Easy-add Recurring Feeds

[JoshRandall]

02JUN2021 Update - updated post-11.4.1 script with...

• better java version checking (again)
• IP Address SAN entries and use in hosts file
• removal of previous keystore entry if using same alias for new cert

16APR2020 Update

• adding a modified script for NetWitness environments at-or-above version 11.4.1 (due to JDK 11)
• renaming the original script to indicate recommended use in pre-11.4.1 NetWitness environments

19DEC2019 Update (with props to Leonard Chvilicek ‌for pointing out several issues with the original script)

• implemented more accurate java version & path detection for JDK variable
• implemented 30 second timeout on s_client command
• implemented additional check on address of hosting server
• implemented more accurate keystore import error check
• script will show additional URLs for certs with Subject Alternate Names

In the past, I've seen a number of people ask how to enable a recurring feed from a hosting server that is using SSL/TLS, particularly when attempting to add a recurring feed hosted on the NetWitness Node0 server itself.  The issue presents itself as a "Failed to access file" error message, which can be especially frustrating when you know your CSV file is there on the server, and you've double- and triple-checked that you have the correct URL:

There are a number of blogs and KBs that cover this topic in varying degrees of detail:

• Endpoint Integ: Configure Contextual Data from Endpoint via Recurring Feed  
• Live: Create and Manage an Identity Feed 
• https://community.rsa.com/community/products/netwitness/blog/2018/03/14/a-list-two-ways-feeds-and-context-hub 

Since all the steps required to enable a recurring feed from a SSL/TLS-protected server are done via CLI (apart from the Feed Wizard in the UI), I figured it would be a good idea to put together a script that would just do everything - minus a couple requests for user input and (y/N) prompts - automatically.

The goal here is that this will quickly and easily allow people to add new recurring feeds from any server that is hosting a CSV:

Success!