You can use the Policy Enforcement Manager™ (™PEM) for header modifications by configuring insertion of content into HTML web pages, based on a PEM policy. The content inserted can be a string or TCL script, and can occur in the beginning, middle, or end of the HTML page.
Insertion of content is useful in these scenarios:
PEM inserts the content at the match tag, and, depending on the throttling level, implements:
HTTP::header replace Server \"Nginx\"