{
  "gex": {
    "1024": "EOF",
    "2048": {
      "g": 2,
      "p": 27672893231078482414316412291382054668961850794078055737740885327219301644519185062523772252402554472043622113499052135038014438034231013974319591759922177454902042906854207562071956105114464012639538617812152802413006824376872270593397207538940915646193407317442527833642815885546990867297219159494157722538219224320598501999223606731202211414832674646768386746416618919936967926684802530604724865683415139512386953639232897141119671159391823414462672076497688454213821940860127227742127183998157286882320495558655630141964820022469843750342248821499186469187641912775497390399744993247505467402280014319222992041603
    },
    "3072": {
      "g": 5,
      "p": 5175054779340588353586849786144680366505563673837334790820581054294754700842534366479020240016540005621125885927641963390708863183739793208880756653713659686139600715884857385144475261507869935694699816011948585170171332029002674283854825650901258017026965486602158722052719421343475066067509485302858041368266332080773331946039572497794442067057597327877030322029413318847025776818839927761556478107499002213648377029201340152459685610920194363099878398871001275336711869213616313858200583491913270052111910410231060407633125816386053759634073500319223989240814564691163285769745840521560940666058800931070258886096469889796899266014106833050284032035948051974659796051419431527095503586817863043771919051402039741075037010264761045992285666560487072740505566408086913711094879155498223636912657852688296081316652278801546924079650897913388978423388839346058027184069633227966507908979049369500450630036982661231208186056727
    },
    "4096": {
      "g": 2,
      "p": 905236604559783814049675827111332548666076021653806986459833689445582520555861254427864566301046682581237014080422955685725045351950848068094690692782912447844869002655717821901423265001874473304129053627148615037280111682311824281772296058723243025224407268371849838206596117286239966211124001304136796990128328972486456389636554777589302411516522066269022780261371120543486120557696015959107703725285076851695306197343322866681090949575739580086813693061416500704903772484621010490656097434606891813685770963938061325712664256189863414599317846265370273349487672562790644675724654720391772641153219376670089559393754713706287832703064334719453032595482012703366760177231165339138292368384397008349843323510435481922190349801086294124695144248320433520781392151089982355430823769809923865391708445630831960983134520481026119871295882885737370445887865591377407185632398518285356758253615620500753048596767063672590516529301299908355392416684646699615714907368255804011274595256509566510281155603968528121618233422537216999785425593388395011340770058217564151953761356413964664960821094984015346182031831770665977399697071298103733501889543327543551288085747473870938952581785315987921005472511377686308479867997015176530987121311619
    },
    "6144": {
      "g": 5,
      "p": 30140564761414934075194612962302792352884389861235380410631737449274475910651015081013991972790293626535016207057118573924129911532515361880111300649544258356275417348420607130097029314044190691937419049645740026766670026905293431685884219194402243337708701882779162005701608783429791542560989236723786103458129763379248027206824348141122145272207867160177360574096851535279344249532800897752406726914609404376600689779861883599665969607640439162476872672470691517319913627735027154535658951361261051744726294345537247777686945785514817093303254151311161074036588726373261924378414776521154051026781073242368470548761238426824300238615643513952971649931801191624300137537240093812436861518843201922457353084234227634532288411363695989627857917592941240965888774886386955565039807599904834196099032916665998729005080548546252190521083930373661587978923028391815137264746605927893142060932057004307309636388431183981327244777477529981935392468390523263488006945088614268904713358543431726960607360984243192344769641180419808289734517743696337166705014072670882130650661723302703044355635443407224323538548174312030772116836252557002820008758857938597506735216615021276017167979736890735370331738499677991739971021801571394684209817342755767219886991457703679886186822893432483255359205640422685298807666910415094138925946750741195740965372868426971650819192086434694357112266448700705891245108391442076703685393577970254767576441164439075947078583987160554092897412590697212026143036933471448941355569274964799263078763908503081218632507402772173878673282562474103946567931266546587125493619763818164316225959100481219718136821526098351401859651572358537924406551892623528197688498947062902466667726247128268512997123981557820446064085100456406944078234353421521152516075079119360949196145051620839417653089423042437878829088859840935677290238429539847
    },
    "768": "EOF",
    "8192": {
      "g": 2,
      "p": 844920567035376897096714194166091425070468476340963526560026424869349012827056502798006665922608958660414258327235072536643197165840222444401083723293331862873755884528026908539555598872033581826104580339125153548201173506492809210676258652433265765425161202992999643969730888914868536762791183912411662965118385615615118011238123032059505578520804514422975111570750246465998477206939157357725276626018609331320313661681237803518178058261930991256076750758771024636602638214917296296324458117031258947852643029838657325723298250228283310699075096651897803916335883395742460345863755264607935887543335728550409949236760610420027388114989596200398181593408640294571153295223332959701043125137272722209916449386687066002330442585085614323787992301006563348093677869429673809635374988152523828416331257064058024142983452879605265179772956099734748594535902438015436524667665498251175675372538246521673051215309261684077525326966826966185257122594096420438542908167370113080536526924835828686430727126977625883195760941910061876512557791787232396212763000573441352174999948812377970723898791696074760319696047516162033599867478473148786492220347306184589100721661117674575008465972808539183598719361581712709354592790595855080135265369716412704168530678123748759936261768161948144767674792362668813799600689745860043506893337327565007676536254499849876010750258546927799787601191297404768430202727463153273919923286024974944870554759015391965706230726361090909008882526369953234174926138062226513105986831650019237828966477368309984310564111688383248850971117294980009470614196591978948659777635553064920974614705905164361290078459050257672598707205238254954643308921685539966055235541220262375879124452973547439058002707133568144743174950291514769382520511781452489428050115083132813122507064031466220802038471586410446918984902124877196733311440543158009274094652006891995771829036724546435206980968760323809103480291909382233961209701934235707439231674026219494079532690835138392246369858132523042565291815118408116420776296381804637989565449216748248707870654024236296921662479148596992675841961121319486879029800899727479299849046100087866691696556338931421882400474882305423182113209815811027343550269297113299838838415260100451993793945050869592717794519668589791354036643750850786334427724582961002836976931064401194493335922445323024771029146691487688247260265262940142140190367912494786615667744534912714933148971694771387460731822723270033579279254487056538563
    }
  },
  "host_keys": {
    "ssh-ed25519": {
      "algorithm": "ssh-ed25519",
      "ascii": "AAAAC3NzaC1lZDI1NTE5AAAAIOKR5Caf+6aJp1T4PiAsy1493Dhdz6Gq9ED6CRfC89R3",
      "fingerprint": "ec:20:66:d3:50:00:3b:eb:37:45:5c:ce:bf:ff:d0:32",
      "n": -13311617993611906921088549676543583240853166987565910731219477092553252940681
    },
    "ssh-rsa": {
      "algorithm": "ssh-rsa",
      "ascii": "AAAAB3NzaC1yc2EAAAADAQABAAABAQDPTFTHbO/aEPSAqzggBik64gVffCSdwLMzqLz7Y+muJg/WwYHWkCDgJKCzMtXMsuzG7Fus9bM45n+W4n6nQxAvUivR0FpsXbkxgFijJ4CkDtLWrGZLwDPnyCtNH5SrAASFp6UEo+3+uQ3F+QwdsbyUmtYFmqtSFVD1oLd0sSs03r2X1Hi0GM3WNvSrJlrKzadVOMsPyN1WxG8S2sZBdHAWf9zJLS91ylZB9OX8MI0ogMIAxFsGxk5PBnyH06giEDfAJSHBm4tmrZzsy/6DGGjUWRpBu0UTaHB6gfEQucrqUE82kgZ3Z1vQ04kzmkiDPV7yYi5kGsQJaRIG9Bb7FTvl",
      "e": 65537,
      "fingerprint": "0d:78:6e:2e:14:35:94:9d:c8:22:c4:3a:f0:03:8d:25",
      "n": 26168969429784334027807579751350556036677405677613595926338900342326596104578402833584466129389387945345464022972303016250510245594406825622183828697801458038966363586030161526963297954142021048900739437964994065861351370232020423302893990007622069109350960478254960103834329438532032676944261846243746238481007981081287104817320690348888378865085427722070048372723532021500309282683056653112234301572444005279432442686716380484929044052943297595226284938139873868426815906068133699115859774463866104362333870382836182084806556422573994500593811864383427226179592731634464313411721684646338433893683500512882889931749
    }
  },
  "ident": "SSH-2.0-OpenSSH_7.2p2 Ubuntu-4ubuntu2.4",
  "ip": "176.58.99.199",
  "supported": {
    "compression_algorithms_client_to_server": [
      "none",
      "zlib@openssh.com"
    ],
    "compression_algorithms_server_to_client": [
      "none",
      "zlib@openssh.com"
    ],
    "encryption_algorithms_client_to_server": [
      "chacha20-poly1305@openssh.com",
      "aes256-gcm@openssh.com",
      "aes128-gcm@openssh.com",
      "aes256-ctr",
      "aes192-ctr",
      "aes128-ctr"
    ],
    "encryption_algorithms_server_to_client": [
      "chacha20-poly1305@openssh.com",
      "aes256-gcm@openssh.com",
      "aes128-gcm@openssh.com",
      "aes256-ctr",
      "aes192-ctr",
      "aes128-ctr"
    ],
    "kex_algorithms": [
      "curve25519-sha256@libssh.org",
      "diffie-hellman-group-exchange-sha256"
    ],
    "languages_client_to_server": [
      ""
    ],
    "languages_server_to_client": [
      ""
    ],
    "mac_algorithms_client_to_server": [
      "hmac-sha2-512-etm@openssh.com",
      "hmac-sha2-256-etm@openssh.com",
      "hmac-ripemd160-etm@openssh.com",
      "umac-128-etm@openssh.com",
      "hmac-sha2-512",
      "hmac-sha2-256",
      "hmac-ripemd160",
      "umac-128@openssh.com"
    ],
    "mac_algorithms_server_to_client": [
      "hmac-sha2-512-etm@openssh.com",
      "hmac-sha2-256-etm@openssh.com",
      "hmac-ripemd160-etm@openssh.com",
      "umac-128-etm@openssh.com",
      "hmac-sha2-512",
      "hmac-sha2-256",
      "hmac-ripemd160",
      "umac-128@openssh.com"
    ],
    "server_host_key_algorithms": [
      "ssh-rsa",
      "rsa-sha2-512",
      "rsa-sha2-256",
      "ssh-ed25519"
    ]
  }
}

SSH Report for floof.co.uk

Score: B

Server Parameters

Server version SSH-2.0-OpenSSH_7.2p2 Ubuntu-4ubuntu2.4
Compression none
zlib@openssh.com

Host Keys

ssh-rsa Generally considered secure a
2048-bit key 
0d:78:6e:2e:14:35:94:9d:c8:22:c4:3a:f0:03:8d:25
AAAAB3NzaC1yc2EAAAADAQABAAABAQDPTFTHbO/aEPSAqzggBik64gVffCSdwLMz
qLz7Y+muJg/WwYHWkCDgJKCzMtXMsuzG7Fus9bM45n+W4n6nQxAvUivR0FpsXbkx
gFijJ4CkDtLWrGZLwDPnyCtNH5SrAASFp6UEo+3+uQ3F+QwdsbyUmtYFmqtSFVD1
oLd0sSs03r2X1Hi0GM3WNvSrJlrKzadVOMsPyN1WxG8S2sZBdHAWf9zJLS91ylZB
9OX8MI0ogMIAxFsGxk5PBnyH06giEDfAJSHBm4tmrZzsy/6DGGjUWRpBu0UTaHB6
gfEQucrqUE82kgZ3Z1vQ04kzmkiDPV7yYi5kGsQJaRIG9Bb7FTvl
 a
rsa-sha2-512 Generally considered secure a
2048-bit key 
0d:78:6e:2e:14:35:94:9d:c8:22:c4:3a:f0:03:8d:25
AAAAB3NzaC1yc2EAAAADAQABAAABAQDPTFTHbO/aEPSAqzggBik64gVffCSdwLMz
qLz7Y+muJg/WwYHWkCDgJKCzMtXMsuzG7Fus9bM45n+W4n6nQxAvUivR0FpsXbkx
gFijJ4CkDtLWrGZLwDPnyCtNH5SrAASFp6UEo+3+uQ3F+QwdsbyUmtYFmqtSFVD1
oLd0sSs03r2X1Hi0GM3WNvSrJlrKzadVOMsPyN1WxG8S2sZBdHAWf9zJLS91ylZB
9OX8MI0ogMIAxFsGxk5PBnyH06giEDfAJSHBm4tmrZzsy/6DGGjUWRpBu0UTaHB6
gfEQucrqUE82kgZ3Z1vQ04kzmkiDPV7yYi5kGsQJaRIG9Bb7FTvl
 a
rsa-sha2-256 Generally considered secure a
2048-bit key 
0d:78:6e:2e:14:35:94:9d:c8:22:c4:3a:f0:03:8d:25
AAAAB3NzaC1yc2EAAAADAQABAAABAQDPTFTHbO/aEPSAqzggBik64gVffCSdwLMz
qLz7Y+muJg/WwYHWkCDgJKCzMtXMsuzG7Fus9bM45n+W4n6nQxAvUivR0FpsXbkx
gFijJ4CkDtLWrGZLwDPnyCtNH5SrAASFp6UEo+3+uQ3F+QwdsbyUmtYFmqtSFVD1
oLd0sSs03r2X1Hi0GM3WNvSrJlrKzadVOMsPyN1WxG8S2sZBdHAWf9zJLS91ylZB
9OX8MI0ogMIAxFsGxk5PBnyH06giEDfAJSHBm4tmrZzsy/6DGGjUWRpBu0UTaHB6
gfEQucrqUE82kgZ3Z1vQ04kzmkiDPV7yYi5kGsQJaRIG9Bb7FTvl
 a
ssh-ed25519 Generally considered secure a 
ec:20:66:d3:50:00:3b:eb:37:45:5c:ce:bf:ff:d0:32
AAAAC3NzaC1lZDI1NTE5AAAAIOKR5Caf+6aJp1T4PiAsy1493Dhdz6Gq9ED6CRfC
89R3
 a

Key Exchange

curve25519-sha256@libssh.org Generally considered secure a
diffie-hellman-group-exchange-sha256 Generally considered secure a
768 bit request Server refused the request 

              		
              0
            

            

              1024 bit request
              Server refused the request
                

              		
              0
            

            

              2048 bit request
              2048-bit group
                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              		
              a
            

            

              3072 bit request
              3072-bit group
                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              		
              a
            

            

              4096 bit request
              4096-bit group
                
DDE41D7021F9DF8240D0BD8E14CE1E374A4FFDD073767E84C8C347B6F8327312
77F9D333B8BC7CD96ED164DF5C6F26E46E4BAF0AA7C87B26CE3E11042C1BDDF7
6095E50D7772E5DC0C48EBA0E41EC92EAFA655DA1B6C614E1F0F9AD815BD7505
AA9B8A265D13956B5A26141EE812404DE13B821C9B7BCA9982B8CF7D862F8E8A
373FEFEE4AE46EC2122519A2AD896ED18CAECEF314D1B98C83358B6E9D2F3BC5
8C1688F162E3CF1FF58E57E7B9E14BB37C9C9E9692E57C42937141C226E84C35
B42DED9055A7F366A61C3CB4899B499278ED4C729CC1DE54827E882290F9FC13
F7F1488F897698EA62A99468D6F3ED0561816C39B8279154FC7A8E453CCC4EB1
ABC777A397B694E1B9866C2495489F94721A3351B252D05FE6C7857929B34C19
A8EB42ABED88FA370DABCA83A245DC35CFB399824D127507AD540054C647F61C
6BD11CAFC3FE5277A1014DF6B538BC8BFE009315BCD60E020DAB840B8A4219EB
A4E349680BC7CA3A9BC36164A3D36E325C530B178747814F575899126B307EB6
3F910DDE0F09E5056B2F9F7E230A42C11DDD34A9B23A64090C2FF9C7F3DD696E
6828613E74A64CFC4046ECFA997BE84981430D8A7F8AEC63001E50AF9F556567
A0065A9A013A66A2737CEEE468D6A15002358AC648D862B0618E6DD6A98BBBE9
E68174D9C9FE4568BB2D12083CF6892B6B8D58307944955A987F37918A32FF83

              		
              a
            

            

              6144 bit request
              6144-bit group
                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              		
              a
            

            

              8192 bit request
              8192-bit group
                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              		
              a
            

          
        

      

      

        
Message Authentication

        

          
            

              hmac-sha2-512-etm@openssh.com
              Generally considered secure
              a
            

            

              hmac-sha2-256-etm@openssh.com
              Generally considered secure
              a
            

            

              hmac-ripemd160-etm@openssh.com
              Generally considered secure
              a
            

            

              umac-128-etm@openssh.com
              Generally considered secure
              a
            

            

              hmac-sha2-512
              Generally considered secure
              a
            

            

              hmac-sha2-256
              Generally considered secure
              a
            

            

              hmac-ripemd160
              Generally considered secure
              a
            

            

              umac-128@openssh.com
              Generally considered secure
              a
            

          
        

      

      

        
Encryption

        

          
            

              chacha20-poly1305@openssh.com
              Generally considered secure
              a
            

            

              aes256-gcm@openssh.com
              Generally considered secure
              a
            

            

              aes128-gcm@openssh.com
              Consider upgrading to 192- or 256- bits.
              b
            

            

              aes256-ctr
              Generally considered secure
              a
            

            

              aes192-ctr
              Generally considered secure
              a
            

            

              aes128-ctr
              Consider upgrading to 192- or 256-bit
              b