KB2986: Veeam Backup & Replication fails to connect to ...
https://www.veeam.com/kb298613.08.2019 · In most Debian distributions, ports from 2500 to 3300 are opened by default. If connections to the Linux server fail, make sure that Linux OS does not have restrictions for this range of ports. SLES Use the iptables utility to allow connections to the port range 2500–3300:i. iptables -I INPUT -p tcp --dport 2500:3300 -m state --state NEW -j ...