The server config file is located under IntegrationServer/config/server.cnf.
For MWS it is in the database and needs to be extracted to the file system first.
mws.sh -s default getconfig jetty.xml
Location of the file will then be MWS/server/default/config/jetty.xml.
See MWS Administrators Guide for further informations about this.
Can you check if there is a possibility to configure your browsers to allow the ssl v3 protocol (at least temporarily until you were able to configure the servers accordingly?
Please check the following pages in Empower KB:
Summary of available Fixes for IntegrationServer (KB# 1760886):
Unfortuanetly wM 8.0 is not listed there as it is no longer supported except if you have an Extended Maintenance Agreement in place.
Please consider upgrading to wM 9.5 or newer.