/ http://www.slideshare.net/images/logo.gif / 際際滷Share feed for 際際滷shows by User: gatestone https://cdn.slidesharecdn.com/profile-photo-gatestone-48x48.jpg?cb=1591841614 Programming, TCP/IP, Unix/Linux, networking Cisco style, GSM/UMTS network technology, teaching, technical security Specialties: Plan 9