ossim vs ossec

Forwarding), which is the CEF (router's Cisco Express Forwarding feature abbreviation), is used to check for another feature of the packets received on the interface. If the source IP address on the CEF table does not have a route that is consistent with the interface to the receiving packet, the router loses the packet. The beauty of discarding RPF is that it blocks all attacks that disguise the source IP address.1 ) Detection DOS AttackWith the host monitoring system and the IDS system federa

"Unix/linux Network log analysis and Traffic monitoring" experimental environment download650) this.width=650; "src=" Http://s3.51cto.com/wyfs02/M02/53/C2/wKiom1Ru9IygmzgRAAQuIqyf7TA962.jpg "title=" Unix-linux123.jpg "alt=" Wkiom1ru9iygmzgraaquiqyf7ta962.jpg "/>1.Ossim 4.1 Virtual machine Download (for servers running on 2~4g memory)2.Ossim 3.1 Virtual machine download (for older servers running 1~2g memory

# RPM Packages Drop log rotation information into this directoryInclude/etc/logrotate.d# no packages own wtmp--we'll rotate them here/var/log/wtmp {MonthlyCreate 0664 Root utmpRotate 1} # system-specific logs May is also is configured here.Run Time:[Email protected] log]# RPM-QL logrotate/etc/cron.daily/logrotate/etc/logrotate.conf/etc/logrotate.d/usr/sbin/logrotate/usr/share/doc/logrotate-3.7.4/usr/share/doc/logrotate-3.7.4/changes/usr/share/man/man8/logrotate.8.gz/var/lib/logrotate.status/etc/

and the standard of defense technology. Through protocol analysis, content search, and a variety of preprocessing programs, Snort can detect thousands of worms, vulnerability Exploitation attempts, port scans, and various suspicious behaviors. Note that you need to check the free BASE to analyze the Snort warning. 2. ossec hids: an open-source host-based intrusion detection system that performs log analysis, integrity check, Windows Registry monitor

Distributed Log collection system practice (video tutorial)There are a variety of log collection software, end users do not have the energy, it is impossible to put all the log tools to try again, a lot of enterprise common architecture is shown in 1.650) this.width=650; "title=" 6-22.png "alt=" wkiom1dqesqxi6_faacu4iahwvq586.png-wh_50 "src=" http://s4.51cto.com/ Wyfs02/m00/83/10/wkiom1dqesqxi6_faacu4iahwvq586.png-wh_500x0-wm_3-wmp_4-s_2014670677.png "/>Figure 1 Legacy Log Collection architectur

warn the administrator of the existence of the DOS tool. Spof RPF (Reverse Path Forwarding), which is used by CEF (Cisco Express Forwarding function for short) to check another characteristic of packets received on the interface. If the source IP address CEF table does not have the same route as the interface pointing to the received data packet, the router will lose the data packet. The magic of dropping RPF is that it blocks all attacks that disguise source IP addresses. 1) DOS attack detecti

follows: Sep 2310: 16: 14 hostname kernel: iptables icmp-localhost IN = lo OUT = MAC = 00: 00: 00: 00: 00: 00: 00: 00: 00: 00: 00: 08: 00 SRC = 127.0.0.1 DST = 127.0.0.1LEN = 84 TOS = 0x00 PREC = 0x00 TTL = 64 ID = 0 df proto = icmp type = 8 CODE = 0 ID = 57148SEQ = 256 The above method is troublesome. The ulog tool can be used to directly broadcast logs to the user State using netlink. In this way, the efficiency is higher. First, install the ulog package. The command is as follows: # Apt-get

Fool-Operated NagiosTo conserve resources, first install a lower version of the Ossim system on the obsolete machine, and the next step in the WebUI is to turn on the Fool-operated Nagios tour without writing any code and configuration files.1. Set up network Discovery in the left menu. 650) this.width=650; "Name=" image_operate_7151442668266572 "src=" http://s10.sinaimg.cn/mw690/ 001zhpmizy6vyj4etjn09690 "alt=" Operation Nagios "title=" fool-type Ope

2310: 16: 14 hostname kernel: iptables icmp-localhost IN = lo OUT = MAC = 00: 00: 00: 00: 00: 00: 00: 00: 00: 00: 00: 08: 00 SRC = 127.0.0.1 DST = 127.0.0.1LEN = 84 TOS = 0x00 PREC = 0x00 TTL = 64 ID = 0 df proto = icmp type = 8 CODE = 0 ID = 57148SEQ = 256 The above method is troublesome. The ulog tool can be used to directly broadcast logs to the user State using netlink. In this way, the efficiency is higher. First, install the ulog package. The command is as follows: # Apt-get install ulogd

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highlight is the unix/linux system in the boring technical problems, Through the vivid case shows, each case after reading can let the system administrator has the harvest. You'll never regret reading the book. -- Cao Yali 51CTO Blog editor,51CTO senior Operations Manager, college"Unix/linux Network log analysis and Traffic monitoring" This book takes enterprise network security operations as the background, not only detailed analysis of today's more typical security issues, including DDoS at

application was safe against it, but why let an attacker play around? To block those attacks, we use OSSEC with their active response, which blocks an attacker after 10 invalid attempts. Thats how our OSSEC rule looks like: 2-Detecting application misuse Detecting application misuse is very similar to detect attacks. Handle t that in this case the user is not trying to hack us, but use our application in

, where xxx is the absolute path of the CentOS-5.3-i386-bin-DVD.iso file.After mounting, use the tar command to copy all files in the optical drive to the/rice Directory:# Cd/mnt/cdrom# Tar-cf-. | (cd/rice; tar-xvpf -)After the copy is complete, go to the rice directory and click ls-al:# Ls-alDrwxr-xr-x 7 root 6144 03-21.Drwxr-xr-x 4 root 4096 08-12 ..Drwxr-xr-x 2 ossec 407552 03-21 CentOS-Rw-r -- 1 root 112 03-21 23:05. discinfo-Rw-r -- 7 root 212 20

January 21-daily security knowledge highlights 10:08:48 Source: 360 Security broadcast read: 71 likes (0) favorites Share: 1. in-depth analysis of CVE-2016-0010: Microsoft Office rtf file processing heap overflow vulnerability Http://blog.fortinet.com/post/deep-analysis-of-cve-2016-0010-microsoft-office-rtf-file-handling-heap-overflow-vulnerability 2. Linux kernel drop Part 1 Https://cyseclabs.com/page? N = 17012016 3. server security: OSSEC