when you connect to the remote server through SSH, bad file number appears

The reason for using openSUSE distribution may be that the server firewall has disabled the SSH service

1) using YaST control center, the setting is very simple. Although the buttons can’t be clicked, the shortcut keys are very convenient（ It’s a graphical interface)

2) search by yourself in other ways

2. after logging in to the server, SSH Chinese garbled

export LC_ ALL=zh_ CN.GBK