The following command does a port scanning on the target $203\mathrm{.}0\mathrm{.}113\mathrm{.}100$:

nmap $203\mathrm{.}0\mathrm{.}113\mathrm{.}100-$p all ports

nmap $203\mathrm{.}0\mathrm{.}113\mathrm{.}100$

telnet $203\mathrm{.}0\mathrm{.}113\mathrm{.}100$

nc $203\mathrm{.}0\mathrm{.}113\mathrm{.}100$