HSI/HTAR: put: Error -5 on transfer
First, check your firewall settings, and ensure that there are no firewall rules interfering with connecting to Fortress. For firewall configuration, please see "Do I need to do anything to my firewall to access Fortress?" If firewalls are not responsible:
Open the file named /etc/hosts on your workstation, especially if you run a Debian or Ubuntu Linux distribution. Look for a line like:
127.0.1.1 hostname.dept.purdue.edu hostname
Replace the IP address 127.0.1.1 with the real IP address for your system. If you don't know your IP address, you can find it with the command:
host `hostname --fqdn`