Abstract: A method and apparatus for securing an optical fiber to a structure and an appropriate strain relief boot to the optical fiber as well as to the structure is disclosed. A channel is formed proximate to an opening in a wall surface of the structure. The fiber is inserted into a passage in a compressible ferrule sized to accommodate the fiber and having a lip around its body and a strain relief boot is slid over one longitudinal end of the fiber to cover the lip. The ferrule and boot are inserted into a channel sized to accommodate the ferrule in a friction fit. The ferrule is cylindrical in shape and has one or more passages through it, aligned along the longitudinal axis of the cylinder. A slot extends the length of the ferrule between its outer surface and a passage proximate thereto. Slots may interconnect passages. The diameter along which the slots extend terminate in notches which narrow the ferrule width along this direction.