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32 .Nd initial configuration for packet filter
36 file is used as initial configuration for the
39 This file is loaded before the network is configured by the
43 Its purpose is to protect the machine from possible attacks between
44 the network configuration and the loading of the final ruleset.
46 The syntax of this file is described in
49 Note that at the stage the configuration is loaded, the network
50 interface(s) do not have an IP address yet, so you
52 use rules that derive addresses from an interface (for example:
53 .Dq pass out from any to fxp0 ) .
55 .Bl -tag -width "/etc/defaults/pf.boot.conf" -compact
56 .It Pa /etc/defaults/pf.boot.conf
57 Default initial ruleset file.
58 .It Pa /etc/pf.boot.conf
59 Override of the default initial ruleset file.
62 When using NFS (e.g. diskless situations), you'll also need the following
63 rules in addition to the default rules to unblock NFS:
64 .Bd -literal -offset indent
66 pass in proto udp from any port { 111, 2049 } to any
67 pass out proto udp from any to any port { 111, 2049 }