-1
SSH로 만든 인스턴스에 연결하는 데 문제가 있습니다. 필자는 ICMP를 사용하여 이러한 인스턴스를 Ping 할 수도 없습니다.AWS EC2 인스턴스 : 일관된 시간 초과 후 SSH 연결이 영구적으로 끊깁니다.
인스턴스를 중지하고 다시 시작하면 약 60 초 동안 SSH에 연결할 수 있습니다. 그러면 "connection reset by"오류가 발생합니다.
필자는 일주일 전에 저에게 적합한 SSH 구성을 가지고 있습니다. 한 예로, 어디에서나 모든 트래픽을 허용했습니다. 아직도 ping을 할 수 없습니다. 포트 22 연결 시간이 초과되었습니다. 다른 인터넷 연결, 호스트 컴퓨터를 사용해 보았습니다. Amazon/Ubuntu AMI에 대해 동일한 오류가 발생합니다.
예를 들어 하단에 로그를 찾으십시오. 첨부 된 로그에서 ssh config 파일을 살펴 보았지만 아무 것도 변경하지 않았습니다. 일부 디버깅 정보를 얻으려고했습니다. SSHD 구성 파일의 일부 구성을 포함하여 2-3 개의 다른 인스턴스에서 다른 작업을 시도했지만 아무 것도 작동하지 않았습니다. 감사합니다.
연결 오류 예 : 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
LOG은 첨부 : LOG 아마존 AMI 인스턴스. 약 60 초 후에 연결이 재설정됩니다. 인스턴스를 중지했다가 다시 시작한 후 약 1 분간 연결할 수 있습니다.
$ 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],umac-128-[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