SSH/5/SSHC_INSECURE_LOGIN

Message

SSH/5/SSHC_INSECURE_LOGIN: SSH client login is insecure. (ServiceType=[ServiceType], IPAddress=[IPAddress], VPNInstanceName=[VPNInstanceName], Reason=[Reason])

In VS mode, this log is supported only by the admin VS.

Description

SSH client login is successful with insecure algorithm or smaller key length.

Parameters

Parameter Name Parameter Meaning

ServiceType

Indicates the requested service type of the SSH connection.

IPAddress

Indicates IP address of the server.

VPNInstanceName

Indicates the name of the VPN instance.

Reason

Possible causes of insecure login are as follows:

-·SSH·client·connection·is·established·with·one·of·the·following·insecure·cipher·algorithms:·des_cbc,·3des_cbc,·arcfour128,·arcfour256,·aes128_cbc,·aes256_cbc,·md5,·md5_96,·sha1,·sha1_96·and·sha2_256_96: The SSH client uses one of the following insecure encryption algorithms to establish a connection: des_cbc, 3des_cbc, arcfour128, arcfour256, aes128_cbc, aes256_cbc, md5, md5_96, sha1, sha1_96, and sha2_256_96.

-·SSH·client·connection·is·established·with·one·of·the·following·insecure·HMAC·algorithms:·md5,·md5_96,·sha1,·sha1_96·and·sha2_256_96: The SSH client uses one of the following insecure HMAC authentication algorithms to establish a connection: md5, md5_96, sha1, sha1_96, and sha2_256_96.

-·Length·of·identity·key·(RSA,·DSA)·is·less·than·2048·bits: The length of the RSA/DSA key pair is less than 2048 bits.

Possible Causes

Cause 1: SSH client connection is established with one of the following insecure cipher algorithms: des_cbc, 3des_cbc, arcfour128, arcfour256, aes128_cbc, aes256_cbc, md5, md5_96, sha1, sha1_96 and sha2_256_96.

Cause 2: SSH client connection is established with one of the following insecure HMAC algorithms: md5, md5_96, sha1, sha1_96 and sha2_256_96.

Cause 3: Length of identity key (RSA, DSA) is less than 2048 bits.

Procedure

Cause 1: Use secure cipher algorithm to establish the connection like aes128_ctr and aes256_ctr.

Cause 2: Use secure HMAC algorithm to establish the connection like sha2_256.

Cause 3: Configure identity key (RSA, DSA) with length 2048 bits.

Copyright © Huawei Technologies Co., Ltd.
Copyright © Huawei Technologies Co., Ltd.
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