Answer Posted / satyaveer sharma

1 Method: which is generally used is ping command......
ping ip address
2 Method: if your ping command returns 0 packet received...
than we can try by either SSh or telnet command to remotly
login on that server..(use telnet command with port no which
is open using nmap serverip address)
telnet ip-address portno
butsome times in linux administrator can block this service
from outers network.

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