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Services (Access Methods); Encryption; Ssh And Sftp - GE Digital Energy 1018959 Operating Manual

Snmp / web adapter
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7.2

SERVICES (ACCESS METHODS)

The table below lists the available services (access methods), highlighting the major security features for
each interface.
Interface
Local console interface
Remote console interface
SNMP Agent
File transfer
Web interface
7.3

ENCRYPTION

As stated above, the SNMP/Web adapter offers interfaces providing encryption for protecting data
confidentiality and integrity, and particularly the following:
SSH (Secure Shell)
SFTP (SSH File Transfer Protocol)
HTTPS
In this context, encryption is based on public-key cryptography schemes. Normally, the SNMP/Web
adapters will be delivered already configured with all applicable keys and certificates – should the
adapter miss these information it will generate them at first start-up (this operation may take some
time). The length of the keys used for encryption is 1024 bits, providing complex encryption and a
higher level of security.

7.3.1 SSH and SFTP

SSH allows running terminal sessions to the SNMP/Web adapter over a secure channel. SSH uses public-
key cryptography. The SSH server is authenticated using a host key as identification. Most SSH clients
display the host key fingerprint at the start of the SSH session. Below is an example from a popular SSH
client (putty):
Modifications reserved
OPM_CNT_SNM_BAS_CRD_1GB_V012.doc
Access methods
Serial cable
Telnet
SSH (Secure SHell)
SNMP
FTP
SFTP (SSH FTP)
HTTP
HTTPS (SSL)
Security features
Authentication via user/pwd pair
Authentication via user/pwd pair
Plain text
Authentication via user/pwd pair
Encrypted communication
Community Name
Plain text
Authentication via user/pwd pair
Plain text
Authentication via user/pwd pair
Encrypted communication
Authentication via user/pwd pair
Plain text
Authentication via user/pwd pair
Encrypted communication
Page 45/58
Operating Manual SNMP/Web Adapter

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