当我尝试将文件从 MAC OS (11.2.3) 远程传输到 Ubuntu 18.04.05 时，我遇到了连接超时的问题。我能够连接并通过ssh.以下是使用三种不同的文件传输方法的示例，所有这些似乎都会给出类似的错误，这让我认为这与我的本地配置或防火墙有关，但我不知道如何解决此问题。
请注意，我已用假填充符替换了我的用户名和 IP，但运行脚本时我使用的是真实姓名。
SSH
这很好用，但放在这里以防万一它有帮助。
ssh -p 9922 [remote-user]@[remote-IP]
SCP
运行以下代码：
scp -vvvP 9922 /Users/[local-user]/Desktop/moving-files-ssh.txt [remote-user]@[remote-IP]:~/
导致连接超时，不请求密码或其他任何内容：
Executing: program /usr/bin/ssh host [remote-IP], user [remote-user], command scp -v -t ~/
OpenSSH_8.1p1, LibreSSL 2.7.3
debug1: Reading configuration data /etc/ssh/ssh_config
debug1: /etc/ssh/ssh_config line 47: Applying options for *
debug2: resolve_canonicalize: hostname [remote-IP] is address
debug2: ssh_connect_direct
debug1: Connecting to [remote-IP] [[remote-IP]] port 9922.
debug1: connect to address [remote-IP] port 9922: Operation timed out
ssh: connect to host [remote-IP] port 9922: Operation timed out
lost connection
我还尝试了另一种方式，登录远程计算机并尝试通过 scp 将文件传输回本地计算机，但遇到了同样的问题。
sftp
我无法建立 sftp 连接：
sftp -oPort=9922 [remote-user]@[remote-IP]
光标似乎悬挂了几分钟，然后打印出：
ssh: connect to host [remote-IP] port 9922: Operation timed out
同步
与 scp 类似的问题：
rsync -ahvz -e 'ssh -p9922' /Users/[local-user]/Desktop/moving-files-ssh.txt [remote-user]@[remote-IP]:/
结果是：
ssh: connect to host [remote-IP] port 9922: Operation timed out
rsync: connection unexpectedly closed (0 bytes received so far) [sender]
rsync error: unexplained error (code 255) at /AppleInternal/BuildRoot/Library/Caches/com.apple.xbs/Sources/rsync/rsync-55/rsync/io.c(453) [sender=2.6.9]
有时这也会导致错误代码 12。
ssh配置
这是我的 ssh 配置中的内容：
# Host *
# ForwardAgent no
# ForwardX11 no
# PasswordAuthentication yes
# HostbasedAuthentication no
# GSSAPIAuthentication no
# GSSAPIDelegateCredentials no
# BatchMode no
# CheckHostIP yes
# AddressFamily any
# ConnectTimeout 0
# StrictHostKeyChecking ask
# IdentityFile ~/.ssh/id_rsa
# IdentityFile ~/.ssh/id_dsa
# IdentityFile ~/.ssh/id_ecdsa
# IdentityFile ~/.ssh/id_ed25519
# Port 22
# Ciphers aes128-ctr,aes192-ctr,aes256-ctr,aes128-cbc,3des-cbc
# MACs hmac-md5,hmac-sha1,[email protected]
# EscapeChar ~
# Tunnel no
# TunnelDevice any:any
# PermitLocalCommand no
# VisualHostKey no
# ProxyCommand ssh -q -W %h:%p gateway.example.com
# RekeyLimit 1G 1h
运行输出ssh -vvv
OpenSSH_8.1p1, LibreSSL 2.7.3
debug1: Reading configuration data /etc/ssh/ssh_config
debug1: /etc/ssh/ssh_config line 47: Applying options for *
debug2: resolve_canonicalize: hostname XXX.XX.XXX.XX is address
debug2: ssh_connect_direct
debug1: Connecting to XXX.XX.XXX.XX [XXX.XX.XXX.XX] port 9922.
debug1: Connection established.
debug1: identity file /Users/username/.ssh/id_rsa type 0
debug1: identity file /Users/username/.ssh/id_rsa-cert type -1
debug1: identity file /Users/username/.ssh/id_dsa type -1
debug1: identity file /Users/username/.ssh/id_dsa-cert type -1
debug1: identity file /Users/username/.ssh/id_ecdsa type -1
debug1: identity file /Users/username/.ssh/id_ecdsa-cert type -1
debug1: identity file /Users/username/.ssh/id_ed25519 type -1
debug1: identity file /Users/username/.ssh/id_ed25519-cert type -1
debug1: identity file /Users/username/.ssh/id_xmss type -1
debug1: identity file /Users/username/.ssh/id_xmss-cert type -1
debug1: Local version string SSH-2.0-OpenSSH_8.1
debug1: Remote protocol version 2.0, remote software version OpenSSH_7.6p1 Ubuntu-4ubuntu0.3
debug1: match: OpenSSH_7.6p1 Ubuntu-4ubuntu0.3 pat OpenSSH_7.0*,OpenSSH_7.1*,OpenSSH_7.2*,OpenSSH_7.3*,OpenSSH_7.4*,OpenSSH_7.5*,OpenSSH_7.6*,OpenSSH_7.7* compat 0x04000002
debug2: fd 3 setting O_NONBLOCK
debug1: Authenticating to XXX.XX.XXX.XX:9922 as 'username'
debug3: put_host_port: [XXX.XX.XXX.XX]:9922
debug3: hostkeys_foreach: reading file "/Users/username/.ssh/known_hosts"
debug3: record_hostkey: found key type ECDSA in file /Users/username/.ssh/known_hosts:1
debug3: load_hostkeys: loaded 1 keys from [XXX.XX.XXX.XX]:9922
debug3: order_hostkeyalgs: prefer hostkeyalgs: [email protected],[email protected],[email protected],ecdsa-sha2-nistp256,ecdsa-sha2-nistp384,ecdsa-sha2-nistp521
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-group14-sha256,diffie-hellman-group14-sha1,ext-info-c
debug2: host key algorithms: [email protected],[email protected],[email protected],ecdsa-sha2-nistp256,ecdsa-sha2-nistp384,ecdsa-sha2-nistp521,[email protected],[email protected],[email protected],[email protected],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]
debug2: ciphers stoc: [email protected],aes128-ctr,aes192-ctr,aes256-ctr,[email protected],[email protected]
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-group14-sha256,diffie-hellman-group14-sha1
debug2: host key algorithms: ssh-rsa,rsa-sha2-512,rsa-sha2-256,ecdsa-sha2-nistp256
debug2: ciphers ctos: [email protected],aes128-ctr,aes192-ctr,aes256-ctr,[email protected],[email protected]
debug2: ciphers stoc: [email protected],aes128-ctr,aes192-ctr,aes256-ctr,[email protected],[email protected]
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:XXXXXXXXXXXXXXXX
debug3: put_host_port: [XXX.XX.XXX.XX]:9922
debug3: put_host_port: [XXX.XX.XXX.XX]:9922
debug3: hostkeys_foreach: reading file "/Users/username/.ssh/known_hosts"
debug3: record_hostkey: found key type ECDSA in file /Users/username/.ssh/known_hosts:1
debug3: load_hostkeys: loaded 1 keys from [XXX.XX.XXX.XX]:9922
debug3: hostkeys_foreach: reading file "/Users/username/.ssh/known_hosts"
debug3: record_hostkey: found key type ECDSA in file /Users/username/.ssh/known_hosts:1
debug3: load_hostkeys: loaded 1 keys from [XXX.XX.XXX.XX]:9922
debug1: Host '[XXX.XX.XXX.XX]:9922' is known and matches the ECDSA host key.
debug1: Found key in /Users/username/.ssh/known_hosts:1
debug3: send packet: type 21
debug2: set_newkeys: mode 1
debug1: rekey out 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 in after 134217728 blocks
debug1: Will attempt key: /Users/username/.ssh/id_rsa RSA SHA256:XXXXXXXXXXXXXXXX
debug1: Will attempt key: /Users/username/.ssh/id_dsa
debug1: Will attempt key: /Users/username/.ssh/id_ecdsa
debug1: Will attempt key: /Users/username/.ssh/id_ed25519
debug1: Will attempt key: /Users/username/.ssh/id_xmss
debug2: pubkey_prepare: done
debug3: send packet: type 5
debug3: receive packet: type 7
debug1: SSH2_MSG_EXT_INFO received
debug1: kex_input_ext_info: server-sig-algs=<ssh-ed25519,ssh-rsa,rsa-sha2-256,rsa-sha2-512,ssh-dss,ecdsa-sha2-nistp256,ecdsa-sha2-nistp384,ecdsa-sha2-nistp521>
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: Offering public key: /Users/username/.ssh/id_rsa RSA SHA256:XXXXXXXXXXXXXXXXXXXX
debug3: send packet: type 50
debug2: we sent a publickey packet, wait for reply
debug3: receive packet: type 60
debug1: Server accepts key: /Users/username/.ssh/id_rsa RSA SHA256:XXXXXXXXXXXXXXXXXXXX
debug3: sign_and_send_pubkey: RSA SHA256:XXXXXXXXXXXXXXXXXXXX
debug3: sign_and_send_pubkey: signing using rsa-sha2-512