6: Networking
EMG™ Edge Management Gateway User Guide
101
Security
Note:
FIPS 140-2 standard is not supported in the current release.
The EMG supports a security mode that complies with the FIPS 140-2 standard. FIPS (Federal
Information Processing Standard) 140-2 is a security standard developed by the United States
federal government that defines rules, regulations and standards for the use of encryption and
cryptographic services. The National Institute of Standards and Technology (NIST) maintains the
documents related to FIPS at:
http://csrc.nist.gov/publications/PubsFIPS.html
FIPS 140-2 defines four security levels, Level 1 through Level 4. The EMG unit is FIPS certified at
Level 1.
To enable FIPS mode, the
Network -> Security -> FIPS Mode
flag needs to be enabled and the
EMG unit rebooted. Each time the EMG unit is booted in FIPS mode, it will perform a power up self
test to verify the integrity of the EMG unit's cryptographic module. If there are any issues with the
integrity of the cryptographic module, FIPS mode will be disabled and the EMG unit will be
rebooted into non-FIPS mode.
When the EMG unit is running in FIPS mode, the following protocols are supported: TLS 1.0, TLS
1.1, TLS 1.2, and SSH v2. TLS 1.0 and TLS 1.1 are disabled by default for security reasons.
For SSL, the EMG unit will support the following cipher suites:
AES128-SHA
AES128-SHA256
AES128-GCM-SHA256
AES256-SHA
AES256-SHA256
AES256-GCM-SHA384
* AES signifies Advanced Encryption Scheme
SSL/secure certificates imported for use with the web server or LDAP authentication must use
either the SHA1 or SHA2 hash with a RSA public key of 1024, 2048 or 3072 bits.
For SSH, the EMG unit will support the following cipher suites:
AEAD-AES-128-GCM-SSH
AEAD-AES-256-GCM-SSH
AES128-CTR
AES256-CTR
AES192-CTR
* AEAD signifies Authenticated Encryption with Additional Data
SSH Keys imported for use with SSH authentication must use a RSA public key of 1024, 2048 or
3072 bits. SSH Keys exported by the EMG must use a RSA public key of 2048 or 3072 bits.
When the EMG unit is running in FIPS mode, the following protocols/functions will not be
supported: NIS, Kerberos, RADIUS, , Telnet/WebTelnet, WebSSH, IPSec/VPN, SSH
v1, FTP, PPP, CIFS/Samba, TCP, UDP, unencrypted LDAP, and SNMP. If any of these protocols/
functions are enabled prior to enabling FIPS mode, they will be automatically disabled.