How to set HSTS header in HAProxy
Environment
- Red Hat Enterprise Linux (RHEL) 7.9
- HAProxy
Issue
- Security scanner detects vulnerability
HSTS Missing From HTTPS Server (RFC 6797)- Protocol = TCP, Port = 443
- The security scanner reports
The remote HTTPS server does not send the HTTP "Strict-Transport-Security" header
Resolution
- Set the following in
frontendsection (/etc/haproxy/haproxy.cfg):
http-response set-header Strict-Transport-Security max-age=16000000;\ includeSubDomains;\ preload;
- Restart haproxy and confirm the status:
# systemctl restart haproxy
# systemctl status haproxy -l
Refer to the following HAProxy blog for more information:
HAProxy & HTTP Strict Transport Security (HSTS)
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