Security gateway
A security gateway is the name chosen by the Federal Office for Information Security (BSI) in the IT-Grundschutz Catalogs that includes all IT systems that ensure IT security in an organization.
This includes one or more topologically sensible firewalls , the operation of screened subnets ( demilitarized zones ) and their server systems with various services that are worth protecting, proxy servers to control the content of the data flow between the Internet and the LAN , and the active network components such as routers and switches , which connect the IT systems in the security gateway with each other via Ethernet .
The servers that are to be reached from the Internet or LAN are then operated in the screened subnets. This can e.g. B. Domain name servers , mail servers , web servers , VPN servers , anti-virus servers (proxyside), load balancers and reverse proxies .
literature
- Klaus-Rainer Müller: IT security with a system. 3rd edition, Friedrich Vieweg & Sohn Verlag, Wiesbaden 2008, ISBN 978-3-8348-0368-9 .
- Andreas Pfitzmann, Alexander Schill, Andreas Westfeld, Gritta Wolf: Multi-sided security in open networks. Friedrich Vieweg & Sohn Verlag, Wiesbaden 2000, ISBN 978-3-322-84954-0 .