Comments (5)
@vpetersson Please attach the PDF as a file.
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Let's start with these:
- Ensure SSH LogLevel is set to INFO
- Ensure SSH X11 forwarding is disabled
- Ensure SSH MaxAuthTries is set to 4 or less
- Ensure SSH IgnoreRhosts is enabled
- Ensure SSH HostbasedAuthentication is disabled
- Ensure SSH PermitUserEnvironment is disabled
- Ensure SSH LoginGraceTime is set to one minute or less
- Ensure SSH Idle Timeout Interval is configured
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20 complexity points
from agent.
20
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The good news is that all those parameters are supported on all supported distros and have the same defaults:
Param | Safe | Ubuntu 18.04 | Ubuntu 16.04 | Amazon Linux 2 | Debian Jessie |
---|---|---|---|---|---|
ClientAliveInterval | 1..300 | 0 | 0 | 0 | 0 |
ClientAliveCountMax | 0..3 | 3 | 3 | 3 | 3 |
HostbasedAuthentication | no | no | no | no | no |
IgnoreRhosts | yes | yes | yes | yes | yes |
LogLevel | INFO | INFO | INFO | INFO | INFO |
LoginGraceTime | 1..60 | 120 | 120 | 120 | 120 |
MaxAuthTries | 0..4 | 6 | 6 | 6 | 6 |
PermitUserEnvironment | no | no | no | no | no |
X11Forwarding | no | no | no | no | no |
Bad news is that we need to implement a range-based comparison in addition to equality-based that we have now.
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Related Issues (20)
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