Hardening Tomcat

Secure SSL ciphers 

 If you are running your Tomcat installation behind a reverse proxy, these recommendations will not be needed, as Tomcat is not terminating SSL/TLS. 

 Change the HTTP connector please use the following ciphers (<tomcat>\conf\server.xml) 

 TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384, TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA, TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256, TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA, TLS_ECDHE_RSA_WITH_3DES_EDE_CBC_SHA, TLS_RSA_WITH_AES_128_CBC_SHA256, TLS_RSA_WITH_AES_128_CBC_SHA, TLS_RSA_WITH_AES_128_GCM_SHA256 

 List updated: 2018-02-07 

 Secure headers 

 If you are running your Tomcat installation behind a reverse proxy, these recommendations will not be needed, as Tomcat is not terminating SSL/TLS. 

 In the SERVER web.xml (<tomcat>\conf\web.xml) uncomment the following sections 

 <filter>

 <filter-name>httpHeaderSecurity</filter-name>

 <filter-class>org.apache.catalina.filters.HttpHeaderSecurityFilter</filter-class>

 <async-supported>true</async-supported>

 <init-param>

 <param-name>antiClickJackingOption</param-name>

 <param-value>SAMEORIGIN</param-value>

 </init-param>

</filter> 

 <filter-mapping>

 <filter-name>httpHeaderSecurity</filter-name>

 <url-pattern>/*</url-pattern>

</filter-mapping> 

 Additional CRSF filtering 

 The TS platform is already safe from CRSF attacks. CRSF tokens are generated at login and required for all data altering transactions. 

 The TS implementation does not use rotating or page specific CRSF tokens, so if additional security is needed use the OWASP implementation . 

 Additional security filters 

 Tempus Serva comes with multiple additional security features 

 

 Lock user session to IP 

 Lock service to listed countries 

 Use passcode sent by SMS 

 

 The filters are activated by uncommenting the code in the applications /WEB-INF/web.xml. 

 Note that the filters can be set any part of the application: login, designer, webinterface and rest. 

 Validating your site 

 You can use the following services to check the security of your installation 

 Test SSL 

 Tip: Remember to check "Do not show the results on the boards" 

 https://www.ssllabs.com/ssltest/ 

 https://sikkerpånettet.dk/ 

 Test Headers 

 https://tools.geekflare.com/report/header-security-test