Cisco 7604 Configuration Guide - Page 716

Glossary PIM PIM-SM Ping PIX PKCS12 PNS Policy NAT POP Pool Port PPP PPTP PPTP GRE PPTP GRE tunnel PPTP session Protocol Independent Multicast. PIM provides a scalable method for determining the best paths for distributing a specific multicast transmission to a group of hosts. Each host has registered using IGMP to receive the transmission. See also PIM-SM. Protocol Independent Multicast-Sparse Mode. With PIM-SM, which is the default for Cisco routers, when the source of a multicast transmission begins broadcasting, the traffic is forwarded from one MC router to the next, until the packets reach every registered host. See also PIM. An ICMP request sent by a host to determine if a second host is accessible. Private Internet eXchange. The Cisco PIX 500-series FWSMs range from compact, plug-and-play desktop models for small/home offices to carrier-class gigabit models for the most demanding enterprise and service provider environments. Cisco PIX FWSMs provide robust, enterprise-class integrated network security services to create a strong multilayered defense for fast changing network environments. A standard for the transfer of PKI-related data, such as private keys, certificates, and other data. Devices supporting this standard let administrators maintain a single set of personal identity information. PPTP Network Server. A PNS is envisioned to operate on general-purpose computing/server platforms. The PNS handles the server side of PPTP. Because PPTP relies completely on TCP/IP and is independent of the interface hardware, the PNS may use any combination of IP interface hardware including LAN and WAN devices. Lets you identify local traffic for address translation by specifying the source and destination addresses (or ports) in an access list. Post Office Protocol. Protocol that client e-mail applications use to retrieve mail from a mail server. See IP pool. A field in the packet headers of TCP and UDP protocols that identifies the higher level service which is the source or destination of the packet. Point-to-Point Protocol. Developed for dial-up ISP access using analog phone lines and modems. Point-to-Point Tunneling Protocol. PPTP was introduced by Microsoft to provide secure remote access to Windows networks; however, because it is vulnerable to attack, PPTP is commonly used only when stronger security methods are not available or are not required. PPTP Ports are pptp, 1723/tcp, 1723/udp, and pptp. For more information about PPTP, see RFC 2637. See also PAC, PPTP GRE, PPTP GRE tunnel, PNS, PPTP session, and PPTP TCP. Version 1 of GRE for encapsulating PPP traffic. A tunnel defined by a PNS-PAC pair. The tunnel protocol is defined by a modified version of GRE. The tunnel carries PPP datagrams between the PAC and the PNS. Many sessions are multiplexed on a single tunnel. A control connection operating over TCP controls the establishment, release, and maintenance of sessions and of the tunnel itself. PPTP is connection-oriented. The PNS and PAC maintain state for each user that is attached to a PAC. A session is created when end-to-end PPP connection is attempted between a dial user and the PNS. The datagrams related to a session are sent over the tunnel between the PAC and PNS. GL-14 Catalyst 6500 Series Switch and Cisco 7600 Series Router Firewall Services Module Configuration Guide using ASDM OL-20748-01