サーバーが公開鍵認証のみを許可しているため、接続がブロックされました[PuTTY致命的エラー]

Question

私がホストするEC2インスタンスを作成したところDjangoプロジェクトで、Windows 10（会社のPC）を使用しているため、PuTTY経由でインスタンスに接続しようとしています。

Amazon LinuxおよびUbuntu Server 18.04のディストリビューションで documentation 手順を実行しようとしましたが、常にPuTTYから次のエラーが発生します。

サーバーが公開鍵認証のみを許可しているため、接続がブロックされましたネットワーク管理者に連絡してください。

PuTTYイベントログ：

2019-07-31 11:02:59 Looking up Host "ec2-54-94-181-255.sa-east-1.compute.amazonaws.com" for SSH connection 2019-07-31 11:02:59 Connecting to 54.94.181.255 port 22 2019-07-31 11:02:59 We claim version: SSH-2.0-PuTTY_Release_0.72 2019-07-31 11:02:59 Remote version: SSH-2.0-OpenSSH_7.6p1 Ubuntu-4ubuntu0.3 2019-07-31 11:02:59 Using SSH protocol version 2 2019-07-31 11:02:59 No GSSAPI security context available 2019-07-31 11:02:59 Doing ECDH key exchange with curve Curve25519 and hash SHA-256 (unaccelerated) 2019-07-31 11:02:59 Server also has ecdsa-sha2-nistp256/ssh-rsa Host keys, but we don't know any of them 2019-07-31 11:02:59 Host key fingerprint is: 2019-07-31 11:02:59 ssh-ed25519 255 b1:3f:8a:d8:03:a8:da:69:ae:9c:ba:75:ea:6f:ac:2f 2019-07-31 11:02:59 Initialised AES-256 SDCTR (AES-NI accelerated) outbound encryption 2019-07-31 11:02:59 Initialised HMAC-SHA-256 (unaccelerated) outbound MAC algorithm 2019-07-31 11:02:59 Initialised AES-256 SDCTR (AES-NI accelerated) inbound encryption 2019-07-31 11:02:59 Initialised HMAC-SHA-256 (unaccelerated) inbound MAC algorithm 2019-07-31 11:02:59 Reading key file "C:\Users\claudemirsfj\Downloads\ubuntuKey.ppk" 2019-07-31 11:03:00 Pageant is running. Requesting keys. 2019-07-31 11:03:00 Pageant has 1 SSH-2 keys 2019-07-31 11:03:00 Configured key file not in Pageant 2019-07-31 11:03:00 Remote side sent disconnect message type 2 (protocol error): "Connection blocked because server only allows public key authentication. Please contact your network administrator."

SSHパケットログ：

Event Log: Looking up Host "ec2-54-94-181-255.sa-east-1.compute.amazonaws.com" for SSH connection Event Log: Connecting to 54.94.181.255 port 22 Event Log: We claim version: SSH-2.0-PuTTY_Release_0.72 Event Log: Remote version: SSH-2.0-OpenSSH_7.6p1 Ubuntu-4ubuntu0.3 Event Log: Using SSH protocol version 2 Event Log: No GSSAPI security context available Outgoing packet #0x0, type 20 / 0x14 (SSH2_MSG_KEXINIT) 00000000 4c ff b5 45 a0 b7 6b dc c8 41 68 8f 30 93 b8 1c L..E..k..Ah.0... 00000010 00 00 01 0e 63 75 72 76 65 32 35 35 31 39 2d 73 ....curve25519-s 00000020 68 61 32 35 36 40 6c 69 62 73 73 68 2e 6f 72 67 ha256@libssh.org 00000030 2c 65 63 64 68 2d 73 68 61 32 2d 6e 69 73 74 70 ,ecdh-sha2-nistp 00000040 32 35 36 2c 65 63 64 68 2d 73 68 61 32 2d 6e 69 256,ecdh-sha2-ni 00000050 73 74 70 33 38 34 2c 65 63 64 68 2d 73 68 61 32 stp384,ecdh-sha2 00000060 2d 6e 69 73 74 70 35 32 31 2c 64 69 66 66 69 65 -nistp521,diffie 00000070 2d 68 65 6c 6c 6d 61 6e 2d 67 72 6f 75 70 2d 65 -hellman-group-e 00000080 78 63 68 61 6e 67 65 2d 73 68 61 32 35 36 2c 64 xchange-sha256,d 00000090 69 66 66 69 65 2d 68 65 6c 6c 6d 61 6e 2d 67 72 iffie-hellman-gr 000000a0 6f 75 70 2d 65 78 63 68 61 6e 67 65 2d 73 68 61 oup-exchange-sha 000000b0 31 2c 64 69 66 66 69 65 2d 68 65 6c 6c 6d 61 6e 1,diffie-hellman 000000c0 2d 67 72 6f 75 70 31 34 2d 73 68 61 32 35 36 2c -group14-sha256, 000000d0 64 69 66 66 69 65 2d 68 65 6c 6c 6d 61 6e 2d 67 diffie-hellman-g 000000e0 72 6f 75 70 31 34 2d 73 68 61 31 2c 72 73 61 32 roup14-sha1,rsa2 000000f0 30 34 38 2d 73 68 61 32 35 36 2c 72 73 61 31 30 048-sha256,rsa10 00000100 32 34 2d 73 68 61 31 2c 64 69 66 66 69 65 2d 68 24-sha1,diffie-h 00000110 65 6c 6c 6d 61 6e 2d 67 72 6f 75 70 31 2d 73 68 ellman-group1-sh 00000120 61 31 00 00 00 57 73 73 68 2d 65 64 32 35 35 31 a1...Wssh-ed2551 00000130 39 2c 65 63 64 73 61 2d 73 68 61 32 2d 6e 69 73 9,ecdsa-sha2-nis 00000140 74 70 32 35 36 2c 65 63 64 73 61 2d 73 68 61 32 tp256,ecdsa-sha2 00000150 2d 6e 69 73 74 70 33 38 34 2c 65 63 64 73 61 2d -nistp384,ecdsa- 00000160 73 68 61 32 2d 6e 69 73 74 70 35 32 31 2c 73 73 sha2-nistp521,ss 00000170 68 2d 72 73 61 2c 73 73 68 2d 64 73 73 00 00 00 h-rsa,ssh-dss... 00000180 bd 61 65 73 32 35 36 2d 63 74 72 2c 61 65 73 32 .aes256-ctr,aes2 00000190 35 36 2d 63 62 63 2c 72 69 6a 6e 64 61 65 6c 2d 56-cbc,rijndael- 000001a0 63 62 63 40 6c 79 73 61 74 6f 72 2e 6c 69 75 2e cbc@lysator.liu. 000001b0 73 65 2c 61 65 73 31 39 32 2d 63 74 72 2c 61 65 se,aes192-ctr,ae 000001c0 73 31 39 32 2d 63 62 63 2c 61 65 73 31 32 38 2d s192-cbc,aes128- 000001d0 63 74 72 2c 61 65 73 31 32 38 2d 63 62 63 2c 63 ctr,aes128-cbc,c 000001e0 68 61 63 68 61 32 30 2d 70 6f 6c 79 31 33 30 35 hacha20-poly1305 000001f0 40 6f 70 65 6e 73 73 68 2e 63 6f 6d 2c 33 64 65 @openssh.com,3de 00000200 73 2d 63 74 72 2c 33 64 65 73 2d 63 62 63 2c 62 s-ctr,3des-cbc,b 00000210 6c 6f 77 66 69 73 68 2d 63 74 72 2c 62 6c 6f 77 lowfish-ctr,blow 00000220 66 69 73 68 2d 63 62 63 2c 61 72 63 66 6f 75 72 fish-cbc,arcfour 00000230 32 35 36 2c 61 72 63 66 6f 75 72 31 32 38 00 00 256,arcfour128.. 00000240 00 bd 61 65 73 32 35 36 2d 63 74 72 2c 61 65 73 ..aes256-ctr,aes 00000250 32 35 36 2d 63 62 63 2c 72 69 6a 6e 64 61 65 6c 256-cbc,rijndael 00000260 2d 63 62 63 40 6c 79 73 61 74 6f 72 2e 6c 69 75 -cbc@lysator.liu 00000270 2e 73 65 2c 61 65 73 31 39 32 2d 63 74 72 2c 61 .se,aes192-ctr,a 00000280 65 73 31 39 32 2d 63 62 63 2c 61 65 73 31 32 38 es192-cbc,aes128 00000290 2d 63 74 72 2c 61 65 73 31 32 38 2d 63 62 63 2c -ctr,aes128-cbc, 000002a0 63 68 61 63 68 61 32 30 2d 70 6f 6c 79 31 33 30 chacha20-poly130 000002b0 35 40 6f 70 65 6e 73 73 68 2e 63 6f 6d 2c 33 64 5@openssh.com,3d 000002c0 65 73 2d 63 74 72 2c 33 64 65 73 2d 63 62 63 2c es-ctr,3des-cbc, 000002d0 62 6c 6f 77 66 69 73 68 2d 63 74 72 2c 62 6c 6f blowfish-ctr,blo 000002e0 77 66 69 73 68 2d 63 62 63 2c 61 72 63 66 6f 75 wfish-cbc,arcfou 000002f0 72 32 35 36 2c 61 72 63 66 6f 75 72 31 32 38 00 r256,arcfour128. 00000300 00 00 9b 68 6d 61 63 2d 73 68 61 32 2d 32 35 36 ...hmac-sha2-256 00000310 2c 68 6d 61 63 2d 73 68 61 31 2c 68 6d 61 63 2d ,hmac-sha1,hmac- 00000320 73 68 61 31 2d 39 36 2c 68 6d 61 63 2d 6d 64 35 sha1-96,hmac-md5 00000330 2c 68 6d 61 63 2d 73 68 61 32 2d 32 35 36 2d 65 ,hmac-sha2-256-e 00000340 74 6d 40 6f 70 65 6e 73 73 68 2e 63 6f 6d 2c 68 tm@openssh.com,h 00000350 6d 61 63 2d 73 68 61 31 2d 65 74 6d 40 6f 70 65 mac-sha1-etm@ope 00000360 6e 73 73 68 2e 63 6f 6d 2c 68 6d 61 63 2d 73 68 nssh.com,hmac-sh 00000370 61 31 2d 39 36 2d 65 74 6d 40 6f 70 65 6e 73 73 a1-96-etm@openss 00000380 68 2e 63 6f 6d 2c 68 6d 61 63 2d 6d 64 35 2d 65 h.com,hmac-md5-e 00000390 74 6d 40 6f 70 65 6e 73 73 68 2e 63 6f 6d 00 00 tm@openssh.com.. 000003a0 00 9b 68 6d 61 63 2d 73 68 61 32 2d 32 35 36 2c ..hmac-sha2-256, 000003b0 68 6d 61 63 2d 73 68 61 31 2c 68 6d 61 63 2d 73 hmac-sha1,hmac-s 000003c0 68 61 31 2d 39 36 2c 68 6d 61 63 2d 6d 64 35 2c ha1-96,hmac-md5, 000003d0 68 6d 61 63 2d 73 68 61 32 2d 32 35 36 2d 65 74 hmac-sha2-256-et 000003e0 6d 40 6f 70 65 6e 73 73 68 2e 63 6f 6d 2c 68 6d m@openssh.com,hm 000003f0 61 63 2d 73 68 61 31 2d 65 74 6d 40 6f 70 65 6e ac-sha1-etm@open 00000400 73 73 68 2e 63 6f 6d 2c 68 6d 61 63 2d 73 68 61 ssh.com,hmac-sha 00000410 31 2d 39 36 2d 65 74 6d 40 6f 70 65 6e 73 73 68 1-96-etm@openssh 00000420 2e 63 6f 6d 2c 68 6d 61 63 2d 6d 64 35 2d 65 74 .com,hmac-md5-et 00000430 6d 40 6f 70 65 6e 73 73 68 2e 63 6f 6d 00 00 00 m@openssh.com... 00000440 1a 6e 6f 6e 65 2c 7a 6c 69 62 2c 7a 6c 69 62 40 .none,zlib,zlib@ 00000450 6f 70 65 6e 73 73 68 2e 63 6f 6d 00 00 00 1a 6e openssh.com....n 00000460 6f 6e 65 2c 7a 6c 69 62 2c 7a 6c 69 62 40 6f 70 one,zlib,zlib@op 00000470 65 6e 73 73 68 2e 63 6f 6d 00 00 00 00 00 00 00 enssh.com....... 00000480 00 00 00 00 00 00 ...... Incoming packet #0x0, type 20 / 0x14 (SSH2_MSG_KEXINIT) 00000000 4c ff 57 db 28 c7 a2 88 41 4d 12 04 be 5f 72 28 L.W.(...AM..._r( 00000010 00 00 01 02 63 75 72 76 65 32 35 35 31 39 2d 73 ....curve25519-s 00000020 68 61 32 35 36 2c 63 75 72 76 65 32 35 35 31 39 ha256,curve25519 00000030 2d 73 68 61 32 35 36 40 6c 69 62 73 73 68 2e 6f -sha256@libssh.o 00000040 72 67 2c 65 63 64 68 2d 73 68 61 32 2d 6e 69 73 rg,ecdh-sha2-nis 00000050 74 70 32 35 36 2c 65 63 64 68 2d 73 68 61 32 2d tp256,ecdh-sha2- 00000060 6e 69 73 74 70 33 38 34 2c 65 63 64 68 2d 73 68 nistp384,ecdh-sh 00000070 61 32 2d 6e 69 73 74 70 35 32 31 2c 64 69 66 66 a2-nistp521,diff 00000080 69 65 2d 68 65 6c 6c 6d 61 6e 2d 67 72 6f 75 70 ie-hellman-group 00000090 2d 65 78 63 68 61 6e 67 65 2d 73 68 61 32 35 36 -exchange-sha256 000000a0 2c 64 69 66 66 69 65 2d 68 65 6c 6c 6d 61 6e 2d ,diffie-hellman- 000000b0 67 72 6f 75 70 31 36 2d 73 68 61 35 31 32 2c 64 group16-sha512,d 000000c0 69 66 66 69 65 2d 68 65 6c 6c 6d 61 6e 2d 67 72 iffie-hellman-gr 000000d0 6f 75 70 31 38 2d 73 68 61 35 31 32 2c 64 69 66 oup18-sha512,dif 000000e0 66 69 65 2d 68 65 6c 6c 6d 61 6e 2d 67 72 6f 75 fie-hellman-grou 000000f0 70 31 34 2d 73 68 61 32 35 36 2c 64 69 66 66 69 p14-sha256,diffi 00000100 65 2d 68 65 6c 6c 6d 61 6e 2d 67 72 6f 75 70 31 e-hellman-group1 00000110 34 2d 73 68 61 31 00 00 00 41 73 73 68 2d 72 73 4-sha1...Assh-rs 00000120 61 2c 72 73 61 2d 73 68 61 32 2d 35 31 32 2c 72 a,rsa-sha2-512,r 00000130 73 61 2d 73 68 61 32 2d 32 35 36 2c 65 63 64 73 sa-sha2-256,ecds 00000140 61 2d 73 68 61 32 2d 6e 69 73 74 70 32 35 36 2c a-sha2-nistp256, 00000150 73 73 68 2d 65 64 32 35 35 31 39 00 00 00 6c 63 ssh-ed25519...lc 00000160 68 61 63 68 61 32 30 2d 70 6f 6c 79 31 33 30 35 hacha20-poly1305 00000170 40 6f 70 65 6e 73 73 68 2e 63 6f 6d 2c 61 65 73 @openssh.com,aes 00000180 31 32 38 2d 63 74 72 2c 61 65 73 31 39 32 2d 63 128-ctr,aes192-c 00000190 74 72 2c 61 65 73 32 35 36 2d 63 74 72 2c 61 65 tr,aes256-ctr,ae 000001a0 73 31 32 38 2d 67 63 6d 40 6f 70 65 6e 73 73 68 s128-gcm@openssh 000001b0 2e 63 6f 6d 2c 61 65 73 32 35 36 2d 67 63 6d 40 .com,aes256-gcm@ 000001c0 6f 70 65 6e 73 73 68 2e 63 6f 6d 00 00 00 6c 63 openssh.com...lc 000001d0 68 61 63 68 61 32 30 2d 70 6f 6c 79 31 33 30 35 hacha20-poly1305 000001e0 40 6f 70 65 6e 73 73 68 2e 63 6f 6d 2c 61 65 73 @openssh.com,aes 000001f0 31 32 38 2d 63 74 72 2c 61 65 73 31 39 32 2d 63 128-ctr,aes192-c 00000200 74 72 2c 61 65 73 32 35 36 2d 63 74 72 2c 61 65 tr,aes256-ctr,ae 00000210 73 31 32 38 2d 67 63 6d 40 6f 70 65 6e 73 73 68 s128-gcm@openssh 00000220 2e 63 6f 6d 2c 61 65 73 32 35 36 2d 67 63 6d 40 .com,aes256-gcm@ 00000230 6f 70 65 6e 73 73 68 2e 63 6f 6d 00 00 00 d5 75 openssh.com....u 00000240 6d 61 63 2d 36 34 2d 65 74 6d 40 6f 70 65 6e 73 mac-64-etm@opens 00000250 73 68 2e 63 6f 6d 2c 75 6d 61 63 2d 31 32 38 2d sh.com,umac-128- 00000260 65 74 6d 40 6f 70 65 6e 73 73 68 2e 63 6f 6d 2c etm@openssh.com, 00000270 68 6d 61 63 2d 73 68 61 32 2d 32 35 36 2d 65 74 hmac-sha2-256-et 00000280 6d 40 6f 70 65 6e 73 73 68 2e 63 6f 6d 2c 68 6d m@openssh.com,hm 00000290 61 63 2d 73 68 61 32 2d 35 31 32 2d 65 74 6d 40 ac-sha2-512-etm@ 000002a0 6f 70 65 6e 73 73 68 2e 63 6f 6d 2c 68 6d 61 63 openssh.com,hmac 000002b0 2d 73 68 61 31 2d 65 74 6d 40 6f 70 65 6e 73 73 -sha1-etm@openss 000002c0 68 2e 63 6f 6d 2c 75 6d 61 63 2d 36 34 40 6f 70 h.com,umac-64@op 000002d0 65 6e 73 73 68 2e 63 6f 6d 2c 75 6d 61 63 2d 31 enssh.com,umac-1 000002e0 32 38 40 6f 70 65 6e 73 73 68 2e 63 6f 6d 2c 68 28@openssh.com,h 000002f0 6d 61 63 2d 73 68 61 32 2d 32 35 36 2c 68 6d 61 mac-sha2-256,hma 00000300 63 2d 73 68 61 32 2d 35 31 32 2c 68 6d 61 63 2d c-sha2-512,hmac- 00000310 73 68 61 31 00 00 00 d5 75 6d 61 63 2d 36 34 2d sha1....umac-64- 00000320 65 74 6d 40 6f 70 65 6e 73 73 68 2e 63 6f 6d 2c etm@openssh.com, 00000330 75 6d 61 63 2d 31 32 38 2d 65 74 6d 40 6f 70 65 umac-128-etm@ope 00000340 6e 73 73 68 2e 63 6f 6d 2c 68 6d 61 63 2d 73 68 nssh.com,hmac-sh 00000350 61 32 2d 32 35 36 2d 65 74 6d 40 6f 70 65 6e 73 a2-256-etm@opens 00000360 73 68 2e 63 6f 6d 2c 68 6d 61 63 2d 73 68 61 32 sh.com,hmac-sha2 00000370 2d 35 31 32 2d 65 74 6d 40 6f 70 65 6e 73 73 68 -512-etm@openssh 00000380 2e 63 6f 6d 2c 68 6d 61 63 2d 73 68 61 31 2d 65 .com,hmac-sha1-e 00000390 74 6d 40 6f 70 65 6e 73 73 68 2e 63 6f 6d 2c 75 tm@openssh.com,u 000003a0 6d 61 63 2d 36 34 40 6f 70 65 6e 73 73 68 2e 63 mac-64@openssh.c 000003b0 6f 6d 2c 75 6d 61 63 2d 31 32 38 40 6f 70 65 6e om,umac-128@open 000003c0 73 73 68 2e 63 6f 6d 2c 68 6d 61 63 2d 73 68 61 ssh.com,hmac-sha 000003d0 32 2d 32 35 36 2c 68 6d 61 63 2d 73 68 61 32 2d 2-256,hmac-sha2- 000003e0 35 31 32 2c 68 6d 61 63 2d 73 68 61 31 00 00 00 512,hmac-sha1... 000003f0 15 6e 6f 6e 65 2c 7a 6c 69 62 40 6f 70 65 6e 73 .none,zlib@opens 00000400 73 68 2e 63 6f 6d 00 00 00 15 6e 6f 6e 65 2c 7a sh.com....none,z 00000410 6c 69 62 40 6f 70 65 6e 73 73 68 2e 63 6f 6d 00 lib@openssh.com. 00000420 00 00 00 00 00 00 00 00 00 00 00 00 ............ Event Log: Doing ECDH key exchange with curve Curve25519 and hash SHA-256 (unaccelerated) Outgoing packet #0x1, type 30 / 0x1e (SSH2_MSG_KEX_ECDH_INIT) 00000000 00 00 00 20 78 d4 6f ef ea 7f c3 62 60 08 00 ad ... x.o....b`... 00000010 91 a2 73 d7 37 dd 58 a3 3b fe fd 1b 08 2b bc ba ..s.7.X.;....+.. 00000020 65 6b 98 22 ek." Incoming packet #0x1, type 31 / 0x1f (SSH2_MSG_KEX_ECDH_REPLY) 00000000 00 00 00 33 00 00 00 0b 73 73 68 2d 65 64 32 35 ...3....ssh-ed25 00000010 35 31 39 00 00 00 20 f5 2c e5 ef d9 23 c4 b9 5f 519... .,...#.._ 00000020 d5 76 1f 9f 79 4c e3 37 e8 d1 1a 35 89 49 82 54 .v..yL.7...5.I.T 00000030 b2 3e 1d b3 02 6d 3f 00 00 00 20 ce b1 50 38 0c .>...m?... ..P8. 00000040 ea bb 7b 4e 58 55 d4 6a 92 2c a3 c2 85 b5 a9 d5 ..{NXU.j.,...... 00000050 77 fc 73 6a 80 26 95 4c 33 07 5f 00 00 00 53 00 w.sj.&.L3._...S. 00000060 00 00 0b 73 73 68 2d 65 64 32 35 35 31 39 00 00 ...ssh-ed25519.. 00000070 00 40 0c c4 7a 03 36 1f 97 6c 3c c8 4c 15 4e 41 .@..z.6..l<.L.NA 00000080 39 e2 8b 51 e7 0f ba 93 af d0 43 73 2a 13 54 90 9..Q......Cs*.T. 00000090 b1 d4 4d 19 78 c0 a1 8d 34 bc 71 16 fa 14 23 3a ..M.x...4.q...#: 000000a0 11 e3 f6 25 60 6e 8e d9 c0 fc e0 56 4f 8a 57 4c ...%`n.....VO.WL 000000b0 0f 0f .. Incoming packet #0x2, type 21 / 0x15 (SSH2_MSG_NEWKEYS) Event Log: Server also has ecdsa-sha2-nistp256/ssh-rsa Host keys, but we don't know any of them Event Log: Host key fingerprint is: Event Log: ssh-ed25519 255 b1:3f:8a:d8:03:a8:da:69:ae:9c:ba:75:ea:6f:ac:2f Outgoing packet #0x2, type 21 / 0x15 (SSH2_MSG_NEWKEYS) Event Log: Initialised AES-256 SDCTR (AES-NI accelerated) outbound encryption Event Log: Initialised HMAC-SHA-256 (unaccelerated) outbound MAC algorithm Event Log: Initialised AES-256 SDCTR (AES-NI accelerated) inbound encryption Event Log: Initialised HMAC-SHA-256 (unaccelerated) inbound MAC algorithm Outgoing packet #0x3, type 5 / 0x05 (SSH2_MSG_SERVICE_REQUEST) 00000000 00 00 00 0c 73 73 68 2d 75 73 65 72 61 75 74 68 ....ssh-userauth Incoming packet #0x3, type 6 / 0x06 (SSH2_MSG_SERVICE_ACCEPT) 00000000 00 00 00 0c 73 73 68 2d 75 73 65 72 61 75 74 68 ....ssh-userauth Event Log: Reading key file "C:\Users\claudemirsfj\Downloads\ubuntuKey.ppk" Event Log: Pageant is running. Requesting keys. Event Log: Pageant has 1 SSH-2 keys Event Log: Configured key file not in Pageant Outgoing packet #0x4, type 50 / 0x32 (SSH2_MSG_USERAUTH_REQUEST) 00000000 00 00 00 06 75 62 75 6e 74 75 00 00 00 0e 73 73 ....ubuntu....ss 00000010 68 2d 63 6f 6e 6e 65 63 74 69 6f 6e 00 00 00 04 h-connection.... 00000020 6e 6f 6e 65 none Incoming packet #0x4, type 1 / 0x01 (SSH2_MSG_DISCONNECT) 00000000 00 00 00 02 00 00 00 73 43 6f 6e 6e 65 63 74 69 .......sConnecti 00000010 6f 6e 20 62 6c 6f 63 6b 65 64 20 62 65 63 61 75 on blocked becau 00000020 73 65 20 73 65 72 76 65 72 20 6f 6e 6c 79 20 61 se server only a 00000030 6c 6c 6f 77 73 20 70 75 62 6c 69 63 20 6b 65 79 llows public key 00000040 20 61 75 74 68 65 6e 74 69 63 61 74 69 6f 6e 2e authentication. 00000050 20 50 6c 65 61 73 65 20 63 6f 6e 74 61 63 74 20 Please contact 00000060 79 6f 75 72 20 6e 65 74 77 6f 72 6b 20 61 64 6d your network adm 00000070 69 6e 69 73 74 72 61 74 6f 72 2e 00 00 00 00 inistrator..... Event Log: Remote side sent disconnect message type 2 (protocol error): "Connection blocked because server only allows public key authentication. Please contact your network administrator."

私がすでに試したこと：

セキュリティグループは世界中に公開されています（すべてのトラフィック）。
ユーザー名は正しいです。
キーが.pemから.ppkに変換されました
変換されたキーは、SSH> Authで設定されました。
私は制限なしでオープンネットワークにいます。
.pem元のファイルを使用するために、mobaxtermも（GUIおよびコマンドラインを介して）使用しようとしました-同じエラー。

別のSSHツールを試した後、EC2構成の詳細になる可能性があると思います...

私はプロジェクトをホストするためにこれにこだわっています。誰かが私を解決策に導くことができますか？

ありがとう！

Martin Prikryl · Accepted Answer

エラーメッセージをグーグルで検索すると、最初の2つの関連ヒットはどちらも、問題はファイアウォールのSSHインスペクションが原因であると主張しています。

bitbucketクラウドでは公開キーを使用できません community.atlassian.com

わかりました。ボーダーゲートウェイでssl/ssh検査を行っていますが、問題が発生したようです。 sshインスペクションを無効にするか、またはbitbucketのIPの例外を追加して、bitbucketリポジトリからプッシュおよびプルできるようになりました。
すべてのインスタンスで壊れたキーベースの認証-新しいEC2インスタンスと新しいキーペアでも reddit.com：

Sshトラフィックと干渉する非常に積極的なMITMファイアウォール/ルーターが配備されていますか？

詳細な検査で私は落ち込んだ。 ...ファイアウォールは確かにMITMでした。

これは動作を説明します。サーバーが「OpenSSH」であると主張している（そして実際のサーバーはおそらくOpenSSHである）一方で、OpenSSHにはのようなエラーメッセージはありません。ネットワーク管理者」。エラーメッセージを挿入するのは、実際のOpenSSHサーバーに代わって動作する中間サーバー/デバイスである必要があります。