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Ich habe Probleme beim Herstellen der Verbindung zu Instanzen, die ich mit SSH erstellt habe. Ich kann diese Instanzen nicht einmal pingen (mit ICMP aktiviert).AWS EC2-Instanz: SSH-Verbindung wird nach konsistentem Timeout dauerhaft gelöscht
Wenn ich die Instanz stoppe und neu starte, kann ich für etwa 60 Sekunden eine Verbindung mit SSH herstellen, dann bekomme ich den Fehler: "connection reset by".
Ich habe geeignete SSH-Konfigurationen, die vor einer Woche für mich arbeiteten. In einer Instanz habe ich den gesamten Datenverkehr von überall zugelassen. Kann immer noch nicht pingen. Ich bekomme eine Zeitüberschreitung bei Port 22 Connection. Ich versuchte verschiedene Internet-Verbindungen, Host-Computer. Ich bekomme dieselben Fehler für Amazon/Ubuntu AMIs.
Finden Sie Protokoll am unteren Rand zum Beispiel. Im angehängten Protokoll habe ich die ssh-Konfigurationsdatei angeschaut, aber nichts geändert. Ich habe versucht, einige Debugging-Informationen zu bekommen. Ich habe einige andere Dinge an 2-3 anderen Instanzen versucht, darunter einige Konfiguration in der SSHD-Konfigurationsdatei, nichts hat funktioniert. Vielen Dank!
Konnektivitätsfehler Beispiele: A.
$ ssh -i "ec2_key2.pem" [email protected]
ssh: connect to host ec2-52-90-56-88.compute-1.amazonaws.com port 22: Connection timed out
B.
[email protected]:~/AWS$ ssh -Xvvv -i "ec2_key2.pem" [email protected]
OpenSSH_6.6.1, OpenSSL 1.0.1f 6 Jan 2014
debug1: Reading configuration data /etc/ssh/ssh_config
debug1: /etc/ssh/ssh_config line 19: Applying options for *
debug2: ssh_connect: needpriv 0
debug1: Connecting to ec2-54-147-245-230.compute-1.amazonaws.com [54.147.245.230] port 22.
debug1: connect to address 54.147.245.230 port 22: Connection refused
ssh: connect to host ec2-54-147-245-230.compute-1.amazonaws.com port 22: Connection refused
LOG Befestigt: LOG auf Amazon AMI-Instanz. Die Verbindung wird nach ungefähr 60 Sekunden zurückgesetzt. Ich kann die Instanz stoppen, neu starten und für etwa eine Minute verbinden.
$ ssh -vvv -i "standard_aws_ec2.pem" [email protected]
OpenSSH_7.5p1, OpenSSL 1.0.2l 25 May 2017
debug1: Reading configuration data /etc/ssh/ssh_config
debug2: resolving "ec2-54-159-105-2.compute-1.amazonaws.com" port 22
debug2: ssh_connect_direct: needpriv 0
debug1: Connecting to ec2-54-159-105-2.compute-1.amazonaws.com [54.159.105.2] port 22.
debug1: Connection established.
debug1: key_load_public: No such file or directory
debug1: identity file standard_aws_ec2.pem type -1
debug1: key_load_public: No such file or directory
debug1: identity file standard_aws_ec2.pem-cert type -1
debug1: Enabling compatibility mode for protocol 2.0
debug1: Local version string SSH-2.0-OpenSSH_7.5
debug1: Remote protocol version 2.0, remote software version OpenSSH_7.4
debug1: match: OpenSSH_7.4 pat OpenSSH* compat 0x04000000
debug2: fd 3 setting O_NONBLOCK
debug1: Authenticating to ec2-54-159-105-2.compute-1.amazonaws.com:22 as 'ec2-user'
debug3: hostkeys_foreach: reading file "/c/Users/chinm/.ssh/known_hosts"
debug3: send packet: type 20
debug1: SSH2_MSG_KEXINIT sent
debug3: receive packet: type 20
debug1: SSH2_MSG_KEXINIT received
debug2: local client KEXINIT proposal
debug2: KEX algorithms: curve25519-sha256,[email protected],ecdh-sha2-nistp256,ecdh-sha2-nistp384,ecdh-sha2-nistp521,diffie-hellman-group-exchange-sha256,diffie-hellman-group16-sha512,diffie-hellman-group18-sha512,diffie-hellman-group-exchange-sha1,diffie-hellman-group14-sha256,diffie-hellman-group14-sha1,ext-info-c
debug2: host key algorithms: [email protected],[email protected],[email protected],[email protected],[email protected],ecdsa-sha2-nistp256,ecdsa-sha2-nistp384,ecdsa-sha2-nistp521,ssh-ed25519,rsa-sha2-512,rsa-sha2-256,ssh-rsa
debug2: ciphers ctos: [email protected],aes128-ctr,aes192-ctr,aes256-ctr,[email protected],[email protected],aes128-cbc,aes192-cbc,aes256-cbc
debug2: ciphers stoc: [email protected],aes128-ctr,aes192-ctr,aes256-ctr,[email protected],[email protected],aes128-cbc,aes192-cbc,aes256-cbc
debug2: MACs ctos: [email protected],[email protected],[email protected],[email protected],[email protected],[email protected],[email protected],hmac-sha2-256,hmac-sha2-512,hmac-sha1
debug2: MACs stoc: [email protected],[email protected],[email protected],[email protected],[email protected],[email protected],[email protected],hmac-sha2-256,hmac-sha2-512,hmac-sha1
debug2: compression ctos: none,[email protected],zlib
debug2: compression stoc: none,[email protected],zlib
debug2: languages ctos:
debug2: languages stoc:
debug2: first_kex_follows 0
debug2: reserved 0
debug2: peer server KEXINIT proposal
debug2: KEX algorithms: curve25519-sha256,[email protected],ecdh-sha2-nistp256,ecdh-sha2-nistp384,ecdh-sha2-nistp521,diffie-hellman-group-exchange-sha256,diffie-hellman-group16-sha512,diffie-hellman-group18-sha512,diffie-hellman-group-exchange-sha1,diffie-hellman-group14-sha256,diffie-hellman-group14-sha1,diffie-hellman-group1-sha1
debug2: host key algorithms: ssh-rsa,rsa-sha2-512,rsa-sha2-256,ecdsa-sha2-nistp256,ssh-ed25519
debug2: ciphers ctos: [email protected],aes128-ctr,aes192-ctr,aes256-ctr,[email protected],[email protected],aes128-cbc,aes192-cbc,aes256-cbc,blowfish-cbc,cast128-cbc,3des-cbc
debug2: ciphers stoc: [email protected],aes128-ctr,aes192-ctr,aes256-ctr,[email protected],[email protected],aes128-cbc,aes192-cbc,aes256-cbc,blowfish-cbc,cast128-cbc,3des-cbc
debug2: MACs ctos: [email protected],[email protected],[email protected],[email protected],[email protected],[email protected],[email protected],hmac-sha2-256,hmac-sha2-512,hmac-sha1
debug2: MACs stoc: [email protected],[email protected],[email protected],[email protected],[email protected],[email protected],[email protected],hmac-sha2-256,hmac-sha2-512,hmac-sha1
debug2: compression ctos: none,[email protected]
debug2: compression stoc: none,[email protected]
debug2: languages ctos:
debug2: languages stoc:
debug2: first_kex_follows 0
debug2: reserved 0
debug1: kex: algorithm: curve25519-sha256
debug1: kex: host key algorithm: ecdsa-sha2-nistp256
debug1: kex: server->client cipher: [email protected] MAC: <implicit> compression: none
debug1: kex: client->server cipher: [email protected] MAC: <implicit> compression: none
debug3: send packet: type 30
debug1: expecting SSH2_MSG_KEX_ECDH_REPLY
debug3: receive packet: type 31
debug1: Server host key: ecdsa-sha2-nistp256 SHA256:ni9r3f3A8dvyLH655cub1AVvuCKywoTQ3Hyz7ZALZiw
debug3: hostkeys_foreach: reading file "/c/Users/chinm/.ssh/known_hosts"
debug3: hostkeys_foreach: reading file "/c/Users/chinm/.ssh/known_hosts"
The authenticity of host 'ec2-54-159-105-2.compute-1.amazonaws.com (54.159.105.2)' can't be established.
ECDSA key fingerprint is SHA256:ni9r3f3A8dvyLH655cub1AVvuCKywoTQ3Hyz7ZALZiw.
Are you sure you want to continue connecting (yes/no)? yes
Warning: Permanently added 'ec2-54-159-105-2.compute-1.amazonaws.com,54.159.105.2' (ECDSA) to the list of known hosts.
debug3: send packet: type 21
debug2: set_newkeys: mode 1
debug1: rekey after 134217728 blocks
debug1: SSH2_MSG_NEWKEYS sent
debug1: expecting SSH2_MSG_NEWKEYS
debug3: receive packet: type 21
debug1: SSH2_MSG_NEWKEYS received
debug2: set_newkeys: mode 0
debug1: rekey after 134217728 blocks
debug2: key: standard_aws_ec2.pem (0x0), explicit
debug3: send packet: type 5
debug3: receive packet: type 7
debug1: SSH2_MSG_EXT_INFO received
debug1: kex_input_ext_info: server-sig-algs=<rsa-sha2-256,rsa-sha2-512>
debug3: receive packet: type 6
debug2: service_accept: ssh-userauth
debug1: SSH2_MSG_SERVICE_ACCEPT received
debug3: send packet: type 50
debug3: receive packet: type 51
debug1: Authentications that can continue: publickey
debug3: start over, passed a different list publickey
debug3: preferred publickey,keyboard-interactive,password
debug3: authmethod_lookup publickey
debug3: remaining preferred: keyboard-interactive,password
debug3: authmethod_is_enabled publickey
debug1: Next authentication method: publickey
debug1: Trying private key: standard_aws_ec2.pem
debug3: sign_and_send_pubkey: RSA SHA256:myqjI3CrEdes0mQO+Gq9osyyAyO0ONBEjCLYuHAJM10
debug3: send packet: type 50
debug2: we sent a publickey packet, wait for reply
debug3: receive packet: type 52
debug1: Authentication succeeded (publickey).
Authenticated to ec2-54-159-105-2.compute-1.amazonaws.com ([54.159.105.2]:22).
debug1: channel 0: new [client-session]
debug3: ssh_session2_open: channel_new: 0
debug2: channel 0: send open
debug3: send packet: type 90
debug1: Requesting [email protected]
debug3: send packet: type 80
debug1: Entering interactive session.
debug1: pledge: network
debug3: receive packet: type 80
debug1: client_input_global_request: rtype [email protected] want_reply 0
debug3: receive packet: type 91
debug2: callback start
debug2: fd 3 setting TCP_NODELAY
debug3: ssh_packet_set_tos: set IP_TOS 0x10
debug2: client_session2_setup: id 0
debug2: channel 0: request pty-req confirm 1
debug3: send packet: type 98
debug2: channel 0: request shell confirm 1
debug3: send packet: type 98
debug2: callback done
debug2: channel 0: open confirm rwindow 0 rmax 32768
debug3: receive packet: type 99
debug2: channel_input_status_confirm: type 99 id 0
debug2: PTY allocation request accepted on channel 0
debug2: channel 0: rcvd adjust 2097152
debug3: receive packet: type 99
debug2: channel_input_status_confirm: type 99 id 0
debug2: shell request accepted on channel 0
Last login: Sun Nov 26 02:10:49 2017 from 198.21.199.65
__| __|_ )
_| ( / Amazon Linux AMI
___|\___|___|
https://aws.amazon.com/amazon-linux-ami/2017.09-release-notes/
4 package(s) needed for security, out of 20 available
Run "sudo yum update" to apply all updates.
[[email protected] ~]$ ssh -i "standard_aws_ec2.pem" [email protected]^C
[[email protected] ~]$ sudo sudo ufw allow 22
sudo: ufw: command not found
[[email protected] ~]$ sudo ufw allow 22
sudo: ufw: command not found
[[email protected] ~]$ yum install ufw
Loaded plugins: priorities, update-motd, upgrade-helper
You need to be root to perform this command.
[[email protected] ~]$ sudo yum install ufw
Loaded plugins: priorities, update-motd, upgrade-helper
No package ufw available.
Error: Nothing to do
[[email protected] ~]$ sudo vim
[[email protected] ~]$ sudo vim /etc/ss
ssh/ ssl/
[[email protected] ~]$ sudo vim /etc/ss
ssh/ ssl/
[[email protected] ~]$ sudo vim /etc/ssh/
moduli ssh_host_dsa_key.pub ssh_host_ed25519_key.pub
ssh_config ssh_host_ecdsa_key ssh_host_rsa_key
sshd_config ssh_host_ecdsa_key.pub ssh_host_rsa_key.pub
ssh_host_dsa_key ssh_host_ed25519_key
[[email protected] ~]$ sudo vim /etc/ssh/
moduli ssh_host_dsa_key.pub ssh_host_ed25519_key.pub
ssh_config ssh_host_ecdsa_key ssh_host_rsa_key
sshd_config ssh_host_ecdsa_key.pub ssh_host_rsa_key.pub
ssh_host_dsa_key ssh_host_ed25519_key
[[email protected] ~]$ sudo vim /etc/ssh/ssh
ssh_config ssh_host_ecdsa_key ssh_host_rsa_key
sshd_config ssh_host_ecdsa_key.pub ssh_host_rsa_key.pub
ssh_host_dsa_key ssh_host_ed25519_key
ssh_host_dsa_key.pub ssh_host_ed25519_key.pub
[[email protected] ~]$ sudo vim /etc/ssh/ssh
ssh_config ssh_host_ecdsa_key ssh_host_rsa_key
sshd_config ssh_host_ecdsa_key.pub ssh_host_rsa_key.pub
ssh_host_dsa_key ssh_host_ed25519_key
ssh_host_dsa_key.pub ssh_host_ed25519_key.pub
[[email protected] ~]$ sudo vim /etc/ssh/ssh
ssh_config ssh_host_ecdsa_key ssh_host_rsa_key
sshd_config ssh_host_ecdsa_key.pub ssh_host_rsa_key.pub
ssh_host_dsa_key ssh_host_ed25519_key
ssh_host_dsa_key.pub ssh_host_ed25519_key.pub
[[email protected] ~]$ sudo vim /etc/ssh/sshd_config
[[email protected] ~]$ sudo netstat -anp | grep sshd
tcp 0 0 0.0.0.0:22 0.0.0.0:* LISTEN 2474/sshd
tcp 0 36 172.31.93.53:22 198.21.199.65:52145 ESTABLISHED 2595/sshd
tcp 0 0 :::22 :::* LISTEN 2474/sshd
unix 2 [ ] DGRAM 11314 2595/sshd
unix 3 [ ] STREAM CONNECTED 11318 2595/sshd
unix 3 [ ] STREAM CONNECTED 11317 2597/sshd
[[email protected] ~]$ debug3: send packet: type 1
Connection reset by 54.159.105.2 port 22