Enterasys Enterasys SecureStack B2 B2G124-24 Especificaciones Pagina 206

  • Descarga
  • Añadir a mis manuales
  • Imprimir
  • Pagina
    / 600
  • Tabla de contenidos
  • MARCADORES
  • Valorado. / 5. Basado en revisión del cliente
Vista de pagina 205
SNMP Configuration Summary
8-2 SNMP Configuration
•SNMPnetworkmanagementapplications,suchastheEnterasysNetSightapplication,which
communicatewithagentstogetstatisticsandalertsfromthemanageddevices.
SNMPv3
SNMPv3isaninteroperablestandardsbasedprotocolthatprovidessecureaccesstodevicesby
authenticatingandencryptingframesoverthenetwork.Theadvancedsecurityfeaturesprovided
inSNMPv3areasfollows:
MessageintegrityCollects datasecurel ywithoutbeing tamperedwithorcorrupted.
AuthenticationDeterminesthemessageisfroma
validsource.
–EncryptionScramblesthecontentsofaframetopreventitfrombeingseenbyan
unauthorizedsource.
UnlikeSNMPv1andSNMPv2c,inSNMPv3,theconceptofSNMPagentsandSNMPmanagersno
longerapply.TheseconceptshavebeencombinedintoanSNMPentity.AnSNMPentity consists
ofanSNMPengineandSNMPapplications.AnSNMPengineconsistsofthefollowingfour
components:
•DispatcherThiscomponentsendsandreceivesmessages.
•MessageprocessingsubsystemThiscomponentacceptsoutgoingPDUsfromthe
dispatcherandpreparesthemfortransmissionbywrappingtheminamessageheaderand
returningthem
tothedispatcher.Themessageprocessingsubsystemalsoacceptsincoming
messagesfromthedispatcher,processeseachmessageheader,andreturnstheenclosedPDU
tothedispatcher.
•SecuritysubsystemThiscomponentauthenticatesandencryptsmessages.
AccesscontrolsubsystemThiscomponentdetermineswhichusersandwhichoperations
areallowedaccessto
managedobjects.
About SNMP Security Models and Levels
AnSNMPsecuritymodelisanauthenticationstrategythatissetupforauserandthegroupin
whichtheuserresides.Asecuritylevelisthepermittedlevelofsecuritywithinasecuritymodel.
ThethreelevelsofSNMPsecurityare:Noauthenticationrequired(NoAuthNoPriv);
authenticationrequired(AuthNoPriv);and
privacy(authPriv).Acombinationofasecuritymodel
andasecurityleveldetermineswhichsecuritymechanismisemployedwhenhandlinganSNMP
frame.Table 813identifiesthelevelsofSNMPsecurityavailableonSecureStackB2devicesand
authenticationrequiredwithineachmodel.
Table 8-13 SNMP Security Levels
Model Security Level Authentication Encryption How It Works
v1 NoAuthNoPriv Community string None Uses a community string match for
authentication.
v2c NoAuthNoPriv Community string None Uses a community string match for
authentication.
Vista de pagina 205
1 2 ... 201 202 203 204 205 206 207 208 209 210 211 ... 599 600

Comentarios a estos manuales

Sin comentarios