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Is Tomcat session ID unique?
Tomcat’s session ID is only unique within all existing active sessions. The Servlet spec does not forbid to reuse the ID of an expired session for a new session at some point, months or years later. With a fixed length 32-char hexadecimal string as session ID, all possible IDs are not “unlimited”.
Is SHA1PRNG FIPS compliant?
SHA1PRNG is a pure Java random number generator. It is not as strong as the algorithms used by approved DRBG mechanisms in NIST SP800-90. JSS provides a FIPS 140-2 compliant random number generator called PK11SecureRandom which can also be used via this API.
What is jvmRoute?
jvmRoute. A routing identifier for this Tomcat instance. It will be added to the session id to allow for stateless stickyness routing by load balancers. The details on how the jvmRoute will be included in the id are implementation dependent.
What is Jsessionid Tomcat?
JSESSIONID is a cookie generated by Servlet containers like Tomcat or Jetty and used for session management in the J2EE web application for HTTP protocol. JSESSIONID and session management is not only a popular Servlet interview question but also appears in various JSP interviews.
Is securerandom FIPS compliant?
This class provides a cryptographically strong random number generator (RNG). A cryptographically strong random number minimally complies with the statistical random number generator tests specified in FIPS 140-2, Security Requirements for Cryptographic Modules , section 4.9.
What is mod_jk used for?
mod_jk is an Apache module used to connect the Tomcat servlet container with web servers such as Apache, iPlanet, Sun ONE (formerly Netscape) and even IIS using the Apache JServ Protocol. A web server waits for client HTTP requests.
What is difference between load balancing and clustering?
Server Clustering is a method of turning multiple computer servers into a cluster, which is a group of servers that acts like a single system. Load Balancing is about the distribution of workloads across multiple computing resources, such as computers, server clusters, network links, etc.
How does Tomcat create session?
In session management, Tomcat creates a session id whenever client’s first request gets to the server (However, other servlet containers may behave differently). Then it inserts this session id into a cookie with a name JSESSIONID and sends along with the response.
Is there a way to enable FIPS in Tomcat?
There are two way we can enable FIPS for Tomcat. The steps below use Bouncy Castle as the FIPS compliant JCA/JCE provider. The below steps are tested on Tomcat 9.0.37 (but should work for other Tomcat versions as well.)
What kind of random number generator does Tomcat use?
The Tomcat Web Server configuration needs to be updated to ensure FIPS compliant APIs are used by Tomcat. e.g. Below server.xml change is needed to ensure Tomcat uses a secure random number generator algorithm provided by BCFIPS. By default, Tomcat uses SHA1PRNG.
How to add a FIPS compliant provider to JRE?
Configure the JRE to use the FIPS compliant JCA/JCE provider. Steps here use the provider “BCFIPS” from Bouncy Castle. Edit JRE_HOME/lib/java.security file and add below entries. The existing provider can stay there as it is but we need to ensure that the “BCFIPS” provider takes precedence, so add it in the list before any other providers.
What kind of key store does Tomcat use?
By default, Tomcat uses SHA1PRNG. Also, all the connectors need to be updated to use a BCFIPS compatible key store and trust store (the compatible type, specifically is BCFKS). In order to enforce BCFIPS is FIPS approved only more, we need to specify a JVM option.