Differences
This shows you the differences between two versions of the page.
Both sides previous revision Previous revision Next revision | Previous revision Next revision Both sides next revision | ||
tutorial:adm:server_preparation_tmp [2020/03/12 14:58] urbanl [Apache Tomcat configuration] |
tutorial:adm:server_preparation_tmp [2020/06/24 12:00] kolarikj [mod_security configuration - CentOS8] |
||
---|---|---|---|
Line 1: | Line 1: | ||
- | <note important> | + | <note important> |
+ | |||
+ | **This tutorial is under development, | ||
Author: Ludek Urban | Author: Ludek Urban | ||
Line 5: | Line 7: | ||
- | ====== Server preparation - Linux ====== | + | ====== Server preparation - Linux - CentOS8 |
{{tag> | {{tag> | ||
Line 28: | Line 30: | ||
yum install -y epel-release | yum install -y epel-release | ||
yum update -y | yum update -y | ||
- | # check installed packages. It's recommanded to have them installed. | ||
- | yum list installed | ||
# other recommended packages installation | # other recommended packages installation | ||
- | yum install -y mc haveged nmap screen sysstat telnet | + | yum install -y mc haveged nmap screen sysstat telnet |
# enable haveged after OS start | # enable haveged after OS start | ||
systemctl start haveged.service | systemctl start haveged.service | ||
Line 102: | Line 102: | ||
Change SELINUX labels: | Change SELINUX labels: | ||
< | < | ||
- | chcon -Rt postgresql_db_t pgsql/ | + | chcon -Rt postgresql_db_t |
chcon -Rt postgresql_log_t / | chcon -Rt postgresql_log_t / | ||
</ | </ | ||
Line 208: | Line 208: | ||
useradd -r -s / | useradd -r -s / | ||
getent passwd tomcat | getent passwd tomcat | ||
- | tomcat: | + | #tomcat: |
</ | </ | ||
Line 386: | Line 386: | ||
* Make Tomcat listen only on localhost: | * Make Tomcat listen only on localhost: | ||
* In the ''/ | * In the ''/ | ||
- | | + | |
+ | * Set the '' | ||
+ | * In the ''/ | ||
+ | |||
+ | | ||
< | < | ||
Line 509: | Line 513: | ||
< | < | ||
+ | Protocols | ||
ProxyRequests | ProxyRequests | ||
ProxyPreserveHost on | ProxyPreserveHost on | ||
Line 564: | Line 569: | ||
* Audit log: ''/ | * Audit log: ''/ | ||
* Directory with activated rules: ''/ | * Directory with activated rules: ''/ | ||
- | * basic configuration file for mod\_security: | + | * basic configuration file for mod\_security: |
* The file for chosen rules deactivation: | * The file for chosen rules deactivation: | ||
Line 578: | Line 583: | ||
==== Disabling mod_security rules ==== | ==== Disabling mod_security rules ==== | ||
+ | |||
+ | These rules are disabled for modsec_crs 3.0. | ||
In the file ''/ | In the file ''/ | ||
+ | |||
<code xml> | <code xml> | ||
< | < | ||
- | SecRuleRemoveById | + | SecRuleRemoveById |
- | SecRuleRemoveById | + | SecRuleRemoveById |
- | SecRuleRemoveById | + | SecRuleRemoveById |
+ | | ||
+ | | ||
# Allow Czech signs | # Allow Czech signs | ||
- | SecRuleRemoveById | + | SecRuleRemoveById |
- | SecRuleRemoveById | + | SecRuleRemoveById |
- | SecRuleRemoveById | + | SecRuleRemoveById |
- | SecRuleRemoveById | + | SecRuleRemoveById |
| | ||
# Too restrictive for login format | # Too restrictive for login format | ||
- | SecRuleRemoveById | + | SecRuleRemoveById |
+ | |||
# Needed by Websockets | # Needed by Websockets | ||
< | < | ||
- | SecRuleRemoveById | + | SecRuleRemoveById |
</ | </ | ||
| | ||
- | # These break Certificate Authority module | ||
- | < | ||
- | SecRuleRemoveById 960915 | ||
- | SecRuleRemoveById 200003 | ||
- | </ | ||
- | |||
- | # Modsec can throw false positives on some files due to multipart boundary check | ||
- | < | ||
- | SecRuleRemoveById 960915 | ||
- | SecRuleRemoveById 200003 | ||
- | </ | ||
- | |||
# do not log request/ | # do not log request/ | ||
SecAuditLogParts ABFHZ | SecAuditLogParts ABFHZ | ||
Line 619: | Line 616: | ||
==== mod_security configuration - CentOS8 | ==== mod_security configuration - CentOS8 | ||
- | In the file / | + | In the file / |
- | Whole rules after the changes looks like this: | + | |
+ | * find the rule 900200 and add methods | ||
< | < | ||
Line 630: | Line 628: | ||
nolog,\ | nolog,\ | ||
setvar:' | setvar:' | ||
+ | </ | ||
+ | * find the rule 900220 and add support for content\_type=application/ | ||
+ | |||
+ | < | ||
# Default HTTP policy: allowed_request_content_type (rule 900220) | # Default HTTP policy: allowed_request_content_type (rule 900220) | ||
SecRule & | SecRule & | ||
Line 678: | Line 680: | ||
</ | </ | ||
</ | </ | ||
- | |||
- | ===== Workaround for slow HTTPD shutdown ===== | ||
- | In some RHEL/CentOS versions Apache HTTPD shutsdown or restarts itself very slowly. It is caused by [[https:// | ||
- | Workaround is to edit '''/ | ||
- | < | ||
- | KillMode=none | ||
- | </ | ||
- | Then reload systemd: | ||
- | |||
- | < | ||
- | systemctl daemon-reload | ||
- | </ | ||
- | |||
- | It is absolutely correct to create new versions of unity in /etc, that has the option: | ||
- | |||
- | < | ||
- | cp / | ||
- | vim / | ||
- | systemctl daemon-reload | ||
- | </ | ||
- | |||
- | The patch of httpd should come soon so the first option is OK too. | ||
- | |||
- | |||
- | |||
- | |||