Hello, Not sure it is the same problem here, but I cannot connect to my machine if go through NAT. If I connect directly from LAN everything works, but if I use the external IP, then I get connection reset after debug1: SSH2_MSG_KEXINIT sent.
Client and server is the same machine. I tried to set MTU to 1400 and 400 with no effect, also changed the net.ipv4.tcp_rmem setting and tried different cipher algorithms with no luck. Linux 3.16.0-31-generic #41-Ubuntu Ubuntu 14.10 -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to openssh in Ubuntu. https://bugs.launchpad.net/bugs/708493 Title: Can't login anymore: Read from socket failed: Connection reset by peer Status in openssh package in Ubuntu: Confirmed Status in openssh package in Debian: New Bug description: After todays update to 1:5.7p1-1ubuntu1 I cannot login to SOME (!) of my servers. Example of a server failing: ~$ ssh -v root@mail OpenSSH_5.7p1 Debian-1ubuntu1, OpenSSL 0.9.8o 01 Jun 2010 debug1: Reading configuration data /home/hildeb/.ssh/config debug1: Reading configuration data /etc/ssh/ssh_config debug1: Applying options for * debug1: Connecting to mail [141.42.202.200] port 22. debug1: Connection established. debug1: identity file /home/hildeb/.ssh/id_rsa type -1 debug1: identity file /home/hildeb/.ssh/id_rsa-cert type -1 debug1: identity file /home/hildeb/.ssh/id_dsa type 2 debug1: Checking blacklist file /usr/share/ssh/blacklist.DSA-1024 debug1: Checking blacklist file /etc/ssh/blacklist.DSA-1024 debug1: identity file /home/hildeb/.ssh/id_dsa-cert type -1 debug1: identity file /home/hildeb/.ssh/id_ecdsa type -1 debug1: identity file /home/hildeb/.ssh/id_ecdsa-cert type -1 debug1: Remote protocol version 1.99, remote software version OpenSSH_5.5p1 Debian-6 debug1: match: OpenSSH_5.5p1 Debian-6 pat OpenSSH* debug1: Enabling compatibility mode for protocol 2.0 debug1: Local version string SSH-2.0-OpenSSH_5.7p1 Debian-1ubuntu1 debug1: SSH2_MSG_KEXINIT sent debug1: SSH2_MSG_KEXINIT received debug1: kex: server->client aes128-ctr hmac-md5 none debug1: kex: client->server aes128-ctr hmac-md5 none debug1: SSH2_MSG_KEX_DH_GEX_REQUEST(1024<1024<8192) sent debug1: expecting SSH2_MSG_KEX_DH_GEX_GROUP Read from socket failed: Connection reset by peer There is NOTHING in daemon.log, auth.log or syslog on the server I'm trying to connect to. Example of a server NOT failing: $ ssh -v root@netsight OpenSSH_5.7p1 Debian-1ubuntu1, OpenSSL 0.9.8o 01 Jun 2010 debug1: Reading configuration data /home/hildeb/.ssh/config debug1: Reading configuration data /etc/ssh/ssh_config debug1: Applying options for * debug1: Connecting to netsight [10.47.2.222] port 22. debug1: Connection established. debug1: identity file /home/hildeb/.ssh/id_rsa type -1 debug1: identity file /home/hildeb/.ssh/id_rsa-cert type -1 debug1: identity file /home/hildeb/.ssh/id_dsa type 2 debug1: Checking blacklist file /usr/share/ssh/blacklist.DSA-1024 debug1: Checking blacklist file /etc/ssh/blacklist.DSA-1024 debug1: identity file /home/hildeb/.ssh/id_dsa-cert type -1 debug1: identity file /home/hildeb/.ssh/id_ecdsa type -1 debug1: identity file /home/hildeb/.ssh/id_ecdsa-cert type -1 debug1: Remote protocol version 2.0, remote software version OpenSSH_5.5p1 Debian-6 debug1: match: OpenSSH_5.5p1 Debian-6 pat OpenSSH* debug1: Enabling compatibility mode for protocol 2.0 debug1: Local version string SSH-2.0-OpenSSH_5.7p1 Debian-1ubuntu1 debug1: SSH2_MSG_KEXINIT sent debug1: SSH2_MSG_KEXINIT received debug1: kex: server->client aes128-ctr hmac-md5 none debug1: kex: client->server aes128-ctr hmac-md5 none debug1: SSH2_MSG_KEX_DH_GEX_REQUEST(1024<1024<8192) sent debug1: expecting SSH2_MSG_KEX_DH_GEX_GROUP debug1: SSH2_MSG_KEX_DH_GEX_INIT sent debug1: expecting SSH2_MSG_KEX_DH_GEX_REPLY debug1: Server host key: RSA 18:ce:76:c7:7c:f4:98:94:28:8f:62:4a:31:e8:5b:c9 debug1: Host 'netsight' is known and matches the RSA host key. debug1: Found key in /home/hildeb/.ssh/known_hosts:56 debug1: ssh_rsa_verify: signature correct debug1: SSH2_MSG_NEWKEYS sent debug1: expecting SSH2_MSG_NEWKEYS debug1: SSH2_MSG_NEWKEYS received debug1: Roaming not allowed by server debug1: SSH2_MSG_SERVICE_REQUEST sent debug1: SSH2_MSG_SERVICE_ACCEPT received debug1: Authentications that can continue: publickey,keyboard-interactive debug1: Next authentication method: publickey debug1: Offering DSA public key: /home/hildeb/.ssh/id_dsa debug1: Server accepts key: pkalg ssh-dss blen 433 debug1: Authentication succeeded (publickey). Authenticated to netsight ([10.47.2.222]:22). debug1: channel 0: new [client-session] debug1: Requesting no-more-sessi...@openssh.com debug1: Entering interactive session. debug1: Sending environment. debug1: Sending env LC_MESSAGES = en_US.utf8 debug1: Sending env LANG = de_DE.UTF-8 ProblemType: Bug DistroRelease: Ubuntu 11.04 Package: openssh-client 1:5.7p1-1ubuntu1 ProcVersionSignature: Ubuntu 2.6.37-12.26-generic 2.6.37 Uname: Linux 2.6.37-12-generic x86_64 Architecture: amd64 Date: Thu Jan 27 09:13:15 2011 ProcEnviron: LANGUAGE=en_US:en LANG=de_DE.UTF-8 LC_MESSAGES=en_US.utf8 SHELL=/bin/bash RelatedPackageVersions: ssh-askpass N/A libpam-ssh N/A keychain N/A ssh-askpass-gnome 1:5.7p1-1ubuntu1 SSHClientVersion: OpenSSH_5.7p1 Debian-1ubuntu1, OpenSSL 0.9.8o 01 Jun 2010 SourcePackage: openssh To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/openssh/+bug/708493/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
