asked on
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ssh root@host
# ssh -V
OpenSSH_8.3p1 Ubuntu-1~ppa0~20.04.0, OpenSSL 1.1.1j 16 Feb 2021
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Usage:
arping [options] <destination>
Options:
-f quit on first reply
-q be quiet
-b keep on broadcasting, do not unicast
-D duplicate address detection mode
-U unsolicited ARP mode, update your neighbours
-A ARP answer mode, update your neighbours
-V print version and exit
-c <count> how many packets to send
-w <timeout> how long to wait for a reply
-i <interval> set interval between packets (default: 1 second)
-I <device> which ethernet device to use
-s <source> source ip address
<destination> dns name or ip address
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Telnet is an application layer protocol used on the Internet or local area networks to provide a bidirectional interactive text-oriented communication facility using a virtual terminal connection. SSH was designed as a replacement for Telnet and for unsecured remote shell protocols. The term telnet is also used to refer to the software that implements the client part of the protocol. SSH provides a secure channel over an unsecured network in a client-server architecture, connecting an SSH client application with an SSH server.
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(You are adding a new interface on both systems...)