The ns_v30_b2_patch_dedicated_server.zip file you have requested: Mods / Multiplayer / Natural Selection / Releases / Patches / Server Patches / Natural Selection v3.0 Bta 2 - Dedicated Server - 10mb is not available. Perhaps try browsing all files for the game Half-Life and upload any files you want to share or are missing. This is the only information we could locate:
Second bta release of the dedicated server files for Natural Selection v3.0. Note: This version is an update. Bta 1 is required to be installed !!!