#+title: Lab4 Solution
#+title: Amirlan Sharipov (BS21-CS-01)
#+author: Amirlan Sharipov (BS21-CS-01)
#+PROPERTY: header-args :results verbatim :exports both
#+OPTIONS: ^:nil

* Question 1
#+begin_src bash
grep -E '(ERROR|WARNING)' server-data.log
#+end_src

#+RESULTS:
: 2022/09/18 13:25:34 wazuh-remoted: ERROR: Remote syslog blocked from: '10.110.18.0/24'
: 2022/09/18 13:25:35 wazuh-remoted: WARNING: Remote syslog not parsed from: '10.110.18.0/24'
: 2022/09/18 13:25:35 wazuh-remoted: ERROR: Remote syslog blocked from: '10.110.18.0/24'

* Question 2
#+begin_src bash
grep -v 'INFO' server-data.log
#+end_src

#+RESULTS:
: 2022/09/18 13:25:34 wazuh-remoted: ERROR: Remote syslog blocked from: '10.110.18.0/24'
: 2022/09/18 13:25:35 wazuh-remoted: WARNING: Remote syslog not parsed from: '10.110.18.0/24'
: 2022/09/18 13:25:35 wazuh-remoted: ERROR: Remote syslog blocked from: '10.110.18.0/24'

* Question 3
#+begin_src bash
grep -c 'ERROR' server-data.log
#+end_src

#+RESULTS:
: 2

* Question 4
#+begin_src bash
sed -E 's/([01]?[0-9][0-9]?|2[0-4][0-9]|25[0-5])\.([01]?[0-9][0-9]?|2[0-4][0-9]|25[0-5])\.([01]?[0-9][0-9]?|2[0-4][0-9]|25[0-5])\.([01]?[0-9][0-9]?|2[0-4][0-9]|25[0-5])\/([0-2]?[0-9]|3[0-2])/xxx.xxx.xxx.xxx\/xx/g' server-data.log > newlog.log
cat newlog.log
#+end_src

#+RESULTS:
: 2022/09/18 13:25:34 wazuh-remoted: INFO: Remote syslog allowed from: 'xxx.xxx.xxx.xxx/xx'
: 2022/09/18 13:25:34 wazuh-remoted: INFO: Remote syslog allowed from: '10.410.15.0/24'
: 2022/09/18 13:25:34 wazuh-remoted: ERROR: Remote syslog blocked from: 'xxx.xxx.xxx.xxx/xx'
: 2022/09/18 13:25:34 wazuh-remoted: INFO: Remote syslog allowed from: 'xxx.xxx.xxx.xxx/xx'
: 2022/09/18 13:25:35 wazuh-remoted: WARNING: Remote syslog not parsed from: 'xxx.xxx.xxx.xxx/xx'
: 2022/09/18 13:25:35 wazuh-remoted: ERROR: Remote syslog blocked from: 'xxx.xxx.xxx.xxx/xx'
: Log1 2022/09/18 13:25:35 wazuh-remoted: INFO: Remote syslog allowed from: 'xxx.xxx.xxx.xxx/xx'
: 2022/09/18 13:25:35 wazuh-remoted: INFO: Remote syslog allowed from: 'xxx.xxx.xxx.xxx/xx' END
: 2022/09/18 13:25:35 wazuh-remoted: ACTION: none INFO: Remote syslog allowed from: 'xxx.xxx.xxx.xxx/xx'

* Question 5
#+begin_src bash
grep -P "^2022\/09\/18 13:25:(34|35) wazuh-remoted: (INFO|ERROR|WARNING): Remote syslog (allowed|blocked|not parsed) from: '10\.110\.(15|18)\.0\/24'$" server-data.log
#+end_src

#+RESULTS:
: 2022/09/18 13:25:34 wazuh-remoted: INFO: Remote syslog allowed from: '10.110.15.0/24'
: 2022/09/18 13:25:34 wazuh-remoted: ERROR: Remote syslog blocked from: '10.110.18.0/24'
: 2022/09/18 13:25:34 wazuh-remoted: INFO: Remote syslog allowed from: '10.110.15.0/24'
: 2022/09/18 13:25:35 wazuh-remoted: WARNING: Remote syslog not parsed from: '10.110.18.0/24'
: 2022/09/18 13:25:35 wazuh-remoted: ERROR: Remote syslog blocked from: '10.110.18.0/24'