ssh-audit/test/docker/expected_results/openssh_8.0p1_test2.txt

# general
(gen) banner: SSH-2.0-OpenSSH_8.0
(gen) software: OpenSSH 8.0
(gen) compatibility: OpenSSH 7.4+, Dropbear SSH 2020.79+
(gen) compression: enabled (zlib@openssh.com)

# key exchange algorithms
(kex) curve25519-sha256                     -- [warn] does not provide protection against post-quantum attacks
                                            `- [info] available since OpenSSH 7.4, Dropbear SSH 2018.76
                                            `- [info] default key exchange from OpenSSH 7.4 to 8.9
(kex) curve25519-sha256@libssh.org          -- [warn] does not provide protection against post-quantum attacks
                                            `- [info] available since OpenSSH 6.4, Dropbear SSH 2013.62
                                            `- [info] default key exchange from OpenSSH 6.5 to 7.3
(kex) ecdh-sha2-nistp256                    -- [fail] using elliptic curves that are suspected as being backdoored by the U.S. National Security Agency
                                            `- [warn] does not provide protection against post-quantum attacks
                                            `- [info] available since OpenSSH 5.7, Dropbear SSH 2013.62
(kex) ecdh-sha2-nistp384                    -- [fail] using elliptic curves that are suspected as being backdoored by the U.S. National Security Agency
                                            `- [warn] does not provide protection against post-quantum attacks
                                            `- [info] available since OpenSSH 5.7, Dropbear SSH 2013.62
(kex) ecdh-sha2-nistp521                    -- [fail] using elliptic curves that are suspected as being backdoored by the U.S. National Security Agency
                                            `- [warn] does not provide protection against post-quantum attacks
                                            `- [info] available since OpenSSH 5.7, Dropbear SSH 2013.62
(kex) diffie-hellman-group-exchange-sha256 (4096-bit) -- [warn] does not provide protection against post-quantum attacks
                                                      `- [info] available since OpenSSH 4.4
                                                      `- [info] OpenSSH's GEX fallback mechanism was triggered during testing. Very old SSH clients will still be able to create connections using a 2048-bit modulus, though modern clients will use 4096. This can only be disabled by recompiling the code (see https://github.com/openssh/openssh-portable/blob/V_9_4/dh.c#L477).
(kex) diffie-hellman-group16-sha512         -- [warn] does not provide protection against post-quantum attacks
                                            `- [info] available since OpenSSH 7.3, Dropbear SSH 2016.73
(kex) diffie-hellman-group18-sha512         -- [warn] does not provide protection against post-quantum attacks
                                            `- [info] available since OpenSSH 7.3
(kex) diffie-hellman-group14-sha256         -- [warn] 2048-bit modulus only provides 112-bits of symmetric strength
                                            `- [warn] does not provide protection against post-quantum attacks
                                            `- [info] available since OpenSSH 7.3, Dropbear SSH 2016.73
(kex) diffie-hellman-group14-sha1           -- [fail] using broken SHA-1 hash algorithm
                                            `- [warn] 2048-bit modulus only provides 112-bits of symmetric strength
                                            `- [warn] does not provide protection against post-quantum attacks
                                            `- [info] available since OpenSSH 3.9, Dropbear SSH 0.53

# host-key algorithms
(key) ssh-ed25519                           -- [info] available since OpenSSH 6.5, Dropbear SSH 2020.79
(key) ssh-ed25519-cert-v01@openssh.com (256-bit cert/256-bit ssh-ed25519 CA) -- [info] available since OpenSSH 6.5

# encryption algorithms (ciphers)
(enc) chacha20-poly1305@openssh.com         -- [warn] vulnerable to the Terrapin attack (CVE-2023-48795), allowing message prefix truncation
                                            `- [info] available since OpenSSH 6.5, Dropbear SSH 2020.79
                                            `- [info] default cipher since OpenSSH 6.9
(enc) aes128-ctr                            -- [info] available since OpenSSH 3.7, Dropbear SSH 0.52
(enc) aes192-ctr                            -- [info] available since OpenSSH 3.7
(enc) aes256-ctr                            -- [info] available since OpenSSH 3.7, Dropbear SSH 0.52
(enc) aes128-gcm@openssh.com                -- [info] available since OpenSSH 6.2
(enc) aes256-gcm@openssh.com                -- [info] available since OpenSSH 6.2

# message authentication code algorithms
(mac) umac-64-etm@openssh.com               -- [warn] using small 64-bit tag size
                                            `- [info] available since OpenSSH 6.2
(mac) umac-128-etm@openssh.com              -- [info] available since OpenSSH 6.2
(mac) hmac-sha2-256-etm@openssh.com         -- [info] available since OpenSSH 6.2
(mac) hmac-sha2-512-etm@openssh.com         -- [info] available since OpenSSH 6.2
(mac) hmac-sha1-etm@openssh.com             -- [fail] using broken SHA-1 hash algorithm
                                            `- [info] available since OpenSSH 6.2
(mac) umac-64@openssh.com                   -- [warn] using encrypt-and-MAC mode
                                            `- [warn] using small 64-bit tag size
                                            `- [info] available since OpenSSH 4.7
(mac) umac-128@openssh.com                  -- [warn] using encrypt-and-MAC mode
                                            `- [info] available since OpenSSH 6.2
(mac) hmac-sha2-256                         -- [warn] using encrypt-and-MAC mode
                                            `- [info] available since OpenSSH 5.9, Dropbear SSH 2013.56
(mac) hmac-sha2-512                         -- [warn] using encrypt-and-MAC mode
                                            `- [info] available since OpenSSH 5.9, Dropbear SSH 2013.56
(mac) hmac-sha1                             -- [fail] using broken SHA-1 hash algorithm
                                            `- [warn] using encrypt-and-MAC mode
                                            `- [info] available since OpenSSH 2.1.0, Dropbear SSH 0.28

# fingerprints
(fin) ssh-ed25519: SHA256:UrnXIVH+7dlw8UqYocl48yUEcKrthGDQG2CPCgp7MxU

# algorithm recommendations (for OpenSSH 8.0)
(rec) -diffie-hellman-group14-sha1          -- kex algorithm to remove 
(rec) -ecdh-sha2-nistp256                   -- kex algorithm to remove 
(rec) -ecdh-sha2-nistp384                   -- kex algorithm to remove 
(rec) -ecdh-sha2-nistp521                   -- kex algorithm to remove 
(rec) -hmac-sha1                            -- mac algorithm to remove 
(rec) -hmac-sha1-etm@openssh.com            -- mac algorithm to remove 
(rec) +rsa-sha2-256                         -- key algorithm to append 
(rec) +rsa-sha2-512                         -- key algorithm to append 
(rec) !diffie-hellman-group-exchange-sha256 -- kex algorithm to change (increase modulus size to 3072 bits or larger) 
(rec) -chacha20-poly1305@openssh.com        -- enc algorithm to remove 
(rec) -curve25519-sha256                    -- kex algorithm to remove 
(rec) -curve25519-sha256@libssh.org         -- kex algorithm to remove 
(rec) -diffie-hellman-group14-sha256        -- kex algorithm to remove 
(rec) -diffie-hellman-group16-sha512        -- kex algorithm to remove 
(rec) -diffie-hellman-group18-sha512        -- kex algorithm to remove 
(rec) -hmac-sha2-256                        -- mac algorithm to remove 
(rec) -hmac-sha2-512                        -- mac algorithm to remove 
(rec) -umac-128@openssh.com                 -- mac algorithm to remove 
(rec) -umac-64-etm@openssh.com              -- mac algorithm to remove 
(rec) -umac-64@openssh.com                  -- mac algorithm to remove 

# additional info
(nfo) For hardening guides on common OSes, please see: <https://www.ssh-audit.com/hardening_guides.html>