SNMP security and administration encryption:DES-encrypt SNMP message authentication:compute,send MIC(m,k): compute hash (MIC)over message (m), secret shared key (k) protection against playback:use nonce view-based access control o SNMP entity maintains database of access rights,policies for various users o database itself accessible as managed object! Network Management 9-18Network Management 9-18 SNMP security and administration  encryption: DES-encrypt SNMP message  authentication: compute, send MIC(m,k): compute hash (MIC) over message (m), secret shared key (k)  protection against playback: use nonce  view-based access control  SNMP entity maintains database of access rights, policies for various users  database itself accessible as managed object!