Juniper SSG Series The Juniper SSG Series (Security Service Gateway) is a security gateway designed for small branch office and standalone businesses looking to protect themselves from both internal and external attacks. Juniper SSG-Series SSG140 SSG20 SSG320M SSG350M SSG5 SSG520M SSG550M SSG Series spares and accessories Optics and cables Do you need optics or cables? We can help you with that! Send us an email, give us a call, ask us on Livechat or check our webshop!