Consider the following about network requirements:
- Veeam Agent must be able to establish a direct IP connection to the Veeam Backup & Replication server. Thus, Veeam Agent cannot work with Veeam Backup & Replication that is located behind the NAT gateway.
- For communication between Veeam backup infrastructure and computers you want to back up, one of the following authentication protocols is required:
- Windows New Technology LAN Manager (NTLM)
Veeam products support the Kerberos authentication protocol and IPv6 addresses starting from the following versions:
Veeam Backup & Replication 12.0 and later will not be able to use the Kerberos authentication protocol and IPv6 addresses to communicate with earlier versions of Veeam Agents. To start using these features, upgrade Veeam Agents. To learn more, see Upgrading Veeam Agent.
To learn more about new features see the following sections of the Veeam Backup & Replication User Guide:
- Domain names of all managed servers added to the Veeam backup infrastructure and computers you want to back up must be resolvable into IPv4 or IPv6 addresses.
Keep in mind that for Veeam Agent computers that are included in a protection group for pre-installed Veeam Agents, only Veeam Backup & Replication server must be resolvable into IPv4 or IPv6 address.