The following limitations apply when using this service:
Deep Packet Inspection (DPI) is not supported
The firewall service is available only for dedicated servers
A server cannot be added to the firewall if it:
is already assigned to another firewall
belongs to an L2 segment in native mode
is configured without a public network
Each rule can include up to 1,000 addresses
IPv6 support is not available at this time
The service is available in specific locations only
Limited compatibility with L2 segments (refer to the L2 segment compatibility section)