Fulcrum v1.12.0 has just been released, which adds UPnP support for Fulcrum. This allows automatic port mapping for installs behind NAT firewalls. Enable with --upnp from the CLI or upnp=true in the conf file.
In addition, the bitcoind ZMQ hashtx message is now supported (if configured on the bitcoind side, also needs to be enabled on the Fulcrum side with conf arg: zmq_allow_hashtx=true).
Also included in this release are some mempool-related performance improvements and some internal code quality improvements. See the release notes for full details and download this release.
As usual we recommend all users to upgrade to the latest version when available.