Symptoms
The following error occurs when connecting to a remote host using the Transfer Tool:
The system stopped waiting to connect to “192.0.2.0” on port “22” after 15 seconds.
Failed to establish session and parse security token: 599 Internal Exception (Could not
connect to '192.0.2.0:2087': Connection timed out) at
/usr/local/cpanel/3rdparty/perl/530/lib/perl5/cpanel_lib/cPanel/PublicAPI.pm line 526.
Description
This is typically caused by a firewall configuration on the remote host, or the SSH port that was used to connect to the remote host is incorrect.
Workaround
Check the SSH port on the remote host to ensure the port being used in Transfer Tool is corrrect by running the following command via SSH or WHM >> Terminal as root on the remote host:
sshd -T | grep '^port
Example:
# sshd -T | grep '^port'
port 22
Ensure the server can reach the remote host on the remote host SSH port by running one of the following commands via SSH or WHM >> Terminal as root: (Replace $PORT with the remote host SSH port and $IP with the remote host IP address).
nc -vz $IP $PORT
telnet $IP $PORT
Examples:
# nc -vz 192.0.2.0 22
Ncat: Version 7.50 ( https://nmap.org/ncat )
Ncat: Connection timed out.
# telnet 192.0.2.0 22
Trying 192.0.2.0...
telnet: connect to address 192.0.2.0: Connection timed out
If nc or telnet are not installed, you can attempt to SSH to the remote host instead by running the following command via SSH or WHM >> Terminal as root: (Replace $PORT with the remote host SSH port and $IP with the remote host IP address).
ssh -p $PORT root@$IP
If the server is unable to reach the remote host on the configured SSH port, ensure the firewall configuration on the remote host allows connections from the server you are using the Transfer Tool on.