# Configuring the Zowe APIs

Review the security considerations for Zowe APIs and learn how to prevent the Denial of Service (DoS) attacks.

The default configuration before Zowe version 1.14.0 contains Data sets and Unix files and Jobs API microservices which might be vulnerable to DoS attacks in the form of slow https attacks. You can add additional configuration to the start script of these components in order to prevent resource starvation via slow https attacks.

  • To update the configuration of the Data sets and Unix files component, modify the start.sh script within the runtime component directory /zowe/runtime/components/files-api/bin.
  • To update the configuration of the Jobs component, modify the start.sh script within the runtime component directory /zowe/runtime/components/jobs-api/bin.

Ensure that the -Dserver.connection-timeout=8000 parameter is set. This parameter specifies how long the component waits to receive all the required information from the client that makes a request.

See a snippet of a configured start.sh script for the Jobs component as follows:

_BPX_JOBNAME=${ZOWE_PREFIX}${COMPONENT_CODE} java -Xms16m -Xmx512m -Dibm.serversocket.recover=true -Dfile.encoding=UTF-8 \
    -Djava.io.tmpdir=/tmp -Xquickstart \
    -Dserver.port=${JOBS_API_PORT} \
    -Dcom.ibm.jsse2.overrideDefaultTLS=true \
    -Dserver.ssl.keyAlias=${KEY_ALIAS} \
    -Dserver.ssl.keyStore=${KEYSTORE} \
    -Dserver.ssl.keyStorePassword=${KEYSTORE_PASSWORD} \
    -Dserver.ssl.keyStoreType=${KEYSTORE_TYPE} \
    -Dserver.compression.enabled=true \
    -Dserver.connection-timeout=8000 \
    -Dconnection.httpsPort=${GATEWAY_PORT} \
    -Dconnection.ipAddress=${ZOWE_EXPLORER_HOST} \
    -Dspring.main.banner-mode=off \
    -Djava.protocol.handler.pkgs=com.ibm.crypto.provider \
    -jar ${ROOT_DIR}/components/jobs-api/bin/jobs-api-server-1.0.0-boot.jar &

In version 1.14.0 and later, the preceding snippet reflects the default configuration.