XTM 850 , XTM 860 , XTM 870 , XTM 870-F , XTM 1520 , XTM 1520-RP , XTM 1525 , XTM 1525-RP , XTM 2520 
RNG SP800-131A Revision 1 Transition
When operated in FIPS mode and the tamper evident seals installed as indicated in the Security Policy
WatchGuard® XTM Extensible Threat Management appliances are built for enterprise-grade performance with blazing throughput and numerous connectivity options. Advanced networking features include clustering, high availability (active/active), VLAN support, multi-WAN load balancing and enhanced VoIP security, plus inbound and outbound HTTPS inspection, to give the strong security enterprises need.
Diffie-Hellman (key agreement; key establishment methodology provides 112 bits of encryption strength; non-compliant less than 112 bits of encryption strength); RSA (key wrapping; key establishment methodology provides 112 bits of encryption strength); DES; RC4; MD5; AES-CCM (non-compliant); PBKDF (non-compliant)
SL8AE14 [1-5,7], SL15AE14 [6,8], SL25AE14F4  with Tamper Evident Seal Kit: SKU WG8566
Fireware XTM OS v11.6.5