4 diff -u pppd/pppd.8:1.1.1.5 pppd/pppd.8:1.25
5 --- pppd/pppd.8:1.1.1.5 Tue Aug 24 13:25:40 1999
6 +++ pppd/pppd.8 Tue Aug 24 19:07:45 1999
8 4.4BSD and NetBSD, any speed can be specified. Other systems
9 (e.g. SunOS) allow only a limited set of speeds.
11 +.B active-filter-in \fIfilter-expression
13 +.B active-filter-out \fIfilter-expression
14 +Specifies an incoming and outgoing packet filter to be applied to data
15 +packets to determine which packets are to be regarded as link activity,
16 +and therefore reset the idle timer, or cause the link to be brought up
17 +in demand-dialling mode. This option is useful in conjunction with the
18 +\fBidle\fR option if there are packets being sent or received
19 +regularly over the link (for example, routing information packets)
20 +which would otherwise prevent the link from ever appearing to be idle.
21 +The \fIfilter-expression\fR syntax is as described for tcpdump(8),
22 +except that qualifiers which are inappropriate for a PPP link, such as
23 +\fBether\fR and \fBarp\fR, are not permitted. Generally the filter
24 +expression should be enclosed in single-quotes to prevent whitespace
25 +in the expression from being interpreted by the shell. This option
26 +is currently only available under NetBSD, and then only
27 +if both the kernel and pppd were compiled with PPP_FILTER defined.
30 Set the async character map to <map>. This map describes which
31 control characters cannot be successfully received over the serial
33 seconds. The link is idle when no data packets (i.e. IP packets) are
34 being sent or received. Note: it is not advisable to use this option
35 with the \fIpersist\fR option without the \fIdemand\fR option.
36 -If the \fBactive-filter\fR
37 -option is given, data packets which are rejected by the specified
38 +If the \fBactive-filter-in\fR and/or \fBactive-filter-out\fR
39 +options are given, data packets which are rejected by the specified
40 activity filter also count as the link being idle.
45 Set the maximum time that pppd will wait for the peer to authenticate
46 itself with PAP to \fIn\fR seconds (0 means no limit).
48 +.B pass-filter-in \fIfilter-expression
50 -.B pass-filter \fIfilter-expression
51 -Specifies a packet filter to applied to data packets being sent or
52 -received to determine which packets should be allowed to pass.
53 -Packets which are rejected by the filter are silently discarded. This
54 -option can be used to prevent specific network daemons (such as
55 -routed) using up link bandwidth, or to provide a basic firewall
56 +.B pass-filter-out \fIfilter-expression
57 +Specifies an incoming and outgoing packet filter to applied to data
58 +packets being sent or received to determine which packets should be
59 +allowed to pass. Packets which are rejected by the filter are silently
60 +discarded. This option can be used to prevent specific network daemons
61 +(such as routed) using up link bandwidth, or to provide a basic firewall
63 -The \fIfilter-expression\fR syntax is as described for tcpdump(1),
64 +The \fIfilter-expression\fR syntax is as described for tcpdump(8),
65 except that qualifiers which are inappropriate for a PPP link, such as
66 \fBether\fR and \fBarp\fR, are not permitted. Generally the filter
67 expression should be enclosed in single-quotes to prevent whitespace
68 -in the expression from being interpreted by the shell. Note that it
69 -is possible to apply different constraints to incoming and outgoing
70 -packets using the \fBinbound\fR and \fBoutbound\fR qualifiers. This
71 -option is currently only available under NetBSD, and then only if both
72 -the kernel and pppd were compiled with PPP_FILTER defined.
73 +in the expression from being interpreted by the shell. This option is
74 +currently only available under NetBSD, and then only if both the kernel
75 +and pppd were compiled with PPP_FILTER defined.
78 Do not exit after a connection is terminated; instead try to reopen