Editing Systems Network Architecture (section)

==Security==
{{Blockquote|SNA at its core was designed with the ability to wrap different layers of connections with a blanket of security. To communicate within an SNA environment you would first have to connect to a node and establish and maintain a link connection into the network. You then have to negotiate a proper session and then handle the flows within the session itself. At each level there are different security controls that can govern the connections and protect the session information.<ref>{{cite book |last1=Buecker |first1=Axel |display-authors=et.al. |title=Reduce Risk and Improve Security on IBM Mainframes: Volume 2 Mainframe Communication and Networking Security |publisher=IBM Corporation |isbn=978-0738440941 |page=132 |date=2015 |url=https://books.google.com/books?id=ok2dCgAAQBAJ&pg=PA132 |access-date=April 23, 2019}}</ref>}}