| pflogd.8 (148787) | pflogd.8 (171172) |
|---|---|
| 1.\" $OpenBSD: pflogd.8,v 1.25 2005/01/02 18:15:02 jmc Exp $ | 1.\" $OpenBSD: pflogd.8,v 1.32 2006/12/08 10:26:38 joel Exp $ |
| 2.\" 3.\" Copyright (c) 2001 Can Erkin Acar. All rights reserved. 4.\" 5.\" Redistribution and use in source and binary forms, with or without 6.\" modification, are permitted provided that the following conditions 7.\" are met: 8.\" 1. Redistributions of source code must retain the above copyright 9.\" notice, this list of conditions and the following disclaimer. --- 9 unchanged lines hidden (view full) --- 19.\" IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 20.\" INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 21.\" NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 22.\" DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 23.\" THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 24.\" (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 25.\" THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 26.\" | 2.\" 3.\" Copyright (c) 2001 Can Erkin Acar. All rights reserved. 4.\" 5.\" Redistribution and use in source and binary forms, with or without 6.\" modification, are permitted provided that the following conditions 7.\" are met: 8.\" 1. Redistributions of source code must retain the above copyright 9.\" notice, this list of conditions and the following disclaimer. --- 9 unchanged lines hidden (view full) --- 19.\" IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 20.\" INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 21.\" NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 22.\" DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 23.\" THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 24.\" (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 25.\" THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 26.\" |
| 27.\" $FreeBSD: head/contrib/pf/pflogd/pflogd.8 148787 2005-08-06 13:03:03Z brueffer $ | 27.\" $FreeBSD: head/contrib/pf/pflogd/pflogd.8 171172 2007-07-03 12:30:03Z mlaier $ |
| 28.\" 29.Dd July 9, 2001 30.Dt PFLOGD 8 31.Os 32.Sh NAME 33.Nm pflogd 34.Nd packet filter logging daemon 35.Sh SYNOPSIS 36.Nm pflogd 37.Op Fl Dx 38.Op Fl d Ar delay 39.Op Fl f Ar filename | 28.\" 29.Dd July 9, 2001 30.Dt PFLOGD 8 31.Os 32.Sh NAME 33.Nm pflogd 34.Nd packet filter logging daemon 35.Sh SYNOPSIS 36.Nm pflogd 37.Op Fl Dx 38.Op Fl d Ar delay 39.Op Fl f Ar filename |
| 40.Op Fl i Ar interface |
|
| 40.Op Fl s Ar snaplen 41.Op Ar expression 42.Sh DESCRIPTION 43.Nm 44is a background daemon which reads packets logged by 45.Xr pf 4 | 41.Op Fl s Ar snaplen 42.Op Ar expression 43.Sh DESCRIPTION 44.Nm 45is a background daemon which reads packets logged by 46.Xr pf 4 |
| 46to the packet logging interface 47.Pa pflog0 | 47to a 48.Xr pflog 4 49interface, normally 50.Pa pflog0 , |
| 48and writes the packets to a logfile (normally 49.Pa /var/log/pflog ) 50in 51.Xr tcpdump 1 52binary format. 53These logs can be reviewed later using the 54.Fl r 55option of --- 22 unchanged lines hidden (view full) --- 78If the existing log file was created with a different snaplen, 79.Nm 80temporarily uses the old snaplen to keep the log file consistent. 81.Pp 82.Nm 83tries to preserve the integrity of the log file against I/O errors. 84Furthermore, integrity of an existing log file is verified before 85appending. | 51and writes the packets to a logfile (normally 52.Pa /var/log/pflog ) 53in 54.Xr tcpdump 1 55binary format. 56These logs can be reviewed later using the 57.Fl r 58option of --- 22 unchanged lines hidden (view full) --- 81If the existing log file was created with a different snaplen, 82.Nm 83temporarily uses the old snaplen to keep the log file consistent. 84.Pp 85.Nm 86tries to preserve the integrity of the log file against I/O errors. 87Furthermore, integrity of an existing log file is verified before 88appending. |
| 86If there is an invalid log file or an I/O error, logging is suspended until a | 89If there is an invalid log file or an I/O error, the log file is moved 90out of the way and a new one is created. 91If a new file cannot be created, logging is suspended until a |
| 87.Dv SIGHUP 88or a 89.Dv SIGALRM 90is received. 91.Pp 92The options are as follows: 93.Bl -tag -width Ds 94.It Fl D 95Debugging mode. 96.Nm 97does not disassociate from the controlling terminal. 98.It Fl d Ar delay 99Time in seconds to delay between automatic flushes of the file. 100This may be specified with a value between 5 and 3600 seconds. 101If not specified, the default is 60 seconds. 102.It Fl f Ar filename 103Log output filename. 104Default is 105.Pa /var/log/pflog . | 92.Dv SIGHUP 93or a 94.Dv SIGALRM 95is received. 96.Pp 97The options are as follows: 98.Bl -tag -width Ds 99.It Fl D 100Debugging mode. 101.Nm 102does not disassociate from the controlling terminal. 103.It Fl d Ar delay 104Time in seconds to delay between automatic flushes of the file. 105This may be specified with a value between 5 and 3600 seconds. 106If not specified, the default is 60 seconds. 107.It Fl f Ar filename 108Log output filename. 109Default is 110.Pa /var/log/pflog . |
| 111.It Fl i Ar interface 112Specifies the 113.Xr pflog 4 114interface to use. 115By default, 116.Nm 117will use 118.Ar pflog0 . |
|
| 106.It Fl s Ar snaplen 107Analyze at most the first 108.Ar snaplen | 119.It Fl s Ar snaplen 120Analyze at most the first 121.Ar snaplen |
| 109bytes of data from each packet rather than the default of 96. 110The default of 96 is adequate for IP, ICMP, TCP, and UDP headers but may | 122bytes of data from each packet rather than the default of 116. 123The default of 116 is adequate for IP, ICMP, TCP, and UDP headers but may |
| 111truncate protocol information for other protocols. 112Other file parsers may desire a higher snaplen. 113.It Fl x 114Check the integrity of an existing log file, and return. 115.It Ar expression 116Selects which packets will be dumped, using the regular language of 117.Xr tcpdump 1 . 118.El --- 7 unchanged lines hidden (view full) --- 126.El 127.Sh EXAMPLES 128Log specific tcp packets to a different log file with a large snaplen 129(useful with a log-all rule to dump complete sessions): 130.Bd -literal -offset indent 131# pflogd -s 1600 -f suspicious.log port 80 and host evilhost 132.Ed 133.Pp | 124truncate protocol information for other protocols. 125Other file parsers may desire a higher snaplen. 126.It Fl x 127Check the integrity of an existing log file, and return. 128.It Ar expression 129Selects which packets will be dumped, using the regular language of 130.Xr tcpdump 1 . 131.El --- 7 unchanged lines hidden (view full) --- 139.El 140.Sh EXAMPLES 141Log specific tcp packets to a different log file with a large snaplen 142(useful with a log-all rule to dump complete sessions): 143.Bd -literal -offset indent 144# pflogd -s 1600 -f suspicious.log port 80 and host evilhost 145.Ed 146.Pp |
| 147Log from another 148.Xr pflog 4 149interface, excluding specific packets: 150.Bd -literal -offset indent 151# pflogd -i pflog3 -f network3.log "not (tcp and port 23)" 152.Ed 153.Pp |
|
| 134Display binary logs: 135.Bd -literal -offset indent 136# tcpdump -n -e -ttt -r /var/log/pflog 137.Ed 138.Pp 139Display the logs in real time (this does not interfere with the 140operation of 141.Nm ) : 142.Bd -literal -offset indent 143# tcpdump -n -e -ttt -i pflog0 144.Ed 145.Pp 146Tcpdump has been extended to be able to filter on the pfloghdr 147structure defined in 148.Aq Ar net/if_pflog.h . 149Tcpdump can restrict the output 150to packets logged on a specified interface, a rule number, a reason, 151a direction, an IP family or an action. 152.Pp | 154Display binary logs: 155.Bd -literal -offset indent 156# tcpdump -n -e -ttt -r /var/log/pflog 157.Ed 158.Pp 159Display the logs in real time (this does not interfere with the 160operation of 161.Nm ) : 162.Bd -literal -offset indent 163# tcpdump -n -e -ttt -i pflog0 164.Ed 165.Pp 166Tcpdump has been extended to be able to filter on the pfloghdr 167structure defined in 168.Aq Ar net/if_pflog.h . 169Tcpdump can restrict the output 170to packets logged on a specified interface, a rule number, a reason, 171a direction, an IP family or an action. 172.Pp |
| 153.Bl -tag -width "reason match " -compact | 173.Bl -tag -width "ruleset authpf " -compact |
| 154.It ip 155Address family equals IPv4. 156.It ip6 157Address family equals IPv6. 158.It ifname kue0 159Interface name equals "kue0". 160.It on kue0 161Interface name equals "kue0". | 174.It ip 175Address family equals IPv4. 176.It ip6 177Address family equals IPv6. 178.It ifname kue0 179Interface name equals "kue0". 180.It on kue0 181Interface name equals "kue0". |
| 182.It ruleset authpf 183Ruleset name equals "authpf". |
|
| 162.It rulenum 10 163Rule number equals 10. 164.It reason match 165Reason equals match. 166Also accepts "bad-offset", "fragment", "bad-timestamp", "short", | 184.It rulenum 10 185Rule number equals 10. 186.It reason match 187Reason equals match. 188Also accepts "bad-offset", "fragment", "bad-timestamp", "short", |
| 167"normalize" and "memory". | 189"normalize", "memory", "congestion", "ip-option", "proto-cksum", 190"state-mismatch", "state-insert", "state-limit", "src-limit", 191and "synproxy". |
| 168.It action pass 169Action equals pass. 170Also accepts "block". 171.It inbound 172The direction was inbound. 173.It outbound 174The direction was outbound. 175.El --- 11 unchanged lines hidden (view full) --- 187.Xr pf.conf 5 , 188.Xr newsyslog 8 189.Sh HISTORY 190The 191.Nm 192command appeared in 193.Ox 3.0 . 194.Sh AUTHORS | 192.It action pass 193Action equals pass. 194Also accepts "block". 195.It inbound 196The direction was inbound. 197.It outbound 198The direction was outbound. 199.El --- 11 unchanged lines hidden (view full) --- 211.Xr pf.conf 5 , 212.Xr newsyslog 8 213.Sh HISTORY 214The 215.Nm 216command appeared in 217.Ox 3.0 . 218.Sh AUTHORS |
| 195Can Erkin Acar | 219.Nm 220was written by 221.An Can Erkin Acar Aq canacar@openbsd.org . |