Splunk forwarder text masking

[gchkhikvadzecar]

hello
I need help. for masking text in .log file with splunk forwarder i have 16 numbers like 1111-2222-3333-4444 I would like to be XXXX-XXXX-XXXX-4444.

thanks in advance

[jbsplunk]

detailed instructions on this can be found here:

http://www.splunk.com/base/Documentation/latest/Data/Anonymizedatawithsed