocol Port Number Registry. An application layer protocol is free to use any …
Closing telnet port (23) - Dell
2004年4月30日 · Have done some port scans and it seems I have an open port, (23). Have contacted online techs for Linksy and keep getting conflicting info. One says it should be …
What layer of the OSI model deals with ports?
2015年3月2日 · Port definition is done in the diaogue establishment process. In the TCP/IP model, Layers 5,6 and 7 of the OSI model are included into one Layer (Layer 4 of the TCP/IP …
powerconnect 2824 vlan trunking - Dell
2011年2月17日 · tag as U port 1-10. tag as T port 23. set to vlan3. tag as U port 11-20. tag as T port 23. go to vlan port setting. for port 1 - 10 set the PVID to 2. for port 11-20 set the pvid to 3. …
Do I need to open any other outbound ports for Telnet?
The telnet protocol (RFC 854) uses port 23 by default. On the other hand, the "telnet" program installed on computers can be used to connect to any TCP port on the remote host. "telnet …