CISCO 日志事件的LINUX服务器
http://blog.chinaunix.net/uid-12380499-id-105686.html搭建记录CISCO 日志事件的LINUX服务器.
2.cisco交换机地址:10.0.0.71
Linux地址:192.168.80.63
3.试验步骤主要分两大块
1)交换机
首先设置交换机能够发出日志
开启:
(config)#loggingon (开启日志)
(config)# loggingfacility local4 (local4设备号,这要和LINUX那对应)
(config)#logging 192.168.80.63
(config)#logging trap
logging facility命令更改设备号,并Show logging
2)LINUX
2.1 设置/etc/syslog.conf 配置文件文件(此文件是设置cisco发过来的文件到那个文件)
# vi/etc/syslog.conf
# Log all kernel messages to the console.
# Logging much else clutters up the screen.
#kern.* /dev/console
# Log anything (except mail) of level info or higher.
# Don't log private authentication messages!
*.info;mail.none;authpriv.none;cron.none /var/log/messages
# The authpriv file has restricted access.
authpriv.* /var/log/secure
# Log all the mail messages in one place.
mail.* -/var/log/maillog
# Log cron stuff
cron.* /var/log/cron
# Everybody gets emergency messages
*.emerg *
# Save news errors of level crit and higher in aspecial file.
uucp,news.crit /var/log/spooler
# Save boot messages also to boot.log
local7.* /var/log/boot.log
local4.* /var/log/80.log
(*表示所有消息) (这里local4就是和cisco设置的local4对应,并且它把cisco发过来的日志放到var/log/80.log)
可以用man syslog共有8种消息等级.
#defineKERN_EMERG "<0>"/* system isunusable */
#defineKERN_ALERT "<1>"/* actionmust be taken immediately */
#defineKERN_CRIT "<2>"/*criticalconditions */
#defineKERN_ERR "<3>"/*errorconditions */
#defineKERN_WARNING"<4>"/* warningconditions */
#defineKERN_NOTICE "<5>"/* normal butsignificant condition */
#defineKERN_INFO "<6>"/*informational */
#defineKERN_DEBUG "<7>"/*debug-levelmessages */
alert －需要立即采取的动作
crit －临界状态
err －错误状态。等同error
warning －预警信息，等同warn
notice －正常但是要注意
info －正常消息
debug －调试
none －一般的信息
2.2修改配置文件/etc/sysconfig/syslog
改这里是因为需要linux去读取来的消息
# Options to syslogd
# -m 0 disables 'MARK' messages.
# -r enables logging from remote machines
# -x disables DNS lookups on messagesrecieved with –r (不用DNS解析)
# See syslogd(8) for more details
SYSLOGD_OPTIONS=" -m0" 修改为SYSLOGD_OPTIONS="-r-x -m 0"
# Options to klogd
# -2 prints all kernel oops messages twice; oncefor klogd to decode, and
# once for processing with'ksymoops'
# -x disables all klogd processing of oops messagesentirely
# See klogd(8) for more details
KLOGD_OPTIONS="-x"
#
SYSLOG_UMASK=077
# set this to a umask value to use for all log files asin umask(1).
# By default, all permissions are removed for"group" and "other".
2.3修改文件syslog 之后
重启syslog服务
Service syslog restart
2.4 查看syslogd进程
ps –ef |grepsyslogd |grep –v “grep syslogd”
root 30307 1013:59 ? 00:00:00 syslogd -r -x -m ###有-r 就表示成功
2.5 设置LINUX 允许cisco数据包进来.
# iptables -L
Chain INPUT (policy ACCEPT)
target prot optsource destination
ACCEPT udp--anywhere 192.168.80.63 udpdpt:syslog
Chain FORWARD (policy ACCEPT)
target prot optsource destination
Chain OUTPUT (policy ACCEPT)
target prot optsource destination
命令是: iptables –A INPUT –p udp –d192.168.80.63 –dport 514 –j ACCEPT
2.6查看日志服务器监听的udp端口：514
netstat-untl|grep514
udp 0 00.0.0.0:514 0.0.0.0:* ###514 已经起来
这样,查看80.log是否有记录
#cat /var/log/80.log
Jan 14 21:36:06 10.0.0.71 949: 001021: *Mar 1400:47:29: %SYS-5-CONFIG_I: Configured from console by abc on vty1(192.168.2.1)
Jan 14 22:51:04 10.0.0.71 950: 001022: *Mar 1402:01:32: %LINK-3-UPDOWN: Interface FastEthernet0/7, changed state to up
Jan 14 22:51:05 10.0.0.71 951: 001023: *Mar 1402:01:33: %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/7,changed state to up(完)
来自 <http://blog.chinaunix.net/uid-12380499-id-105686.html>
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