Auditd : Transfer Logs to Remote Host2021/07/22 |
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Configure Auditd to transfer logs to remote host.
This example is based on the environment like follows. +----------------------+ | +----------------------+ | [ Auditd Server ] |10.0.0.30 | 10.0.0.51| [ Auditd Client ] | | dlp.srv.world +----------+----------+ node01.srv.world | | | | | +----------------------+ +----------------------+ |
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| [1] | Configure Auditd Host that receives Audit logs from remote hosts. |
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[root@dlp ~]#
vi /etc/audit/auditd.conf # line 27 : uncomment and specify listening port tcp_listen_port = 60
service auditd restart # if use [systemctl restart], it fails for dependency |
| [2] | If Firewalld is running on Audit receiver Host, allow audit service. |
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[root@dlp ~]# firewall-cmd --add-service=audit success [root@dlp ~]# firewall-cmd --runtime-to-permanent success |
| [3] | Configure Auditd Client Host that sends Audit logs. |
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[root@node01 ~]#
dnf -y install audispd-plugins
[root@node01 ~]#
vi /etc/audit/plugins.d/au-remote.conf # line 6 : change active = yes
[root@node01 ~]#
vi /etc/audit/audisp-remote.conf # line 6 : remote host to send logs remote_server = dlp.srv.world
# line 7 : specify port (the one which remote server is just listening) port = 60
[root@node01 ~]#
vi /etc/audit/auditd.conf # line 9 : change (not record logs on local filesystem) log_format = NOLOG
service auditd restart |
| [4] | That's OK, Audit logs on remote hosts are recorded like follows. |
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[root@dlp ~]# grep node01 /var/log/audit/audit.log type=CRED_DISP msg=audit(1626925625.884:110): pid=1141 uid=0 auid=0 ses=1 subj=system_u:system_r:local_login_t:s0-s0:c0.c1023 msg='op=PAM:setcred grantors=pam_unix acct="root" exe="/usr/bin/login" hostname=node01.srv.world addr=? terminal=ttyS0 res=success' type=USER_END msg=audit(1626925625.889:111): pid=1141 uid=0 auid=0 ses=1 subj=system_u:system_r:local_login_t:s0-s0:c0.c1023 msg='op=PAM:session_close grantors=pam_selinux,pam_loginuid,pam_console,pam_selinux,pam_namespace,pam_keyinit,pam_keyinit,pam_limits,pam_systemd,pam_unix,pam_umask,pam_lastlog acct="root" exe="/usr/bin/login" hostname=node01.srv.world addr=? terminal=ttyS0 res=success' type=USER_AUTH msg=audit(1626925631.806:120): pid=25720 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:local_login_t:s0-s0:c0.c1023 msg='op=PAM:authentication grantors=pam_unix acct="root" exe="/usr/bin/login" hostname=node01.srv.world addr=? terminal=ttyS0 res=success' ..... ..... |
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