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Standard Firewall Filter Terminating Actions

Standard stateless firewall filters support different sets of terminating actions for each protocol family.

Note: You cannot configure the next term action with a terminating action in the same filter term. However, you can configure the next term action with another nonterminating action in the same filter term.

Table 1 describes the terminating actions you can specify in a standard firewall filter term.

Table 1: Terminating Actions for Standard Firewall Filters

Terminating Action

Description

Protocols

accept

Accept the packet.

  • family any
  • family inet
  • family inet6
  • family mpls
  • family vpls
  • family ccc
  • family bridge

discard

Discard a packet silently, without sending an Internet Control Message Protocol (ICMP) message. Discarded packets are available for logging and sampling.

  • family any
  • family inet
  • family inet6
  • family mpls
  • family vpls
  • family ccc
  • family bridge

logical-system logical-system-name

Direct the packet to the specified logical system.

Note: This action is not supported on PTX series packet transport switches.

  • family inet
  • family inet6

reject message-type

Reject the packet and return an ICMPv4 or ICMPv6 message:

  • If no message-type is specified, a destination unreachable message is returned by default.
  • If tcp-reset is specified as the message-type, tcp-reset is returned only if the packet is a TCP packet. Otherwise, the administratively-prohibited message, which has a value of 13, is returned.
  • If any other message-type is specified, that message is returned.

Note: Rejected packets can be sampled or logged if you configure the sample or syslog action.

The message-type can be one of the following values: address-unreachable, administratively-prohibited, bad-host-tos, bad-network-tos, beyond-scope, fragmentation-needed, host-prohibited, host-unknown, host-unreachable, network-prohibited, network-unknown, network-unreachable, no-route, port-unreachable, precedence-cutoff, precedence-violation, protocol-unreachable, source-host-isolated, source-route-failed, or tcp-reset.

  • family inet
  • family inet6

routing-instance routing-instance-name

Direct the packet to the specified routing instance.

Note: This action is not supported on PTX series packet transport switches.

  • family inet
  • family inet6

topology topology-name

Direct the packet to the specified topology.

Note: This action is not supported on PTX series packet transport switches.

Each routing instance (master or virtual-router) supports one default topology to which all forwarding classes are forwarded. For Multitopology Routing, you can configure a firewall filter on the ingress interface to match a specific forwarding class, such as expedited forwarding, with a specific topology. The traffic that matches the specified forwarding class is then added to the routing table for that topology.

  • family inet
  • family inet6

Published: 2013-02-21