I'm trying to backup a new hardened Window 2003 VM on the DMZ and have opened these ports. There are no firewall restrictions between Veeam, ESX hosts, and targets. Backup jobs seem to work, but I'm receiving an error:"In case of using VSS, Veeam Backup & Replication 4.1 uses NetBIOS (TCP port 139, UDP ports 137, 138), SMB (TCP port 445) and RPC (TCP port 135) protocol connections from the console to guest VM additionally."
Interestingly, the firewall is logging & denying attempts to high ports (one job was TCP 1862, the next was TCP 1866), as well as IGMP traffic.RPC function call failed. Function name: [Unfreeze]. Target machine: [<redacted>].
RPC error:The RPC server is unavailable.
Am I missing something? Thanks