You can check if a process listens on a TCP or UDP port with netstat -tuplen. To check whether some ports are accessible from the outside (this is probably what you want) you can use a port scanner like Nmap from another system. Running Nmap on the same host you want to check is quite … Read more
0.Configure Guest OS via Virtualbox as follows. 1.Install telnet use this command in main OS terminal: 2.Edit /etc/inetd.conf in main OS using your favourite file editor with root permission,add this line: 3.Edit /etc/xinetd.conf in main OS,make its content look like following: 4.Use this command to start telnet server in main OS: That was all. By … Read more
The ‘\r’ character is the carriage return, and the carriage return-newline pair is both needed for newline in a network virtual terminal session. From the old telnet specification (RFC 854) (page 11): The sequence “CR LF”, as defined, will cause the NVT to be positioned at the left margin of the next print line (as would, for example, the … Read more
The ‘\r’ character is the carriage return, and the carriage return-newline pair is both needed for newline in a network virtual terminal session. From the old telnet specification (RFC 854) (page 11): The sequence “CR LF”, as defined, will cause the NVT to be positioned at the left margin of the next print line (as would, for example, the … Read more
The ‘\r’ character is the carriage return, and the carriage return-newline pair is both needed for newline in a network virtual terminal session. From the old telnet specification (RFC 854) (page 11): The sequence “CR LF”, as defined, will cause the NVT to be positioned at the left margin of the next print line (as would, for example, the … Read more