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DGS-3100 Series Gigabit Stackable Managed Switch User Manual
3. Define the SSH global setting port number in the Port (1-65535) field.
4. Click
. The SSH configuration is defined, and the device is updated.
Defining SSH Algorithm Settings
This SSH Algorithm Settings Page allows network administrators to enable a public key for SSH authentication encryption.
The following authentication keys are enabled for SSH:
• Public Key Algorithm
— Encrypts a cryptographic key pair composed of a public key and a private key. The private
key is kept secret, while the public key can be distributed. The encryption keys are mathematically similar, but a private
key cannot be derived from the public key. Messages encrypted with a public key can be decrypted with the matching
private key. The following Public Key Algorithms are supported:
– HMAC-RSA
— Supports the Hash for Message Authentication Code (HMAC) mechanism utilizing the RSA
encryption algorithm.
– HMAC-DSA —Supports the Hash for Message Authentication Code (HMAC) Digital Signature Algorithm
(DSA) encryption algorithm.
• Data Integrity Algorithm
— Validates message authentication information transmitted between two parties which
share the same key. The following Data Integrity Algorithms are supported:
– HMAC-SHA — Supports the Hash for Message Authentication Code (HMAC) Secure Hash Algorithm (SHA)
mechanism.
– HMAC MD5 — Supports the Hash for Message Authentication Code (HMAC) MD5 Message Digest (MD5)
mechanism.
• Encryption Algorithm
— Generates authentication keys used to authenticate communications between different
applications. The following Encryption Algorithms are supported
– 3DES-CBC — Supports a block size of 8 bytes (64 bits); its key size is 192 bits long. The first 8 bytes cannot
be identical to the second 8 bytes, and the second 8 bytes cannot be identical to the third 8 bytes.
– AES128 —Provides a block cipher that encrypts and decrypts digital information. The AES128 algorithm is
capable of using cryptographic 128 keys.
– AES192 — Provides a block cipher that encrypts and decrypts digital information. The AES192 algorithm is
capable of using cryptographic 192 keys.
– AES256 — Provides a block cipher that encrypts and decrypts digital information. The AES256 algorithm is
capable of using cryptographic 256 keys.
– RC4 — Supports a cipher with an up to 2048 bits key size.
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