Host OS: Ubuntu 16.04.5 LTS
Started with bare OS, installed Quickbox, configured rTorrent and used for a couple days. SSH’d into box, installed CSF, lost SSH connection but accessed the WebUI for CSF. Whitelisted my IP and was able to SSH back. Found existing torrents lost connection and new ones would not communicate with tracker. Rebooted host, same issue. Tested by running
csf -x and issues with rTorrent no longer occurred. Please advise on how to proceed with permitting traffic.