Eicon Networks S92 Manuel d'utilisateur télécharger pdf (Page 127)

YuChakTinMichael‘sGIACGCFWProjectAssignment

Page 127

PPTP inputpacketfiltersareconfiguredontheadapterthatisonthesideof the

Internet(192.168.6.2).

Thisinterface’sInputFiltersshouldbeconfiguredsothat thefilteractionissetto

Dropallpacketsexceptthosethatmeetthecriteriabelow:

n DestinationIPaddressoftheVPNserver'sInternetinterface(192.168.6.2),

subnetmaskof255.255.255.255,andTCPdestinationportof1723.Thisallows

PPTPtunnelmaintenancetrafficfromthePPTPclientstothePPTPserver.

n DestinationIP addressoftheVPNserver'sInternetinterface(192.168.6.2),

subnetmaskof255.255.255.255,andIPProtocolIDof47.Thisfilterallows

PPTPtunneleddatafromthePPTPclientstothePPTPserver.

Donotuse“TCP[established]”astheporttype.ThisfilterisrequiredonlyiftheVPN

serverisactingasaVPNclient(acallingrouter)inaroutertorouterVPNconnection

inwhichtrafficisacceptedonlyiftheVPNserverinitiatedtheTCPconnection.

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Eicon Networks S92 Manuel d'utilisateur Page 127