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The SSH daemon must be configured to use only the SSHv2 protocol.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
|---|---|---|---|---|
| V-38607 | RHEL-06-000227 | SV-50408r1_rule | High |
| Description |
|---|
| SSH protocol version 1 suffers from design flaws that result in security vulnerabilities and should not be used. |
| STIG | Date |
|---|---|
| Red Hat Enterprise Linux 6 Security Technical Implementation Guide | 2018-03-01 |
Details
| Check Text ( C-46165r1_chk ) |
|---|
| To check which SSH protocol version is allowed, run the following command: # grep Protocol /etc/ssh/sshd_config If configured properly, output should be Protocol 2 If it is not, this is a finding. |
| Fix Text (F-43555r1_fix) |
|---|
| Only SSH protocol version 2 connections should be permitted. The default setting in "/etc/ssh/sshd_config" is correct, and can be verified by ensuring that the following line appears: Protocol 2 |