1 .\"$Id: faillog.8,v 1.10 2001/01/27 02:55:52 kloczek Exp $
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32 faillog \- examine faillog and set login failure limits
35 \fBfaillog\fR [\fB-u\fR \fIlogin-name\fR] [\fB-a\fR] [\fB-t\fR \fIdays\fR]
36 [\fB-m\fR \fImax\fR] [\fB-pr\fR]
38 \fBfaillog\fR formats the contents of the failure log,
39 \fI/var/log/faillog\fR, and maintains failure counts and
41 The order of the arguments to \fBfaillog\fR is significant.
42 Each argument is processed immediately in the order given.
44 The \fB-p\fR flag causes failure entries to be printed in UID
46 Entering \fB-u \fIlogin-name\fR flag will
47 cause the failure record for \fIlogin-name\fR only to be printed.
48 Entering \fB-t \fIdays\fR will cause only the
49 failures more recent than \fIdays\fR to be printed.
50 The \fB-t\fR flag overrides the use of \fB-u\fR.
51 The \fB-a\fR flag causes all users to be selected.
52 When used with the \fB-p\fR flag, this option selects all users
53 who have ever had a login failure.
54 It is meaningless with the \fB-r\fR flag.
56 The \fB-r\fR flag is used to reset the count of login failures.
57 Write access to \fI/var/log/faillog\fR is required for
59 Entering \fB-u \fIlogin-name\fR will cause only the failure count
60 for \fIlogin-name\fR to be reset.
62 The \fB-m\fR flag is used to set the maximum number of login
63 failures before the account is disabled.
64 Write access to \fI/var/log/faillog\fR is required for this
66 Entering \fB-m \fImax\fR will cause all accounts to be disabled
67 after \fImax\fR failed logins occur.
68 This may be modified with \fB-u \fIlogin-name\fR to limit this
69 function to \fIlogin-name\fR only.
70 Selecting a \fImax\fR value of 0 has the effect of not placing
71 a limit on the number of failed logins.
72 The maximum failure count
73 should always be 0 for \fBroot\fR to prevent
74 a denial of services attack against the system.
76 Options may be combined in virtually any fashion.
77 Each \fB-p\fR, \fB-r\fR, and \fB-m\fR option will cause
78 immediate execution using any \fB-u\fR or \fB-t\fR modifier.
80 \fBfaillog\fR only prints out users with no successful login since
82 To print out a user who has had a successful login since their last
83 failure, you must explicitly request the user with the \fB-u\fR flag,
84 or print out all users with the \fB-a\fR flag.
86 Some systems may replace /var/log with /var/adm or /usr/adm.
88 /var/log/faillog \- failure logging file
93 Julianne Frances Haugh (jockgrrl@ix.netcom.com)