The current network settings on atpnuc004 are documented here.

network devices (see 'interfaces' in the attachment)
eno1 - 140.181.90.221 - GSI-network
usb_eth0 - 192.168.0.1 - ESR-network

port forwarding (see 'interfaces' in the attachment):
telnet to PowerNodes {GSI: atpnuc004:992[0-3] - ESR: 192.168.0.2[0-3]:23}