{
  "gex": {
    "1024": {
      "g": 2,
      "p": 154067266396939542649477786989185246326972329227354082117465153687565448762165312464217098764495735400448920074568765934646366109539476631699137604671343954500193640444570473536623188627358578439774307376164792106148598666338930933731316602274985044716679151360726594778343503292557570515634106485347364922883
    },
    "2048": {
      "g": 5,
      "p": 27563193761019613247548371515177384316847824084225106575480908301740963029577884518805700103933765448879089250317670699933971166856529337504768586720594415576825536007382135694131716027111714061100841761749822020754156419143810430565148835961970956363111754308338096248801098929382458584828572042568833550036021892768381735827949705413332687427015324170803133885714537808622879781418431109894681339228328166404895494906516248573754651270645933469226846071724872274977032213549845864353958976270035758083448230949065801706382212021676539586755532340818103650910602731316026640461852485541663126139304916917947307600767
    },
    "3072": {
      "g": 5,
      "p": 5140771135006312636317753087690150777056602014012377267562206849083564460435361131947860519660491834134255596660834746356729494024265640751030812220753061459932017775854688521222089980489579327491092600300775081636246704542027248839443360190701451098221815997513224503017953475685091508582069717212184201253911763633296246701028497913550828312719253688395067096242433660289932059788120127395296814625600006586480541467992346585835189376261941690520653673663851141177352711383596009861567213442932833433407865624856301260421377458033054679321442011995336326893933683693303319797024715151338655090349809418993251203798979912008629627704670065148197000233126055841634698220084434534397514427510893659046357452119840847620293337065480085109029076116455312375380567425248305366957166565936070109109181200188379113412700961483239454696971079273331141531570185240576196168896237468617982055189482835894256749640573967498674106356207
    },
    "4096": {
      "g": 2,
      "p": 976951295264818423814145019577337453096150708929133947663617059780531823187267669457274376239922990754565873607169297360130845448890187786417291079028249783343691789029846601268451296215690213314903456083541355333577410427311881447971805367287874755208402111333422968368451979967217112619004757239404543838081056965194576102381572120583895519909508502077839433017599462987534790187172217008688898403493699506006892763021401178801686094777652418481981973197885366829425516267223099115519867835559992580606475071986737636731536139151008910349139549914420903767704918705510727888937892264183257416630361488728759325665204922817978833631452181366703578751176215779036039400699827111940559816332514905675631290180232033979396358604934908399487110559746953814910475411470091844316895516479895890496829257363243806878927318973639089666158411572986024413229580732689027574150715667833718324676812987145613179913019883840857808049641967605742131995345962765802322558278466405708472375287654348164304900134737497706307550004663308994669291588750190858473103742825980828087081827089508559983559563488318286456702229164823620033123459216766651465604306009327293755006068253526975443215723337098424636939323727106901403320003615330611943220337267
    },
    "6144": {
      "g": 2,
      "p": 33293746786147673774222533530851272938303027863929513764103892064118967014764084151111560851467983733005509855353854645301193284465111583172343935888436158155090096907761746082174811909691342053065035368024946576968129074842208596824581593514273043357503906213427278568838746595035461638085999612356786971245266196389105021839967285861337888992314652859085197634302385859171825978770244645194270272579370089238704352313564920013461660323823016831723996805101702242904141291417980381043280464826593671154348959864563040187488742038586779930399420690770823815551549250940378834348249025650404293727194620742521174392434844305571796999773715519633658365961233970135044440477993136401061712972496668327669233024237189715216392027083164673233684153811509838297394111241064657372604346857942839402413706707283083214721812047304849752174468870050542958319446704274811896229599074176456816427787053703958557001742695124044067361156263918215242327036168889067612359827737869152501420693510157870822690839281330180305462277089464919250541194114231665809943414806866860810266267027067289650758144930208019673789257412713091238725125037788173197595429913492092732726175122597304099275266579820315365772610362838827684128455630375746829184094314169745923152560696612623744982029783275048852460965079842997076293554182074499564537888800618827023368099216610431055797599052112422215662963870667693163157348920210930818847059197660297752953833058483819106596584190455149912427696261685641842062027005167631946118391973235185386047708448215586915438543157292616695236916688149724142290736115884992209651881542490335551802355073505356720653450690923449115888222514806941549286103318781667131804304014833855268761023108005565454762223559791919778785529923592156951726315447006108848969071698897312783855966340541413864986584895040990704587891885253555881388444153501803
    },
    "768": "EOF",
    "8192": {
      "g": 5,
      "p": 921151750808717809911100359031916761579010035268259577686625577751619222467132552189494356777244002935622645429061396510006810139440062515611886696556860905109277940795126760565234325299607849913984986156946165420182514238249447341956573133510690387702428306483549696138756324272874883794956346761923550958394823239001526859949519241557201328167378131680766825550795886366456729624616058674222749616324344776300141265063487627158775052735505400571873836376227630694264652345671124188600876205054215546890452986592365517246824454076505355177117881410112952776548517913337482738058056353981133509206131941820563341667456936466146984650759109032933695391740926176665022459838431544002265962147973399464244960001222103022105700304517185823289285857899709910482311894497239032419331481909930476648421289306539385440834324066593134362772354652775509454124457081547716816169835577610970861162932562840387919813077480313475799475940722798474427722282540642480297286767594172697113431846490902166435780853609827865767921924399352420079658031498792188795078613549912814163265454864458049344694138614263926805584354063704029459505865575934403610803322949276040737262520061210482517915067908448172726355666633074938213857573101645458301472515791679526681338153764991071828365367694915366461525073756239226379899609113902515134161757516287895693880204160275390632435448474535060989870013599905348932693048491549273548368250209954146356642855104794779078402694983284306698357560575018323323060233783110120581106471281268001561596896224587920337944515081648123414674884143401211154053445272477770600685896609294094229030531166428630895874718804301831600238596623140221638728716705471635634345331538067086854335459156515469959688166460235387334043102498432642396479020656193590967827016292162421126430020111701252070081549952415912327288512863849001860456365577696677346417943239217174574448877729308824094659123954223629684165841253002794134664683690992822459177696374352486033358480266284035899510529152129154140340980509830062788417101844358318484034088679148154809336732401862619676924517042212166007125448871569224897847943250755620304869226416392374510226226596289894633816569746198382581313315301065298814743244713864377684470845843269709685799172911002005511331149460244912132269438344537426103496127553723873205762277916050349439096403559361049585639522421547364898017133065675620086044973868891539025785391606586883233461672533943456594304883306773132993396766798548812703
    }
  },
  "host_keys": {
    "ssh-ed25519": {
      "algorithm": "ssh-ed25519",
      "ascii": "AAAAC3NzaC1lZDI1NTE5AAAAIGGig1N2uaLuZZNBeZsJ9WJBWxgMRoXgIMLOdnZW4XeC",
      "fingerprint": "97:43:c8:fc:16:08:12:c4:cf:fc:d3:bf:65:b8:5f:cf",
      "n": 44161481916021157694034048526142410784085128060934523714955041038724428298114
    },
    "ssh-rsa": {
      "algorithm": "ssh-rsa",
      "ascii": "AAAAB3NzaC1yc2EAAAABIwAAAQEAxmwcHEwigjMuh8kDMpStcEkI0uubKAR8j7FENDkV/c3+WKCUDNk91ggbuD/05L8KfIbAA8HuUITiSNproGJaZ9UjikGTXWqB0IwUsLpifYRh0cjI1/u8jJNljynTa9xubkusYdASO1flfp2Ir3iqgD4GnPm5jI3WAqFDqgREoLcnttCpjoNmawjkHhV8pGotnLLXhHW3wv4xGMxUgPbyYTAWt8aXBPQ10MtMB5YeK4hw7Ba0MCH6JGom8kgX/MhVB0jB9rlnmGPkZpXAd9+vxTjZUlF1YPIzx0Z+ro0FALq5z7wJg0vig1am8HKnyqqhOeth4KEOUd9BBNfCYx0p6w==",
      "e": 35,
      "fingerprint": "b3:5d:c1:fb:94:69:ad:a4:1b:b9:b9:51:95:52:2a:1d",
      "n": 25048495315930507765837919557148519973715356770388346893568952160721647398728424587898540536324094492863351062489417657817139497886081640034668611452833338418881386195349894590132091262941968177529647292199215596071921580789091640804539476318147208605287722628195407227198677828263231611317640612209836583400186292320573572631379676638341908975933178946755006752680503851842007944014363062163494942263093452956056978247228533707000526454064609610331791028640551933523616522604079294321387533938522405160647047770143465805736201518715979053379004728378800712040435420525457844911005850866944759015516849662439194438123
    }
  },
  "ident": "SSH-2.0-OpenSSH_7.4",
  "ip": "139.184.24.30",
  "supported": {
    "compression_algorithms_client_to_server": [
      "none",
      "zlib@openssh.com"
    ],
    "compression_algorithms_server_to_client": [
      "none",
      "zlib@openssh.com"
    ],
    "encryption_algorithms_client_to_server": [
      "aes256-ctr",
      "aes192-ctr",
      "aes128-ctr",
      "aes256-gcm@openssh.com",
      "aes128-gcm@openssh.com",
      "chacha20-poly1305@openssh.com"
    ],
    "encryption_algorithms_server_to_client": [
      "aes256-ctr",
      "aes192-ctr",
      "aes128-ctr",
      "aes256-gcm@openssh.com",
      "aes128-gcm@openssh.com",
      "chacha20-poly1305@openssh.com"
    ],
    "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-sha1",
      "hmac-sha2-512",
      "hmac-sha2-512-etm@openssh.com",
      "hmac-sha2-256-etm@openssh.com",
      "umac-128-etm@openssh.com"
    ],
    "mac_algorithms_server_to_client": [
      "hmac-sha1",
      "hmac-sha2-512",
      "hmac-sha2-512-etm@openssh.com",
      "hmac-sha2-256-etm@openssh.com",
      "umac-128-etm@openssh.com"
    ],
    "server_host_key_algorithms": [
      "ssh-ed25519",
      "ssh-rsa",
      "rsa-sha2-512",
      "rsa-sha2-256"
    ]
  }
}

SSH Report for unix.sussex.ac.uk

Score: F

Server Parameters

Server version SSH-2.0-OpenSSH_7.4
Compression none
zlib@openssh.com

Host Keys

ssh-ed25519 Generally considered secure a 
97:43:c8:fc:16:08:12:c4:cf:fc:d3:bf:65:b8:5f:cf
AAAAC3NzaC1lZDI1NTE5AAAAIGGig1N2uaLuZZNBeZsJ9WJBWxgMRoXgIMLOdnZW
4XeC
 a
ssh-rsa Generally considered secure a
2048-bit key 
b3:5d:c1:fb:94:69:ad:a4:1b:b9:b9:51:95:52:2a:1d
AAAAB3NzaC1yc2EAAAABIwAAAQEAxmwcHEwigjMuh8kDMpStcEkI0uubKAR8j7FE
NDkV/c3+WKCUDNk91ggbuD/05L8KfIbAA8HuUITiSNproGJaZ9UjikGTXWqB0IwU
sLpifYRh0cjI1/u8jJNljynTa9xubkusYdASO1flfp2Ir3iqgD4GnPm5jI3WAqFD
qgREoLcnttCpjoNmawjkHhV8pGotnLLXhHW3wv4xGMxUgPbyYTAWt8aXBPQ10MtM
B5YeK4hw7Ba0MCH6JGom8kgX/MhVB0jB9rlnmGPkZpXAd9+vxTjZUlF1YPIzx0Z+
ro0FALq5z7wJg0vig1am8HKnyqqhOeth4KEOUd9BBNfCYx0p6w==
 a
rsa-sha2-512 Generally considered secure a
2048-bit key 
b3:5d:c1:fb:94:69:ad:a4:1b:b9:b9:51:95:52:2a:1d
AAAAB3NzaC1yc2EAAAABIwAAAQEAxmwcHEwigjMuh8kDMpStcEkI0uubKAR8j7FE
NDkV/c3+WKCUDNk91ggbuD/05L8KfIbAA8HuUITiSNproGJaZ9UjikGTXWqB0IwU
sLpifYRh0cjI1/u8jJNljynTa9xubkusYdASO1flfp2Ir3iqgD4GnPm5jI3WAqFD
qgREoLcnttCpjoNmawjkHhV8pGotnLLXhHW3wv4xGMxUgPbyYTAWt8aXBPQ10MtM
B5YeK4hw7Ba0MCH6JGom8kgX/MhVB0jB9rlnmGPkZpXAd9+vxTjZUlF1YPIzx0Z+
ro0FALq5z7wJg0vig1am8HKnyqqhOeth4KEOUd9BBNfCYx0p6w==
 a
rsa-sha2-256 Generally considered secure a
2048-bit key 
b3:5d:c1:fb:94:69:ad:a4:1b:b9:b9:51:95:52:2a:1d
AAAAB3NzaC1yc2EAAAABIwAAAQEAxmwcHEwigjMuh8kDMpStcEkI0uubKAR8j7FE
NDkV/c3+WKCUDNk91ggbuD/05L8KfIbAA8HuUITiSNproGJaZ9UjikGTXWqB0IwU
sLpifYRh0cjI1/u8jJNljynTa9xubkusYdASO1flfp2Ir3iqgD4GnPm5jI3WAqFD
qgREoLcnttCpjoNmawjkHhV8pGotnLLXhHW3wv4xGMxUgPbyYTAWt8aXBPQ10MtM
B5YeK4hw7Ba0MCH6JGom8kgX/MhVB0jB9rlnmGPkZpXAd9+vxTjZUlF1YPIzx0Z+
ro0FALq5z7wJg0vig1am8HKnyqqhOeth4KEOUd9BBNfCYx0p6w==
 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
              1024-bit group. Group is less than 2048 bits
                
DB662973FB21C0B7BF21AB46AFD3E2002AE70C92DE6B9AEAFECF7B0A96D7ACB0
24B7C29DB18E70CB945FA54C7773519BC7161648AFE4939058AC40ECDBBD3636
F5BF45863117E955007C9D0F9333BB4EF62F7C9F6298AB79A309C734F3CF201C
61EBC3926ADD4E80968A65D9F60535164ACE7A7BFEDC1022002BB2BBA3006603

              		
              f
            

            

              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
                
EF7840BC7248E3E12D223BD86584358750562F5FCB298632E269C7F4347DC441
CEBCBAF5B8AD25C3A3EE85A97FC342EF2B320425ACE6A816200E4A46596E6D91
1E8E5940E4ED1F64275D1A2A1E2DC8A34E26026A8DD9D20AF2E36B2BEB467168
E516F1DF9145DBA60CE4BE46B34E918D36F581B2860BEBD153A09BF5B5134813
7CEB0BFA43FDEF5398C538CB9854BED966017DC918E4EA26E0E1A283AEA90F41
B2D27CBC34E6AA64FE7E370D532BE4A0DB2E77958CA6E570DEDA817FB91351B6
5E227BAF96383323820AC5CF785CD686E99398773DF19C1E33D7199A5104337A
D3C8CF78FE1AF5D8A4A2B8C092E1FD2688F2829E006C050257DC4C16576AB12A
C01AE40F35785586902058735024E0CF90B1DD3B547647AC6F98A70BE3CA9EF8
0E9A1E408D29FDBE7935625B9AB863891D6D30A54903DD23933303055B8E8647
51CEB7A153A841D2E1CD3C5943C7F6F1BB2836ED387BE4FB3075363317A1E813
965497F5CC621A72B1CF5B50813B418F391FB7C4530B6C19416B4A9420630127
98536BBF853166697747F39827832A3D135ABFB03BF15990787F64D25E629ED1
A6009BADF5447730445ACF2684715A84ECBC4B3A1E2C93E3EFCF4D9373E13557
40776F66353576D7359C69EAE48FCFB06CA7536F4B132BFCE6DB2FDBD687B24E
7A0AD1EBCBF887A7258C24D8AC9BB86BF847D9AC980919AD9BAF3F29FF425A73

              		
              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-sha1
              SHA1 is broken
              f
            

            

              hmac-sha2-512
              Generally considered secure
              a
            

            

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

            

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

            

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

          
        

      

      

        
Encryption

        

          
            

              aes256-ctr
              Generally considered secure
              a
            

            

              aes192-ctr
              Generally considered secure
              a
            

            

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

            

              aes256-gcm@openssh.com
              Generally considered secure
              a
            

            

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

            

              chacha20-poly1305@openssh.com
              Possibly affected by Terrapin MITM
              d