1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
|
#############################################################################
# Copyright (c) 2017 Balabit
#
# This program is free software; you can redistribute it and/or modify it
# under the terms of the GNU General Public License version 2 as published
# by the Free Software Foundation, or (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
#
# As an additional exemption you are allowed to compile & link against the
# OpenSSL libraries as published by the OpenSSL project. See the file
# COPYING for details.
#
#############################################################################
#
# logging timestamps
# logging timezone
# logging sequence-id
# logging origin-id
# logging fraction of a second
#
#
# <pri>(sequence: )?(origin: )?(timestamp? timezone?: )?%msg
#
# Alternatively, we see Cisco NGFW firewall logs with ISO 8601 timestamp and with the following format:
# <pri>(timestamp)(timezone) (origin) : %msg
#<189>29: foo: *Apr 29 13:58:40.411: %SYS-5-CONFIG_I: Configured from console by console
#<190>30: foo: *Apr 29 13:58:46.411: %SYS-6-LOGGINGHOST_STARTSTOP: Logging to host 192.168.1.239 stopped - CLI initiated
#<190>31: foo: *Apr 29 13:58:46.411: %SYS-6-LOGGINGHOST_STARTSTOP: Logging to host 192.168.1.239 started - CLI initiated<189>32: 0.0.0.0: *Apr 29 13:59:12.491: %SYS-5-CONFIG_I: Configured from console by console<189>33: 0.0.0.0: *Apr 29 13:59:26.415: %SYS-5-CONFIG_I: Configured from console by console<189>34: 0.0.0.0: *Apr 29 13:59:56.603: %SYS-5-CONFIG_I: Configured from console by console^[[<189>35: *Apr 29 14:00:16.059: %SYS-5-CONFIG_I: Configured from console by console
#<190>32: foo: *Apr 29 13:58:46.411: %SYSMGR-STANDBY-3-SHUTDOWN_START: The System Manager has started the shutdown procedure.
# A leading dot marks an out-of-sync timestamp
#<180>782431: machine1: .Nov 18 21:03:22.631 GMT: %CDP-4-NATIVE_VLAN_MISMATCH: Native VLAN mismatch discovered on TenGigabitEthernet.
#<166>2022-02-16T15:31:53Z na-zy-int-fp1140-p02 : %FTD-6-305012: Teardown dynamic TCP translation from FOO-WAN_IN:10.44.60.80/59877 to FOO-OUTSIDE:6.7.8.9/59877 duration 0:01:01
#<164>Aug 08 16:58:18 DEVICE123 : %FTD-4-106023: test cisco asa
#<187>138076: RP/0/RP0/CPU0:Dec 11 12:43:29.227 EST: snmpd[1002]: %SNMP-SNMP-3-AUTH_FAIL : Received snmp request on unknown community from 0.0.0.0
#<187>3408: CLC 6/0: Dec 11 13:31:14.214 EST: %PKI-3-CERTIFICATE_INVALID_EXPIRED: Certificate chain validation has failed. The certificate (SN: XXXXXXXX) has expired. Validity period ended on 2025-01-23T00:00:00Z
@define cisco-parser-timestamp-pattern '^[\*\.]?([A-Za-z]{3} [0-9 ]\d (\d{4} )?\d{2}:\d{2}:\d{2}(\.\d{3})?( (AM|PM))?)'
@define cisco-parser-ISO-timestamp-pattern '^(\d{4}-\d{2}-\d{2}T\d{2}:\d{2}:\d{2})'
#
# parses a cisco timestamp with explicit date-parser
# It ignores timezone information
#
block parser cisco-timestamp-parser(template()) {
channel {
parser {
regexp-parser(patterns('`cisco-parser-timestamp-pattern`' '`cisco-parser-ISO-timestamp-pattern`') template(`template`));
};
parser {
date-parser(format('%b %d %I:%M:%S %p.%f',
'%b %d %I:%M:%S %p',
'%b %d %H:%M:%S.%f',
'%b %d %H:%M:%S',
'%b %d %Y %H:%M:%S.%f',
'%b %d %Y %H:%M:%S',
'%Y-%m-%dT%H:%M:%S')
template("$1"));
};
};
};
block parser cisco-triplet-parser(template() prefix()) {
channel {
if {
parser {
csv-parser(delimiters(chars('-')) template(`template`)
columns('`prefix`facility', '`prefix`severity', '`prefix`mnemonic')
drop-invalid(yes));
};
} else {
parser {
csv-parser(delimiters(chars('-')) template(`template`)
columns('`prefix`facility', '4', '`prefix`severity', '`prefix`mnemonic')
drop-invalid(yes));
};
rewrite { set("${`prefix`facility}-$4" value('`prefix`facility')); };
};
};
};
block parser cisco-parser(prefix(".cisco.") template("$MSG")) {
channel {
parser {
# parse syslog <pri> field
syslog-parser(flags(no-header) template(`template`));
# split msg and header right before the '%', Cisco messages may
# have a variable number of ': ' terminated values
csv-parser(delimiters(chars('') strings(': %'))
columns('1', '2', '3') flags(greedy) drop-invalid(yes));
csv-parser(delimiters(chars(':')) template("$2") columns('3'));
cisco-triplet-parser(template("$3") prefix(`prefix`));
};
rewrite {
set('%$2', value("MSG"));
# drop "seqno: " if present
subst("^([0-9]+: )?", "", value('1'));
};
if {
if {
parser {
regexp-parser(
patterns(
'`cisco-parser-ISO-timestamp-pattern`\w+ (?<HOST>\S+)\s*$',
'`cisco-parser-timestamp-pattern` (?<HOST>\S+)\s*$',
)
template('$1')
);
};
};
parser { cisco-timestamp-parser(template("$1")); };
} elif {
# RP is from ios-xr 7.x NCS5500 and asr9922
# CLC comes from CBR8 running ios-xe 16.x and 17.x
parser { regexp-parser(
patterns("^(?'cpu_module'RP/[0-9]/[^:]+):(.*)",
"^(?'cpu_module'CLC [0-9]/[0-9]): +(.*)")
template('$1') prefix("`prefix`"));
};
parser { cisco-timestamp-parser(template("$2")); };
} elif {
parser { regexp-parser(patterns("^(?'HOST'[^:]+): (.*)") template('$1')); };
parser { cisco-timestamp-parser(template("$2")); };
} elif {
parser { regexp-parser(patterns("^(?'HOST'[^:]+)$") template('$1')); };
} else {
parser { regexp-parser(patterns("^$") template('$1')); };
};
};
};
application cisco[syslog-raw] {
filter { message(": %" type(string) flags(substring)); };
parser { cisco-parser(); };
};
|
