On Thu, Oct 3, 2013 at 4:26 AM, Michiel van Es <[email protected]> wrote: > Is my ossec.conf on the agents correct? > tested again today after some days: >
As far as I can tell it seems ok. > added an entry to /etc/hosts, nothing is detected and alerted directly.. > What do you mean by "alerted directly?" > > Op vrijdag 27 september 2013 15:50:18 UTC+2 schreef Michiel van Es: >> >> Hello, I have the following setup : >> >> 1 manager - OSSEC 2.7 64 bit tar.gz manager install via script >> 2 agents - OSSEC 2.7 64 bit Atomic repo install >> >> I have changes de <syscheck> in /var/ossec/etc/ossec.conf to the following >> on the manager: >> >> <syscheck> >> <!-- Frequency that syscheck is executed - default to every 22 hours >> in seconds --> >> <frequency>7200</frequency> >> >> <!-- Directories to check (perform all possible verifications) --> >> <directories realtime="yes" >> check_all="yes">/etc,/usr/bin,/usr/sbin</directories> >> <directories check_all="yes">/bin,/sbin</directories> >> >> <!-- Files/directories to ignore --> >> <ignore>/etc/mtab</ignore> >> <ignore>/etc/mnttab</ignore> >> <ignore>/etc/hosts.deny</ignore> >> <ignore>/etc/mail/statistics</ignore> >> <ignore>/etc/random-seed</ignore> >> <ignore>/etc/adjtime</ignore> >> <ignore>/etc/httpd/logs</ignore> >> <ignore>/etc/utmpx</ignore> >> <ignore>/etc/wtmpx</ignore> >> <ignore>/etc/cups/certs</ignore> >> <ignore>/etc/dumpdates</ignore> >> <ignore>/etc/svc/volatile</ignore> >> >> <!-- Windows files to ignore --> >> <ignore>C:\WINDOWS/System32/LogFiles</ignore> >> <ignore>C:\WINDOWS/Debug</ignore> >> <ignore>C:\WINDOWS/WindowsUpdate.log</ignore> >> <ignore>C:\WINDOWS/iis6.log</ignore> >> <ignore>C:\WINDOWS/system32/wbem/Logs</ignore> >> <ignore>C:\WINDOWS/system32/wbem/Repository</ignore> >> <ignore>C:\WINDOWS/Prefetch</ignore> >> <ignore>C:\WINDOWS/PCHEALTH/HELPCTR/DataColl</ignore> >> <ignore>C:\WINDOWS/SoftwareDistribution</ignore> >> <ignore>C:\WINDOWS/Temp</ignore> >> <ignore>C:\WINDOWS/system32/config</ignore> >> <ignore>C:\WINDOWS/system32/spool</ignore> >> <ignore>C:\WINDOWS/system32/CatRoot</ignore> >> </syscheck> >> >> I want realtime monitoring of the /etc/ directories on the agents. >> I tested the active restarts and link with the agents via the >> agent_control -lc >> >> The agents have the following ossec.conf: >> >> <ossec_config> >> <client> >> <server-ip>10.10.138.69</server-ip> >> </client> >> </ossec_config> >> >> Nothing happens when I alter /etc/hosts on 1 of the agents. >> >> When I change the /etc/hosts on the manager it is instant (exactly what I >> want). >> >> I changed the ossec.conf on the agents with the following; >> >> <ossec_config> >> <client> >> <server-ip>10.10.138.69</server-ip> >> </client> >> >> <syscheck> >> <!-- Frequency that syscheck is executed - default to every 22 hours >> in seconds --> >> <frequency>7200</frequency> >> >> <!-- Directories to check (perform all possible verifications) --> >> <directories realtime="yes" >> check_all="yes">/var/ossec/etc,/etc,/usr/bin,/usr/sbin</directories> >> <directories check_all="yes">/bin,/sbin</directories> >> >> <!-- Files/directories to ignore --> >> <ignore>/etc/mtab</ignore> >> <ignore>/etc/mnttab</ignore> >> <ignore>/etc/hosts.deny</ignore> >> <ignore>/etc/mail/statistics</ignore> >> <ignore>/etc/random-seed</ignore> >> <ignore>/etc/adjtime</ignore> >> <ignore>/etc/httpd/logs</ignore> >> <ignore>/etc/utmpx</ignore> >> <ignore>/etc/wtmpx</ignore> >> <ignore>/etc/cups/certs</ignore> >> <ignore>/etc/dumpdates</ignore> >> <ignore>/etc/svc/volatile</ignore> >> >> <!-- Windows files to ignore --> >> <ignore>C:\WINDOWS/System32/LogFiles</ignore> >> <ignore>C:\WINDOWS/Debug</ignore> >> <ignore>C:\WINDOWS/WindowsUpdate.log</ignore> >> <ignore>C:\WINDOWS/iis6.log</ignore> >> <ignore>C:\WINDOWS/system32/wbem/Logs</ignore> >> <ignore>C:\WINDOWS/system32/wbem/Repository</ignore> >> <ignore>C:\WINDOWS/Prefetch</ignore> >> <ignore>C:\WINDOWS/PCHEALTH/HELPCTR/DataColl</ignore> >> <ignore>C:\WINDOWS/SoftwareDistribution</ignore> >> <ignore>C:\WINDOWS/Temp</ignore> >> <ignore>C:\WINDOWS/system32/config</ignore> >> <ignore>C:\WINDOWS/system32/spool</ignore> >> <ignore>C:\WINDOWS/system32/CatRoot</ignore> >> </syscheck> >> >> </ossec_config> >> >> and restarted the ossec service on the agents, let sysstem-check rebuild >> its database on both agents: >> 2013/09/27 14:16:33 ossec-syscheckd: INFO: Monitoring directory: '/etc'. >> 2013/09/27 14:16:33 ossec-syscheckd: INFO: Monitoring directory: >> '/usr/bin'. >> 2013/09/27 14:16:33 ossec-syscheckd: INFO: Monitoring directory: >> '/usr/sbin'. >> 2013/09/27 14:16:33 ossec-syscheckd: INFO: Monitoring directory: '/bin'. >> 2013/09/27 14:16:33 ossec-syscheckd: INFO: Monitoring directory: '/sbin'. >> 2013/09/27 14:16:33 ossec-syscheckd: INFO: Directory set for real time >> monitoring: '/var/ossec/etc'. >> 2013/09/27 14:16:33 ossec-syscheckd: INFO: Directory set for real time >> monitoring: '/etc'. >> 2013/09/27 14:16:33 ossec-syscheckd: INFO: Directory set for real time >> monitoring: '/usr/bin'. >> 2013/09/27 14:16:33 ossec-syscheckd: INFO: Directory set for real time >> monitoring: '/usr/sbin'. >> 2013/09/27 14:18:27 ossec-syscheckd: INFO: Starting syscheck scan >> (forwarding database). >> 2013/09/27 14:18:27 ossec-syscheckd: INFO: Starting syscheck database >> (pre-scan). >> 2013/09/27 14:18:27 ossec-syscheckd: INFO: Initializing real time file >> monitoring (not started). >> 2013/09/27 14:43:12 ossec-syscheckd: INFO: Real time file monitoring >> started. >> 2013/09/27 14:43:12 ossec-syscheckd: INFO: Finished creating syscheck >> database (pre-scan completed). >> 2013/09/27 14:43:26 ossec-syscheckd: INFO: Ending syscheck scan >> (forwarding database) >> >> I change the /etc/hosts file again and multiple new lines to make sure it >> wont match the MD5 sum. >> Still nothing happening on the agents, no alert triggered (as on the >> manager it was instant) >> >> Am I correct that the realtime configuration should be in the ossec.conf >> on the agents? >> I have seen one error on 1 of the servers alerting: >> >> Rule: 553 (level 7) -> 'File deleted. Unable to retrieve checksum.' >> File '/etc/hosts' was deleted. Unable to retrieve checksum. >> >> >> How can I recreate the database? >> >> Regards and sorry if I ask the obvious questions here. >> >> Michiel > > -- > > --- > You received this message because you are subscribed to the Google Groups > "ossec-list" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > For more options, visit https://groups.google.com/groups/opt_out. -- --- You received this message because you are subscribed to the Google Groups "ossec-list" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/groups/opt_out.
