How to enable additional audit logging?
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2
We use Auditd to monitor specific changes on Linux systems. Majority of our rules come from CIS Benchmark guidelines and then few are added specifically to monitor certain command executions.
We have only seen the following record types so far:
PATH, SYSCALL, CWD, AVC, EXECVE, USER_CMD, USER_LOGIN, USER_AUTH
As per the this link, there are several interesting types which would be crucial to monitor. Few which seem important in our environment are
KERNEL, ADD_USER, ADD_GROUP, MAC_STATUS, NETFILTER_CFG.
Based on the rules mentioned below, can anyone assist in figuring out if these events are being monitored and just haven't been triggered yet, or is the current ruleset incomplete?
-a always,exit -F arch=b64 -S adjtimex -S settimeofday -k time-change
-a always,exit -F arch=b64 -S clock_settime -k time-change
-w /etc/localtime -p wa -k time-change
-w /etc/group -p wa -k identity
-w /etc/passwd -p wa -k identity
-w /etc/gshadow -p wa -k identity
-w /etc/shadow -p wa -k identity
-w /etc/security/opasswd -p wa -k identity
-a always,exit -F arch=b64 -S sethostname -S setdomainname -k system-locale
-w /etc/issue -p wa -k system-locale
-w /etc/issue.net -p wa -k system-locale
-w /etc/hosts -p wa -k system-locale
-w /etc/sysconfig/network -p wa -k system-locale
-w /etc/selinux/ -p wa -k MAC-policy
-w /var/log/faillog -p wa -k logins
-w /var/log/lastlog -p wa -k logins
-w /var/log/tallylog -p wa -k logins
-w /var/log/btmp -p wa -k session
-w /var/run/utmp -p wa -k session
-w /var/log/wtmp -p wa -k session
-a always,exit -F arch=b64 -S chmod -S fchmod -S fchmodat -F auid>=500 -F auid!=4294967295 -k perm_mod
-a always,exit -F arch=b64 -S chown -S fchown -S fchownat -S lchown -F auid>=500 -F auid!=4294967295 -k perm_mod
-a always,exit -F arch=b64 -S setxattr -S lsetxattr -S fsetxattr -S removexattr -S lremovexattr -S fremovexattr -F auid>=500 -F auid!=4294967295 -k perm_mod
-a always,exit -F arch=b64 -S creat -S open -S openat -S truncate -S ftruncate -F exit=-EACCES -F auid>=500 -F auid!=4294967295 -k access
-a always,exit -F arch=b64 -S creat -S open -S openat -S truncate -S ftruncate -F exit=-EPERM -F auid>=500 -F auid!=4294967295 -k access
-a always,exit -F arch=b64 -S mount -F auid>=500 -F auid!=4294967295 -k mounts
-a always,exit -F arch=b64 -S unlink -S unlinkat -S rename -S renameat -F auid>=500 -F auid!=4294967295 -k delete
-w /etc/sudoers -p wa -k scope
-w /var/log/sudo.log -p wa -k actions
-w /sbin/insmod -p x -k modules
-w /sbin/rmmod -p x -k modules
-w /sbin/modprobe -p x -k modules
-a always,exit -F arch=b64 -S init_module -S delete_module -k modules
-a always,exit -F path=/bin/su -F perm=x -F auid>=500 -F auid!=4294967295 -k privileged
-a always,exit -F path=/bin/ping6 -F perm=x -F auid>=500 -F auid!=4294967295 -k privileged
-a always,exit -F path=/sbin/unix_chkpwd -F perm=x -F auid>=500 -F auid!=4294967295 -k privileged
-a always,exit -F path=/sbin/pam_timestamp_check -F perm=x -F auid>=500 -F auid!=4294967295 -k privileged
-a always,exit -F path=/sbin/mount.nfs -F perm=x -F auid>=500 -F auid!=4294967295 -k privileged
Few command specific rules:
-a exit,always -F arch=b64 -S execve -F path=/bin/rm
-a exit,always -F arch=b64 -S execve -F path=/bin/chmod
-a exit,always -F arch=b64 -S execve -F path=/bin/chgrp
-a exit,always -F arch=b64 -S execve -F path=/bin/chown
Data we are currently getting from above rules is extremely helpful and valuable. How to take audit logging a step further?
centos linux-kernel linux-audit
edited Mar 9 at 12:24
Rui F Ribeiro
41.9k1483142
asked Jun 8 '16 at 22:10
AbhiAbhi
786
add a comment |
2
We use Auditd to monitor specific changes on Linux systems. Majority of our rules come from CIS Benchmark guidelines and then few are added specifically to monitor certain command executions.
We have only seen the following record types so far:
PATH, SYSCALL, CWD, AVC, EXECVE, USER_CMD, USER_LOGIN, USER_AUTH
As per the this link, there are several interesting types which would be crucial to monitor. Few which seem important in our environment are
KERNEL, ADD_USER, ADD_GROUP, MAC_STATUS, NETFILTER_CFG.
Based on the rules mentioned below, can anyone assist in figuring out if these events are being monitored and just haven't been triggered yet, or is the current ruleset incomplete?
-a always,exit -F arch=b64 -S adjtimex -S settimeofday -k time-change
-a always,exit -F arch=b64 -S clock_settime -k time-change
-w /etc/localtime -p wa -k time-change
-w /etc/group -p wa -k identity
-w /etc/passwd -p wa -k identity
-w /etc/gshadow -p wa -k identity
-w /etc/shadow -p wa -k identity
-w /etc/security/opasswd -p wa -k identity
-a always,exit -F arch=b64 -S sethostname -S setdomainname -k system-locale
-w /etc/issue -p wa -k system-locale
-w /etc/issue.net -p wa -k system-locale
-w /etc/hosts -p wa -k system-locale
-w /etc/sysconfig/network -p wa -k system-locale
-w /etc/selinux/ -p wa -k MAC-policy
-w /var/log/faillog -p wa -k logins
-w /var/log/lastlog -p wa -k logins
-w /var/log/tallylog -p wa -k logins
-w /var/log/btmp -p wa -k session
-w /var/run/utmp -p wa -k session
-w /var/log/wtmp -p wa -k session
-a always,exit -F arch=b64 -S chmod -S fchmod -S fchmodat -F auid>=500 -F auid!=4294967295 -k perm_mod
-a always,exit -F arch=b64 -S chown -S fchown -S fchownat -S lchown -F auid>=500 -F auid!=4294967295 -k perm_mod
-a always,exit -F arch=b64 -S setxattr -S lsetxattr -S fsetxattr -S removexattr -S lremovexattr -S fremovexattr -F auid>=500 -F auid!=4294967295 -k perm_mod
-a always,exit -F arch=b64 -S creat -S open -S openat -S truncate -S ftruncate -F exit=-EACCES -F auid>=500 -F auid!=4294967295 -k access
-a always,exit -F arch=b64 -S creat -S open -S openat -S truncate -S ftruncate -F exit=-EPERM -F auid>=500 -F auid!=4294967295 -k access
-a always,exit -F arch=b64 -S mount -F auid>=500 -F auid!=4294967295 -k mounts
-a always,exit -F arch=b64 -S unlink -S unlinkat -S rename -S renameat -F auid>=500 -F auid!=4294967295 -k delete
-w /etc/sudoers -p wa -k scope
-w /var/log/sudo.log -p wa -k actions
-w /sbin/insmod -p x -k modules
-w /sbin/rmmod -p x -k modules
-w /sbin/modprobe -p x -k modules
-a always,exit -F arch=b64 -S init_module -S delete_module -k modules
-a always,exit -F path=/bin/su -F perm=x -F auid>=500 -F auid!=4294967295 -k privileged
-a always,exit -F path=/bin/ping6 -F perm=x -F auid>=500 -F auid!=4294967295 -k privileged
-a always,exit -F path=/sbin/unix_chkpwd -F perm=x -F auid>=500 -F auid!=4294967295 -k privileged
-a always,exit -F path=/sbin/pam_timestamp_check -F perm=x -F auid>=500 -F auid!=4294967295 -k privileged
-a always,exit -F path=/sbin/mount.nfs -F perm=x -F auid>=500 -F auid!=4294967295 -k privileged
Few command specific rules:
-a exit,always -F arch=b64 -S execve -F path=/bin/rm
-a exit,always -F arch=b64 -S execve -F path=/bin/chmod
-a exit,always -F arch=b64 -S execve -F path=/bin/chgrp
-a exit,always -F arch=b64 -S execve -F path=/bin/chown
Data we are currently getting from above rules is extremely helpful and valuable. How to take audit logging a step further?
centos linux-kernel linux-audit
edited Mar 9 at 12:24
Rui F Ribeiro
41.9k1483142
asked Jun 8 '16 at 22:10
AbhiAbhi
786
add a comment |
2
2
2
1
We use Auditd to monitor specific changes on Linux systems. Majority of our rules come from CIS Benchmark guidelines and then few are added specifically to monitor certain command executions.
We have only seen the following record types so far:
PATH, SYSCALL, CWD, AVC, EXECVE, USER_CMD, USER_LOGIN, USER_AUTH
As per the this link, there are several interesting types which would be crucial to monitor. Few which seem important in our environment are
KERNEL, ADD_USER, ADD_GROUP, MAC_STATUS, NETFILTER_CFG.
Based on the rules mentioned below, can anyone assist in figuring out if these events are being monitored and just haven't been triggered yet, or is the current ruleset incomplete?
-a always,exit -F arch=b64 -S adjtimex -S settimeofday -k time-change
-a always,exit -F arch=b64 -S clock_settime -k time-change
-w /etc/localtime -p wa -k time-change
-w /etc/group -p wa -k identity
-w /etc/passwd -p wa -k identity
-w /etc/gshadow -p wa -k identity
-w /etc/shadow -p wa -k identity
-w /etc/security/opasswd -p wa -k identity
-a always,exit -F arch=b64 -S sethostname -S setdomainname -k system-locale
-w /etc/issue -p wa -k system-locale
-w /etc/issue.net -p wa -k system-locale
-w /etc/hosts -p wa -k system-locale
-w /etc/sysconfig/network -p wa -k system-locale
-w /etc/selinux/ -p wa -k MAC-policy
-w /var/log/faillog -p wa -k logins
-w /var/log/lastlog -p wa -k logins
-w /var/log/tallylog -p wa -k logins
-w /var/log/btmp -p wa -k session
-w /var/run/utmp -p wa -k session
-w /var/log/wtmp -p wa -k session
-a always,exit -F arch=b64 -S chmod -S fchmod -S fchmodat -F auid>=500 -F auid!=4294967295 -k perm_mod
-a always,exit -F arch=b64 -S chown -S fchown -S fchownat -S lchown -F auid>=500 -F auid!=4294967295 -k perm_mod
-a always,exit -F arch=b64 -S setxattr -S lsetxattr -S fsetxattr -S removexattr -S lremovexattr -S fremovexattr -F auid>=500 -F auid!=4294967295 -k perm_mod
-a always,exit -F arch=b64 -S creat -S open -S openat -S truncate -S ftruncate -F exit=-EACCES -F auid>=500 -F auid!=4294967295 -k access
-a always,exit -F arch=b64 -S creat -S open -S openat -S truncate -S ftruncate -F exit=-EPERM -F auid>=500 -F auid!=4294967295 -k access
-a always,exit -F arch=b64 -S mount -F auid>=500 -F auid!=4294967295 -k mounts
-a always,exit -F arch=b64 -S unlink -S unlinkat -S rename -S renameat -F auid>=500 -F auid!=4294967295 -k delete
-w /etc/sudoers -p wa -k scope
-w /var/log/sudo.log -p wa -k actions
-w /sbin/insmod -p x -k modules
-w /sbin/rmmod -p x -k modules
-w /sbin/modprobe -p x -k modules
-a always,exit -F arch=b64 -S init_module -S delete_module -k modules
-a always,exit -F path=/bin/su -F perm=x -F auid>=500 -F auid!=4294967295 -k privileged
-a always,exit -F path=/bin/ping6 -F perm=x -F auid>=500 -F auid!=4294967295 -k privileged
-a always,exit -F path=/sbin/unix_chkpwd -F perm=x -F auid>=500 -F auid!=4294967295 -k privileged
-a always,exit -F path=/sbin/pam_timestamp_check -F perm=x -F auid>=500 -F auid!=4294967295 -k privileged
-a always,exit -F path=/sbin/mount.nfs -F perm=x -F auid>=500 -F auid!=4294967295 -k privileged
Few command specific rules:
-a exit,always -F arch=b64 -S execve -F path=/bin/rm
-a exit,always -F arch=b64 -S execve -F path=/bin/chmod
-a exit,always -F arch=b64 -S execve -F path=/bin/chgrp
-a exit,always -F arch=b64 -S execve -F path=/bin/chown
Data we are currently getting from above rules is extremely helpful and valuable. How to take audit logging a step further?
centos linux-kernel linux-audit
edited Mar 9 at 12:24
Rui F Ribeiro
41.9k1483142
asked Jun 8 '16 at 22:10
AbhiAbhi
786
We use Auditd to monitor specific changes on Linux systems. Majority of our rules come from CIS Benchmark guidelines and then few are added specifically to monitor certain command executions.
We have only seen the following record types so far:
PATH, SYSCALL, CWD, AVC, EXECVE, USER_CMD, USER_LOGIN, USER_AUTH
As per the this link, there are several interesting types which would be crucial to monitor. Few which seem important in our environment are
KERNEL, ADD_USER, ADD_GROUP, MAC_STATUS, NETFILTER_CFG.
Based on the rules mentioned below, can anyone assist in figuring out if these events are being monitored and just haven't been triggered yet, or is the current ruleset incomplete?
-a always,exit -F arch=b64 -S adjtimex -S settimeofday -k time-change
-a always,exit -F arch=b64 -S clock_settime -k time-change
-w /etc/localtime -p wa -k time-change
-w /etc/group -p wa -k identity
-w /etc/passwd -p wa -k identity
-w /etc/gshadow -p wa -k identity
-w /etc/shadow -p wa -k identity
-w /etc/security/opasswd -p wa -k identity
-a always,exit -F arch=b64 -S sethostname -S setdomainname -k system-locale
-w /etc/issue -p wa -k system-locale
-w /etc/issue.net -p wa -k system-locale
-w /etc/hosts -p wa -k system-locale
-w /etc/sysconfig/network -p wa -k system-locale
-w /etc/selinux/ -p wa -k MAC-policy
-w /var/log/faillog -p wa -k logins
-w /var/log/lastlog -p wa -k logins
-w /var/log/tallylog -p wa -k logins
-w /var/log/btmp -p wa -k session
-w /var/run/utmp -p wa -k session
-w /var/log/wtmp -p wa -k session
-a always,exit -F arch=b64 -S chmod -S fchmod -S fchmodat -F auid>=500 -F auid!=4294967295 -k perm_mod
-a always,exit -F arch=b64 -S chown -S fchown -S fchownat -S lchown -F auid>=500 -F auid!=4294967295 -k perm_mod
-a always,exit -F arch=b64 -S setxattr -S lsetxattr -S fsetxattr -S removexattr -S lremovexattr -S fremovexattr -F auid>=500 -F auid!=4294967295 -k perm_mod
-a always,exit -F arch=b64 -S creat -S open -S openat -S truncate -S ftruncate -F exit=-EACCES -F auid>=500 -F auid!=4294967295 -k access
-a always,exit -F arch=b64 -S creat -S open -S openat -S truncate -S ftruncate -F exit=-EPERM -F auid>=500 -F auid!=4294967295 -k access
-a always,exit -F arch=b64 -S mount -F auid>=500 -F auid!=4294967295 -k mounts
-a always,exit -F arch=b64 -S unlink -S unlinkat -S rename -S renameat -F auid>=500 -F auid!=4294967295 -k delete
-w /etc/sudoers -p wa -k scope
-w /var/log/sudo.log -p wa -k actions
-w /sbin/insmod -p x -k modules
-w /sbin/rmmod -p x -k modules
-w /sbin/modprobe -p x -k modules
-a always,exit -F arch=b64 -S init_module -S delete_module -k modules
-a always,exit -F path=/bin/su -F perm=x -F auid>=500 -F auid!=4294967295 -k privileged
-a always,exit -F path=/bin/ping6 -F perm=x -F auid>=500 -F auid!=4294967295 -k privileged
-a always,exit -F path=/sbin/unix_chkpwd -F perm=x -F auid>=500 -F auid!=4294967295 -k privileged
-a always,exit -F path=/sbin/pam_timestamp_check -F perm=x -F auid>=500 -F auid!=4294967295 -k privileged
-a always,exit -F path=/sbin/mount.nfs -F perm=x -F auid>=500 -F auid!=4294967295 -k privileged
Few command specific rules:
-a exit,always -F arch=b64 -S execve -F path=/bin/rm
-a exit,always -F arch=b64 -S execve -F path=/bin/chmod
-a exit,always -F arch=b64 -S execve -F path=/bin/chgrp
-a exit,always -F arch=b64 -S execve -F path=/bin/chown
Data we are currently getting from above rules is extremely helpful and valuable. How to take audit logging a step further?
centos linux-kernel linux-audit
centos linux-kernel linux-audit
edited Mar 9 at 12:24
Rui F Ribeiro
41.9k1483142
asked Jun 8 '16 at 22:10
AbhiAbhi
786
edited Mar 9 at 12:24
Rui F Ribeiro
41.9k1483142
asked Jun 8 '16 at 22:10
AbhiAbhi
786
edited Mar 9 at 12:24
Rui F Ribeiro
41.9k1483142
edited Mar 9 at 12:24
Rui F Ribeiro
41.9k1483142
edited Mar 9 at 12:24
Rui F Ribeiro
41.9k1483142
41.9k1483142
asked Jun 8 '16 at 22:10
AbhiAbhi
786
asked Jun 8 '16 at 22:10
AbhiAbhi
786
asked Jun 8 '16 at 22:10
AbhiAbhi
786
786
add a comment |
add a comment |
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