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Update SSH Compression recommendation to reflect modern OpenSSH behavior - #137

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harshvasudeva:fix-ssh-compression-recommendation
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Update SSH Compression recommendation to reflect modern OpenSSH behavior#137
harshvasudeva wants to merge 1 commit into
imthenachoman:masterfrom
harshvasudeva:fix-ssh-compression-recommendation

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Summary

  • Updates the Compression recommendation in sshd_config from no to yes, with a comment explaining why.
  • OpenSSH moved to delayed (post-authentication) compression by default in 6.7, and removed pre-authentication compression support entirely in 7.4 (2016). The compression-oracle attack surface that motivated the original Compression no recommendation no longer exists on any currently supported OpenSSH version.

Fixes #117

References

OpenSSH moved to delayed (post-authentication) compression by default
in 6.7, and removed pre-authentication compression support entirely in
7.4 (2016). The compression-oracle attack surface that motivated the
original `Compression no` recommendation no longer exists on any
currently supported OpenSSH version, so `Compression yes` is safe.

Fixes imthenachoman#117
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sshd_config compression option no longer a security risk

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