9W006 and 9W007 21T HE SMART SWITCH R EMOTE ACCESS M ODULESecurity Overview• AppleTalk Address Resolution Protocol (AARP)• PPP AppleTalk/AppleTalk Control Protocol (ATCP)• Datagram Delivery Protocol (DDP)• Routing Table Maintenance Protocol (RTMP)• AppleTalk Echo Protocol (AEP)• Name Binding Protocol (NBP)• Zone Information Protocol (ZIP)I NTEROPERABILITY DEVICESRemote devices that may connect to the SmartSwitch Remote Access Module include the following:• MAC Layer Bridges• IP Host Devices• IP Router Devices• IPX Routers• AppleTalk RoutersMAC layer bridges connect to the system using the HDLC bridge encapsulation line protocol.These devices send transparently bridged Ethernet frames to the system. MAC layer bridges do notprocess network layer protocols. They forward all packets based on source and destination MACaddresses.IP Host devices are single workstations or PCs that connect to the system at the IP network layer.These devices use either the RFC1294 based protocol or PPP to communicate with the system.IP router devices are single devices that represent many other IP hosts and routers to the system.They must use the CHAP or PAP protocol to identify themselves to the system. IP routers usuallyprovide IP network address information at connection time (and use PPP to send user data to thesystem).IPX routers are single devices that perform network layer tasks (addressing, routing, andswitching) to move packets from one location on the network to another. IPX routers use theInternetwork Packet Exchange (IPX) protocol, typical of the NetWare environment.AppleTalk routers route AppleTalk datagrams based on address information. They support thefollowing protocols: RTMP, NBP, and ZIP.S ECURITY OVERVIEWThe system provides several options for validating remote devices and for managing networksecurity. The security options available are dependent on the remote device type, type of access,and the level of security required.
