当我尝试通过SSH连接特定的服务器时，我得到：连接closures10.5.8.1（更详细的后）
我看到很多类似于我的错误，但似乎适用于其他的解决方法，不在这里工作。
解决方法是减less密码选项，以减less服务器和客户端之间的查询/响应stream。 [ 1,2等等，但我不能发布超过2个链接…]
在我的〜/ .ssh / config之后
Host * SendEnv LANG LC_* HashKnownHosts yes GSSAPIAuthentication yes GSSAPIDelegateCredentials no Ciphers aes128-ctr,aes192-ctr,aes256-ctr,arcfour256,arcfour128,aes128-cbc,3des-cbc 这里是ssh连接日志的结果
ssh -vvv -lmyLogon 10.5.8.1 OpenSSH_6.4, OpenSSL 1.0.1e-fips 11 Feb 2013 debug1: Reading configuration data /home/patrick/.ssh/config debug1: /home/patrick/.ssh/config line 1: Applying options for * debug3: cipher ok: aes128-ctr [aes128-ctr,aes192-ctr,aes256-ctr,arcfour256,arcfour128,aes128-cbc,3des-cbc] debug3: cipher ok: aes192-ctr [aes128-ctr,aes192-ctr,aes256-ctr,arcfour256,arcfour128,aes128-cbc,3des-cbc] debug3: cipher ok: aes256-ctr [aes128-ctr,aes192-ctr,aes256-ctr,arcfour256,arcfour128,aes128-cbc,3des-cbc] debug3: cipher ok: arcfour256 [aes128-ctr,aes192-ctr,aes256-ctr,arcfour256,arcfour128,aes128-cbc,3des-cbc] debug3: cipher ok: arcfour128 [aes128-ctr,aes192-ctr,aes256-ctr,arcfour256,arcfour128,aes128-cbc,3des-cbc] debug3: cipher ok: aes128-cbc [aes128-ctr,aes192-ctr,aes256-ctr,arcfour256,arcfour128,aes128-cbc,3des-cbc] debug3: cipher ok: 3des-cbc [aes128-ctr,aes192-ctr,aes256-ctr,arcfour256,arcfour128,aes128-cbc,3des-cbc] debug3: ciphers ok: [aes128-ctr,aes192-ctr,aes256-ctr,arcfour256,arcfour128,aes128-cbc,3des-cbc] debug1: Reading configuration data /etc/ssh/ssh_config debug1: /etc/ssh/ssh_config line 51: Applying options for * debug2: ssh_connect: needpriv 0 debug1: Connecting to 10.5.8.1 [10.5.8.1] port 22. debug1: Connection established. debug3: Incorrect RSA1 identifier debug3: Could not load "/home/patrick/.ssh/id_rsa" as a RSA1 public key debug1: identity file /home/patrick/.ssh/id_rsa type 1 debug1: identity file /home/patrick/.ssh/id_rsa-cert type -1 debug3: Incorrect RSA1 identifier debug3: Could not load "/home/patrick/.ssh/id_dsa" as a RSA1 public key debug1: identity file /home/patrick/.ssh/id_dsa type 2 debug1: identity file /home/patrick/.ssh/id_dsa-cert type -1 debug1: identity file /home/patrick/.ssh/id_ecdsa type -1 debug1: identity file /home/patrick/.ssh/id_ecdsa-cert type -1 debug1: Enabling compatibility mode for protocol 2.0 debug1: Local version string SSH-2.0-OpenSSH_6.4 debug1: Remote protocol version 2.0, remote software version paramiko_1.10.0 debug1: no match: paramiko_1.10.0 debug2: fd 3 setting O_NONBLOCK debug3: load_hostkeys: loading entries for host "10.5.8.1" from file "/home/patrick/.ssh/known_hosts" debug3: load_hostkeys: loaded 0 keys debug1: SSH2_MSG_KEXINIT sent debug1: SSH2_MSG_KEXINIT received debug2: kex_parse_kexinit: ecdh-sha2-nistp256,ecdh-sha2-nistp384,ecdh-sha2-nistp521,diffie-hellman-group-exchange-sha256,diffie-hellman-group-exchange-sha1,diffie-hellman-group14-sha1,diffie-hellman-group1-sha1 debug2: kex_parse_kexinit: [email protected],[email protected],[email protected],[email protected],[email protected],[email protected],[email protected],ecdsa-sha2-nistp256,ecdsa-sha2-nistp384,ecdsa-sha2-nistp521,ssh-rsa,ssh-dss debug2: kex_parse_kexinit: aes128-ctr,aes192-ctr,aes256-ctr,arcfour256,arcfour128,aes128-cbc,3des-cbc debug2: kex_parse_kexinit: aes128-ctr,aes192-ctr,aes256-ctr,arcfour256,arcfour128,aes128-cbc,3des-cbc debug2: kex_parse_kexinit: [email protected],[email protected],[email protected],[email protected],[email protected],[email protected],[email protected],[email protected],[email protected],hmac-md5,hmac-sha1,[email protected],[email protected],hmac-sha2-256,hmac-sha2-512,hmac-ripemd160,[email protected],hmac-sha1-96,hmac-md5-96 debug2: kex_parse_kexinit: [email protected],[email protected],[email protected],[email protected],[email protected],[email protected],[email protected],[email protected],[email protected],hmac-md5,hmac-sha1,[email protected],[email protected],hmac-sha2-256,hmac-sha2-512,hmac-ripemd160,[email protected],hmac-sha1-96,hmac-md5-96 debug2: kex_parse_kexinit: none,[email protected],zlib debug2: kex_parse_kexinit: none,[email protected],zlib debug2: kex_parse_kexinit: debug2: kex_parse_kexinit: debug2: kex_parse_kexinit: first_kex_follows 0 debug2: kex_parse_kexinit: reserved 0 debug2: kex_parse_kexinit: diffie-hellman-group-exchange-sha1 debug2: kex_parse_kexinit: ssh-dss debug2: kex_parse_kexinit: aes128-ctr,aes256-ctr debug2: kex_parse_kexinit: aes128-ctr,aes256-ctr debug2: kex_parse_kexinit: hmac-sha1 debug2: kex_parse_kexinit: hmac-sha1 debug2: kex_parse_kexinit: none debug2: kex_parse_kexinit: none debug2: kex_parse_kexinit: debug2: kex_parse_kexinit: debug2: kex_parse_kexinit: first_kex_follows 0 debug2: kex_parse_kexinit: reserved 0 debug2: mac_setup: found hmac-sha1 debug1: kex: server->client aes128-ctr hmac-sha1 none debug2: mac_setup: found hmac-sha1 debug1: kex: client->server aes128-ctr hmac-sha1 none debug1: SSH2_MSG_KEX_DH_GEX_REQUEST(1024<7680<8192) sent debug1: expecting SSH2_MSG_KEX_DH_GEX_GROUP debug2: dh_gen_key: priv key bits set: 169/320 debug2: bits set: 3071/6144 debug1: SSH2_MSG_KEX_DH_GEX_INIT sent debug1: expecting SSH2_MSG_KEX_DH_GEX_REPLY Connection closed by 10.5.8.1
在通过ssh-keygen -R 10.5.8.1在~/.ssh/know_hosts文件中删除ssh-keygen -R 10.5.8.1试之后，我得到如下所示的日志：
ssh -vvv -lmyLogon 10.5.8.1 OpenSSH_6.4, OpenSSL 1.0.1e-fips 11 Feb 2013 debug1: Reading configuration data /home/patrick/.ssh/config debug1: /home/patrick/.ssh/config line 1: Applying options for * debug3: cipher ok: aes256-ctr [aes256-ctr] debug3: ciphers ok: [aes256-ctr] debug2: mac_setup: found hmac-md5 debug3: mac ok: hmac-md5 [hmac-md5,hmac-sha1] debug2: mac_setup: found hmac-sha1 debug3: mac ok: hmac-sha1 [hmac-md5,hmac-sha1] debug3: macs ok: [hmac-md5,hmac-sha1] debug1: Reading configuration data /etc/ssh/ssh_config debug1: /etc/ssh/ssh_config line 51: Applying options for * debug2: ssh_connect: needpriv 0 debug1: Connecting to 10.5.8.1 [10.5.8.1] port 22. debug1: Connection established. debug3: Incorrect RSA1 identifier debug3: Could not load "/home/patrick/.ssh/id_rsa" as a RSA1 public key debug1: identity file /home/patrick/.ssh/id_rsa type 1 debug1: identity file /home/patrick/.ssh/id_rsa-cert type -1 debug3: Incorrect RSA1 identifier debug3: Could not load "/home/patrick/.ssh/id_dsa" as a RSA1 public key debug1: identity file /home/patrick/.ssh/id_dsa type 2 debug1: identity file /home/patrick/.ssh/id_dsa-cert type -1 debug1: identity file /home/patrick/.ssh/id_ecdsa type -1 debug1: identity file /home/patrick/.ssh/id_ecdsa-cert type -1 debug1: Enabling compatibility mode for protocol 2.0 debug1: Local version string SSH-2.0-OpenSSH_6.4 debug1: Remote protocol version 2.0, remote software version paramiko_1.10.0 debug1: no match: paramiko_1.10.0 debug2: fd 3 setting O_NONBLOCK debug3: load_hostkeys: loading entries for host "10.5.8.1" from file "/home/patrick/.ssh/known_hosts" debug3: load_hostkeys: loaded 0 keys debug1: SSH2_MSG_KEXINIT sent debug1: SSH2_MSG_KEXINIT received debug2: kex_parse_kexinit: ecdh-sha2-nistp256,ecdh-sha2-nistp384,ecdh-sha2-nistp521,diffie-hellman-group-exchange-sha256,diffie-hellman-group-exchange-sha1,diffie-hellman-group14-sha1,diffie-hellman-group1-sha1 debug2: kex_parse_kexinit: [email protected],[email protected],[email protected],[email protected],[email protected],[email protected],[email protected],ecdsa-sha2-nistp256,ecdsa-sha2-nistp384,ecdsa-sha2-nistp521,ssh-rsa,ssh-dss debug2: kex_parse_kexinit: aes256-ctr debug2: kex_parse_kexinit: aes256-ctr debug2: kex_parse_kexinit: hmac-md5,hmac-sha1 debug2: kex_parse_kexinit: hmac-md5,hmac-sha1 debug2: kex_parse_kexinit: none,[email protected],zlib debug2: kex_parse_kexinit: none,[email protected],zlib debug2: kex_parse_kexinit: debug2: kex_parse_kexinit: debug2: kex_parse_kexinit: first_kex_follows 0 debug2: kex_parse_kexinit: reserved 0 debug2: kex_parse_kexinit: diffie-hellman-group-exchange-sha1 debug2: kex_parse_kexinit: ssh-dss debug2: kex_parse_kexinit: aes128-ctr,aes256-ctr debug2: kex_parse_kexinit: aes128-ctr,aes256-ctr debug2: kex_parse_kexinit: hmac-sha1 debug2: kex_parse_kexinit: hmac-sha1 debug2: kex_parse_kexinit: none debug2: kex_parse_kexinit: none debug2: kex_parse_kexinit: debug2: kex_parse_kexinit: debug2: kex_parse_kexinit: first_kex_follows 0 debug2: kex_parse_kexinit: reserved 0 debug2: mac_setup: found hmac-sha1 debug1: kex: server->client aes256-ctr hmac-sha1 none debug2: mac_setup: found hmac-sha1 debug1: kex: client->server aes256-ctr hmac-sha1 none debug1: SSH2_MSG_KEX_DH_GEX_REQUEST(1024<8192<8192) sent debug1: expecting SSH2_MSG_KEX_DH_GEX_GROUP debug2: dh_gen_key: priv key bits set: 260/512 debug2: bits set: 3010/6144 debug1: SSH2_MSG_KEX_DH_GEX_INIT sent debug1: expecting SSH2_MSG_KEX_DH_GEX_REPLY debug1: Server host key: DSA 5b:d6:fa:56:9a:56:24:db:5a:1d:a3:22:95:6a:26:78 debug3: load_hostkeys: loading entries for host "10.5.8.1" from file "/home/patrick/.ssh/known_hosts" debug3: load_hostkeys: loaded 0 keys The authenticity of host '10.5.8.1 (10.5.8.1)' can't be established. DSA key fingerprint is 5b:d6:fa:56:9a:56:24:db:5a:1d:a3:22:95:6a:26:78. Are you sure you want to continue connecting (yes/no)? yes Warning: Permanently added '10.5.8.1' (DSA) to the list of known hosts. debug2: bits set: 3080/6144 debug1: ssh_dss_verify: signature correct debug2: kex_derive_keys debug2: set_newkeys: mode 1 debug1: SSH2_MSG_NEWKEYS sent debug1: expecting SSH2_MSG_NEWKEYS debug2: set_newkeys: mode 0 debug1: SSH2_MSG_NEWKEYS received debug1: Roaming not allowed by server debug1: SSH2_MSG_SERVICE_REQUEST sent Connection closed by 10.5.8.1
显然，我testing了默认的configuration，在我的〜/ .ssh / know_hosts文件中删除了这个服务器的条目，试图find一个名为paramiko的ssh而没有成功，试图一次只放一个Cipher。没有更多的想法。
我没有访问远程服务器。 我在Linux pfa-fedora 3.16.6-200.fc20.i686 #1 SMP Wed Oct 15 13:48:38 UTC 2014 i686 i686 i386 GNU/Linux
与此StackOverflow问题有关
有一个类似的问题，并find了解决办法。
这与接口的MTUconfiguration有关。
不知何故，一个较小的值使它工作。 （这是9001）
sudo ifconfig vpn0 mtu 576