Running Confluence Over SSL or HTTPS
Atlassian applications can be accessed via HTTPS, however Atlassian Support does not provide assistance for configuring it. Consequently, Atlassian cannot guarantee providing any support for it.
- If assistance with conversions of certificates is required, please consult with the vendor who provided the certificate.
- If assistance with configuration is required, please raise a question on Atlassian Community.
This page provides a basic outline of how to configure Confluence to enable access via HTTPS (HTTP Secure), so that your Confluence logins and data are encrypted during transport to and from Confluence. This is a good way to safeguard your Confluence data and user logins from being intercepted and read by outsiders.
In this article we use 'SSL' as a general term to refer to the protocol used to encrypt traffic. In most cases the protocol will be TLS.
On this page:
These instructions cover terminating SSL at Tomcat, the application server shipped with Confluence.
You'll need the JDK for some of the steps in this guide. The JRE is not enough.
Running Confluence without HTTPS enabled may leave your site exposed to vulnerabilities, such as man-in-the-middle or DNS rebinding attacks. We recommend you enable HTTPS on your site.
Step 1. Create or request an SSL certificate
You'll need a valid certificate before you can enable HTTPS. If you already have a certificate, skip to step 2.
You can create your own self-signed certificate, or acquire one from a trusted Certificate Authority.
If your team plans to use the Confluence Server mobile app, you'll need a certificate issued by a trusted Certificate Authority. You can't use the app with a self-signed certificate, or one from an untrusted or private CA.
Option 1: Create a self-signed certificate
Self-signed certificates are useful if you require encryption but don't need to verify the identity of the requesting website. In general, you might use a self-signed certificate on a test environment and on internal corporate networks (intranets).
Because the certificate is not signed by a certificate authority (CA), users may receive a message that the site is not trusted and may have to perform several steps to accept the certificate before they can access the site. This usually will only occur the first time they access the site. Users won't be able to log in to your site at all via the Confluence Server mobile app if you use a self-signed certificate.
In this example, we'll use Java's
keytool utility, which is included with the JDK. If you're not comfortable using command line utilities KeyStore Explorer is a useful alternative to the command line.
To generate a self-signed certificate using
From the command line, run the appropriate command for your operating system:Windows
"%JAVA_HOME%\bin\keytool" -genkeypair -keysize 2048 -alias tomcat -keyalg RSA -sigalg SHA256withRSALinux (and MacOS)
$JAVA_HOME/bin/keytool -genkeypair -keysize 2048 -alias tomcat -keyalg RSA -sigalg SHA256withRSA
When prompted, create a password for the certificate (private key).
- Only use alphanumeric characters. Tomcat has a known issue with special characters.
- Make a note of the password, you'll need it in the next step.
The default password is '
- Follow the prompts to specify the certificate details. This info is used to construct the X.500 Distinguished Name (DN) of the entity.
- First and last name: this is not your name, it is the Common Name (CN), for example 'confluence.example.com'. The CN must match the fully qualified hostname of the server running Confluence, or Tomcat won't be able to use the certificate for SSL.
- Organizational unit: this is the team or department requesting the certificate, for example 'marketing'.
- Organization: this is your company name, for example 'SeeSpaceEZ'.
City, State / province, country code: this is where you're located, for example Sydney, NSW, AU.
The output will look something like the example below. Hit '
y' to confirm the details.
CN=confluence.example.com, OU=Marketing, O=SeeSpaceEZ, L=Sydney, ST=NSW, C=AU
- When asked for the password for 'tomcat', enter the password you created in step 2 (or hit return to use the same .
- 'tomcat' is the alias we entered in the keytool command above, it refers to your.
- Your keystore entry must have the same password as your private key. This is a Tomcat requirement.
- You certificate is now ready. Go to step 2 below.
Option 2: Use a certificate issued by a Certificate Authority (recommended)
First you will generate a local certificate and create a 'certificate signing request' (CSR) based on that certificate. You will submit the CSR to your chosen certificate authority. The CA will use that CSR to generate a certificate for you.
- Use Java's
keytoolutility to generate a local certificate (follow the steps in option 1, above).
From the command line, run the following command to generate a certificate signing request.
keytool -certreq -keyalg RSA -alias tomcat -file certreq.csr -keystore <MY_KEYSTORE_FILENAME>
<MY_KEYSTORE_FILENAME>with the path to and file name of the
.keystorefile generated for your local certificate.
- Submit the generated file called
certreq.csrto your chosen certificate authority.
Check your CA's documentation to find out how to do this.
- The CA will send you a certificate.
Import the new certificate into your local keystore:
keytool -importcert -alias tomcat -keystore <MY_KEYSTORE_FILENAME> -file <MY_CERTIFICATE_FILENAME>
Some CAs require you to install an intermediate certificate before importing your certificate. You should follow your CA documentation to successfully install your certificate.
If you receive an error, and you use Verisign or GoDaddy, you may need to export the certificate to PKCS12 format along with the private key.
First, remove the certificate added above from the keystore:
keytool -delete -alias tomcat -keystore <MY_KEYSTORE_FILENAME>
Then export to PKCS12 format:
openssl pkcs12 -export -in <MY_CERTIFICATE_NAME> -inkey <MY_PRIVATEKEY_NAME> -out <MY_PKC12_KEYSTORE_NAME> -name tomcat -CAfile <MY_ROOTCERTIFICATE_NAME-alsoCalledBundleCertificateInGoDaddy> -caname root
Then import from PKCS12 to jks:
keytool -importkeystore -deststorepass <MY_DESTINATIONSTORE_PASSWORD> -destkeypass <MY_DESTINATIONKEY_PASSWORD> -destkeystore <MY_KEYSTORE_FILENAME> -srckeystore <MY_PKC12_KEYSTORE_NAME> -srcstoretype PKCS12 -srcstorepass <MY_PKC12_KEYSTORE_PASSWORD> -alias tomcat
Step 2. Modify your Confluence server.xml file
The next step is to configure Confluence to use HTTPS.
- Edit <
Uncomment the following lines:
<Connector port="8443" maxHttpHeaderSize="8192" maxThreads="150" minSpareThreads="25" protocol="org.apache.coyote.http11.Http11Nio2Protocol" enableLookups="false" disableUploadTimeout="true" acceptCount="100" scheme="https" secure="true" clientAuth="false" sslProtocol="TLSv1.2" sslEnabledProtocols="TLSv1.2" SSLEnabled="true" URIEncoding="UTF-8" keystorePass="<MY_CERTIFICATE_PASSWORD>"/>
- Replace <
MY_CERTIFICATE_PASSWORD>with the password you specified for your certificate.
- Make sure that the attribute-value pair
SSLEnabled="true"is part of the
Connectorelement, as shown above. If this attribute is not present, attempts to access Confluence will time out.
- Change the value of
maxThreadsto be at least 10 threads (or 25%) less than the size of your database connection pool. 48 is usually about right. See HTTP MaxThreads configuration for more information about this.
- Save the server configuration file.
Don't remove or comment out the
http connector, as the Synchrony proxy health check, still requires HTTP. If you don't want to include the
http connector, you can use the
synchrony.proxy.healthcheck.disabled system property to disable the health check.
You should also not disable the internal Synchrony proxy (by setting the
synchrony.proxy.enabled system property to
false) as this is known to cause problems when you're terminating SSL at Tomcat.
The default connector port for Confluence is 8090.
We recommend you use TLS 1.2, as the Confluence mobile app requires minimum TLS 1.2, and there are currently some known issues running Confluence with TLS 1.3.
Step 3. Specify the location of your certificate
By default, Tomcat expects the keystore file to be named
.keystore and to be located in the user home directory under which Tomcat is running (which may or may not be the same as your own home directory). This means that, by default, Tomcat will look for your SSL certificates in the following location:
- On Windows:
- On OS X and UNIX-based systems:
Don't store your keystore file in your Confluence installation directory as the contents of that directory are removed when you upgrade Confluence.
You may decide to move the certificate to a custom location. If your certificate is not in the default location, you'll need to update your server configuration file as outlined below, so that Tomcat can find the certificate.
Add the attribute
Connectorelement, so that the element looks like this:
<Connector port="8443" maxHttpHeaderSize="8192" maxThreads="150" minSpareThreads="25" protocol="org.apache.coyote.http11.Http11Nio2Protocol" enableLookups="false" disableUploadTimeout="true" acceptCount="100" scheme="https" secure="true" clientAuth="false" sslProtocol="TLSv1.2" sslEnabledProtocols="TLSv1.2" SSLEnabled="true" URIEncoding="UTF-8" keystorePass="<MY_CERTIFICATE_PASSWORD>" keystoreFile="<MY_CERTIFICATE_LOCATION>"/>
- Replace the text
<MY_CERTIFICATE_LOCATION>with the path to your certificate, including the path and the name of the
- Save the configuration file.
Step 4. Change your confluence base URL to HTTPS
- In your browser, go to . > General Configuration
- Click Edit.
- Change the Server Base URL to HTTPS. See the documentation on configuring the server base URL.
- Restart Confluence and access Confluence on
Step 5. Add a security constraint to redirect all URLs to HTTPS
Although HTTPS is now activated and available, the old HTTP URLs (
web.xml. This will cause Tomcat to redirect requests that come in on a non-SSL port.
- Check whether your Confluence site uses the RSS macro. If your site has the RSS macro enabled, you may need to configure the URL redirection with a firewall rule, rather than by editing the
web.xmlfile. Skip the steps below and follow the steps on the RSS Feed Macro page instead.
- Otherwise, Edit the file at
Add the following declaration to the end of the file, before the
<security-constraint> <web-resource-collection> <web-resource-name>Restricted URLs</web-resource-name> <url-pattern>/</url-pattern> </web-resource-collection> <user-data-constraint> <transport-guarantee>CONFIDENTIAL</transport-guarantee> </user-data-constraint> </security-constraint>
- Restart Confluence and access . You should be redirected to .
Confluence has two web.xml files. The other one is at
<CONFLUENCE_INSTALLATION>/conf/web.xml. Please only add the security constraints to
<CONFLUENCE_INSTALLATION>/confluence/WEB-INF/web.xml, as described above.
- Background information on generating a certificate: The '
keytool -genkeypair' command generates a key pair consisting of a public key and the associated private key, and stores them in a keystore. The command packages the public key into an X.509 v3 self-signed certificate, which is stored as a single-element certificate chain. This certificate chain and the private key are stored in a new keystore entry, identified by the
aliasthat you specify in the command. The Java 11 documentation has a good overview of the utility.
- Custom SSL port: If you have changed the port that the SSL connector is running on from the default value of 8443, you must update the
redirectPortattribute of the standard HTTP connector to reflect the new SSL port. Tomcat needs this information to know which port to redirect to when an incoming request needs to be secure.
Multiple instances on the same host: When running more than one instance on the same host, it is important to specify the address attribute in the
<CONFLUENCE_INSTALLATION>/conf/server.xmlfile because by default the connector will listen on all available network interfaces, so specifying the address will prevent conflicts with connectors running on the same default port. See the Tomcat Connector documentation for more about setting the address attribute:
<Connector port="8443" address="your.confluence.url.com" maxHttpHeaderSize="8192" maxThreads="150" minSpareThreads="25" protocol="org.apache.coyote.http11.Http11Nio2Protocol" enableLookups="false" disableUploadTimeout="true" acceptCount="100" scheme="https" secure="true" clientAuth="false" sslProtocol="TLSv1.2" sslEnabledProtocols="TLSv1.2" SSLEnabled="true" URIEncoding="UTF-8" keystorePass="<MY_CERTIFICATE_PASSWORD>" keystoreFile="<MY_CERTIFICATE_LOCATION>"/>
- HTTPS must be configured for your whole site. It can't be enabled for individual pages or spaces.
- Before you upgrade Confluence, make a note of the changes you have made to your
web.xmlfiles. It is always best to re-apply these changes manually after upgrading, rather than copying over your existing files.
- TLS 1.2 recommended. The Confluence Server mobile app requires TLS 1.2. There are also known issues running Confluence with TLS 1.3, and connecting to other applications using TLS1.3. If you use Jira and Confluence together, we recommend configuring both applications to use TLS 1.2.
- Check the Confluence knowledge base articles on troubleshooting SSL
Problems with Internet Explorer being unable to download attachments: Applying SSL site wide can prevent IE from downloading attachments correctly. To fix this problem, edit
<CONFLUENCE_INSTALLATION>/conf/server.xmland add the following line within the
<Context ... />element:
<Valve className="org.apache.catalina.authenticator.NonLoginAuthenticator" disableProxyCaching="true" securePagesWithPragma="false" />
- SSL Configuration HOW-TO in the Apache Tomcat 9.0 documentation
- keytool - Key and Certificate Management Tool in the Java 11 documentation