Di salah satu server client, ssh jumphost menolak untuk terkoneksi. Dengan menggunakan mode verbose (-vvv)
ssh -J tommy@ssh.jaranguda.com root@oracle.jaranguda.com -vvv
kelihat error
debug1: Entering interactive session. debug1: pledge: network debug3: receive packet: type 80 debug1: client_input_global_request: rtype hostkeys-00@openssh.com want_reply 0 debug3: receive packet: type 92 channel 0: open failed: administratively prohibited: open failed debug2: channel_input_open_failure: channel 0: callback start stdio forwarding failed kex_exchange_identification: Connection closed by remote host
login ke SSH Server (/etc/ssh/sshd_config), ubah settingan
AllowTcpForwarding no
menjadi
AllowTcpForwarding yeslalu restart sshd
systemctl restart sshd