Configuration Example:

service { upnp2 { acl { rule 1 { action allow external-port 1024-65535 local-port 0-65535 subnet 192.168.199.0/24 } rule 2 { action allow external-port 1024-65535 local-port 0-65535 subnet 192.168.5.121/32 } rule 3 { action deny external-port 1024-65535 local-port 0-65535 subnet 192.168.0.0/16 } } listen-on eth1 nat-pmp enable secure-mode enable wan eth0 } }

Looks like it is compatible with Synology DSM 7.