How to connect to other hosts remotely in Linux

Linux connects to other Linux hosts

# ftp连接
ftp <ip>

# telnet连接
telnet <ip>

#ssh远程连接
ssh -p <port> <username>@<ip>

Linux connects to other Windows hosts

# 使用xfreerdp工具
xfreerdp /u:<username> /p:<password> /v:<ip>