OpenNHRP implements the NBMA Next Hop Resolution Protocol (as defined in RFC 2332). It makes it possible to create a dynamic multipoint VPN Linux router using NHRP, GRE, and IPsec. It aims to be Cisco DMVPN compatible.
| Tags | Networking Security Internet |
|---|---|
| Licenses | MIT License |
| Operating Systems | POSIX Linux |
| Implementation | C |
Recent releases


Release Notes: This release fixes handling of multicast packets by not sending useless traffic indications about them. It also fixes recovery from DNS lookup failure of dynamic-map bindings.


Release Notes: The license has changed to MIT. This release adds minor bugfixes to handle network configuration errors properly (e.g., protocol address routing loops and very low holding times).


Release Notes: This release adds minor fixes for configurations with multiple mgre interfaces.


Release Notes: Minor feature improvements for multiple ISP setups with failover. Memory corruption and memory leaks that occur when acting as NHS (with heavy traffic) have been fixed.


Release Notes: Leaf (re)discovery immediately after reboot was fixed when stale IPsec SAs are still present and IPsec initial-contact notification is expected to flush them.