I'm currently using a Linux (Fedora) VM to re-export a specific NFSv4 export as NFSv2 (for old UNIXes) and also using Samba to export it basically as SMB 1 for old DOS clients. I have to recompile the linux kernel to even enable NFS v2 and if not already, it will be entirely removed from the kernel. I guess it could set up a specific version and never touch it as security is not really a concern, but I was also wondering whether anyone knew whether say OpenBSD, NetBSD, FreeBSD etc is maintaining support for NFS 2? It's not entirely clear and I thought I might ask before experimenting, to save some time.