# general (gen) banner: SSH-2.0-dropbear_2019.78 (gen) software: Dropbear SSH 2019.78 (gen) compatibility: OpenSSH 7.4+ (some functionality from 6.6), Dropbear SSH 2018.76+ (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-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) 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-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) 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 (kex) kexguess2@matt.ucc.asn.au -- [warn] does not provide protection against post-quantum attacks `- [info] available since Dropbear SSH 2013.57 # host-key algorithms (key) ecdsa-sha2-nistp256 -- [fail] using elliptic curves that are suspected as being backdoored by the U.S. National Security Agency  `- [warn] using weak random number generator could reveal the key `- [info] available since OpenSSH 5.7, Dropbear SSH 2013.62 (key) ssh-rsa (1024-bit) -- [fail] using broken SHA-1 hash algorithm  `- [fail] using small 1024-bit modulus `- [info] available since OpenSSH 2.5.0, Dropbear SSH 0.28 `- [info] deprecated in OpenSSH 8.8: https://www.openssh.com/txt/release-8.8 (key) ssh-dss -- [fail] using small 1024-bit modulus  `- [warn] using weak random number generator could reveal the key `- [info] available since OpenSSH 2.1.0, Dropbear SSH 0.28 `- [info] disabled in OpenSSH 7.0: https://www.openssh.com/txt/release-7.0 # encryption algorithms (ciphers) (enc) aes128-ctr -- [info] available since OpenSSH 3.7, Dropbear SSH 0.52 (enc) aes256-ctr -- [info] available since OpenSSH 3.7, Dropbear SSH 0.52 (enc) aes128-cbc -- [warn] using weak cipher mode `- [info] available since OpenSSH 2.3.0, Dropbear SSH 0.28 (enc) aes256-cbc -- [warn] using weak cipher mode `- [info] available since OpenSSH 2.3.0, Dropbear SSH 0.47 (enc) 3des-ctr -- [fail] using broken & deprecated 3DES cipher `- [info] available since Dropbear SSH 0.52 (enc) 3des-cbc -- [fail] using broken & deprecated 3DES cipher  `- [warn] using weak cipher mode  `- [warn] using small 64-bit block size `- [info] available since OpenSSH 1.2.2, Dropbear SSH 0.28 # message authentication code algorithms (mac) hmac-sha1-96 -- [fail] using broken SHA-1 hash algorithm  `- [warn] using encrypt-and-MAC mode `- [info] available since OpenSSH 2.5.0, Dropbear SSH 0.47 (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 (mac) hmac-sha2-256 -- [warn] using encrypt-and-MAC mode `- [info] available since OpenSSH 5.9, Dropbear SSH 2013.56 # fingerprints (fin) ssh-rsa: SHA256:CDfAU12pjQS7/91kg7gYacza0U/6PDbE04Ic3IpYxkM # algorithm recommendations (for Dropbear SSH 2019.78) (rec) -3des-cbc -- enc algorithm to remove  (rec) -3des-ctr -- enc algorithm to remove  (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) -ecdsa-sha2-nistp256 -- key algorithm to remove  (rec) -hmac-sha1 -- mac algorithm to remove  (rec) -hmac-sha1-96 -- mac algorithm to remove  (rec) -ssh-dss -- key algorithm to remove  (rec) -ssh-rsa -- key algorithm to remove  (rec) +twofish128-ctr -- enc algorithm to append  (rec) +twofish256-ctr -- enc algorithm to append  (rec) -aes128-cbc -- enc algorithm to remove  (rec) -aes256-cbc -- 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) -hmac-sha2-256 -- mac algorithm to remove  (rec) -kexguess2@matt.ucc.asn.au -- kex algorithm to remove  # additional info (nfo) For hardening guides on common OSes, please see: