Before creating a stateless firewall filter and applying it to an interface, determine what you want the firewall filter to accomplish and how to use its match conditions and actions to achieve your goal. Also, make sure you understand how packets are matched and the default action of the resulting firewall filter.
Caution: If a packet does not match any terms in a stateless firewall filter rule, the packet is discarded. Take care that you do not configure a firewall filter that prevents you from accessing the Services Router after you commit the configuration. For example, if you configure a firewall filter that does not match HTTP or HTTPS packets, you cannot access the router with the J-Web interface.
To configure a stateless firewall filter, determine the following:
For more information about what a stateless firewall filter can include, see Stateless Firewall Filter Match Conditions. For more information about stateless firewall filters, see the JUNOS Policy Framework Configuration Guide.