Connection Closed Error While Ssh
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Ssh Connection Closed Immediately
us Unix & Linux Questions Tags Users Badges Unanswered Ask Question _ Unix & Linux Stack Exchange is a question and answer ssh connection closed waiting for a privilege escalation password prompt site for users of Linux, FreeBSD and other Un*x-like operating systems. Join them; it only takes a minute: Sign up Here's how it works: Anybody can ask a question Anybody can answer The best answers are ssh connection closed immediately after login voted up and rise to the top SSH: “Connection closed by remote host” randomly while working on an interactive session up vote 2 down vote favorite I am working on a remote server, on which I do numerical simulation using the OpenFOAM computational fluid dynamics library. I built a collection of Python scripts to automate my parametric studies and they seem to be working well. I connect to the server using SSH,
Ssh Connection Closed By Preauth
and I launch the scripts in an interactive shell. Sometimes, under conditions I'm still unable to identify, the server closes the SSH session. I currently use the screen window manager as a workaround, but still seems like an issue to me. Here is an exemple of output I get:
or that sshd needs to be re-configured. This is not the case. Symptoms Connecting to SSH servers gives this message: $ ssh atom@example.com ssh_exchange_identification: Connection closed by remote host Or maybe this if using verbose mode. $ ssh -v atom@example.com OpenSSH_4.7p1, OpenSSL ssh connection closed by remote host 0.9.8g 19 Oct 2007 debug1: Reading configuration data /etc/ssh/ssh_config debug1: Applying options for * debug1: ssh connection closed by foreign host Connecting to example.com [10.65.0.2] port 22. debug1: Connection established. debug1: identity file /home/atom/.ssh/identity type -1 debug1: identity file /home/atom/.ssh/id_rsa type 1
Ssh Connection Closed By 1
debug1: identity file /home/atom/.ssh/id_dsa type -1 ssh_exchange_identification: Connection closed by remote host Solutions This can be caused by a number of issues, steps to test are as follows. Check /etc/hosts.deny and /etc/hosts.allow Many have reported configuring http://unix.stackexchange.com/questions/125413/ssh-connection-closed-by-remote-host-randomly-while-working-on-an-interactive these to values properly has helped. However, we've seen this issue even when hosts.* files were not a factor. root@host # grep sshd /etc/hosts.allow sshd: ALL Missing Dependencies This one typically happens after a glibc or openssl upgrade. Many distros can install updates to glibc or openssl libs and not require a restart to sshd. On any distro you can recognize it when after an update, then use lsof to see where sshd http://edoceo.com/notabene/ssh-exchange-identification has open files. Some will be pointed to DEL, because those libs were deleted on update. ~ # lsof -n | grep ssh | grep DEL When an SSH connection comes in the sshd daemon forks and attempts to attach (ld) these lib files, and fails resulting in this error. Corrupted Fingerprint / Keys Some how one or the other of the fingerprints or keys has become corrupted (did you manually edit one of these files?). Remove the server-side fingerprint in the clients ~/.ssh/known_hosts and try again. When you re-connect you will be prompted to accept the host identity again. If you are able to access the machine another way you may want to back-out and re-create the server-side ~/.ssh/authorized_keys. Along the same lines as this issue, if the files /etc/ssh/*key* are removed and sshd is not restarted then this error will show up too. Check for the key files in the sshd configuration directory. Heavy Server Load Have also seen this happen when server was under heavy load from for example, brute force attack. Increase the amount of connections sshd can run. root@host # grep MaxStartups /etc/ssh/sshd_config # Old Style MaxStartups 12 # New Style MaxStartups 10:20:30 Please enable JavaScript to view the comments powered by Disqus. Loading Comments from Disqus... APIs | Impe
here for a quick overview of the site Help Center Detailed answers to any questions you http://superuser.com/questions/630281/not-able-to-connect-with-server-connection-closed-by-remote-server might have Meta Discuss the workings and policies of this site About Us Learn more about Stack Overflow the company Business Learn more about hiring developers or posting http://serverfault.com/questions/394350/connection-closed-by-ip-linux-redhat-while-ssh-to-amazon-server ads with us Super User Questions Tags Users Badges Unanswered Ask Question _ Super User is a question and answer site for computer enthusiasts and power users. Join connection closed them; it only takes a minute: Sign up Here's how it works: Anybody can ask a question Anybody can answer The best answers are voted up and rise to the top Not able to connect with server. Connection closed by remote server up vote 1 down vote favorite 2 I am trying to ssh remote ssh connection closed server from my local server. But whenever i run ssh command: ssh root@x.x.x.x I get error: Connection closed by x.x.x.x Output of ssh -v -v -v -v root@x.x.x.x is: OpenSSH_5.9p1 Debian-5ubuntu1.1, OpenSSL 1.0.1 14 Mar 2012 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 x.x.x.x [x.x.x.x] port 22. debug1: Connection established. debug3: Incorrect RSA1 identifier debug3: Could not load "/home/mona/.ssh/id_rsa" as a RSA1 public key debug1: identity file /home/mona/.ssh/id_rsa type 1 debug1: Checking blacklist file /usr/share/ssh/blacklist.RSA-2048 debug1: Checking blacklist file /etc/ssh/blacklist.RSA-2048 debug1: identity file /home/mona/.ssh/id_rsa-cert type -1 debug1: identity file /home/mona/.ssh/id_dsa type -1 debug1: identity file /home/mona/.ssh/id_dsa-cert type -1 debug1: identity file /home/mona/.ssh/id_ecdsa type -1 debug1: identity file /home/mona/.ssh/id_ecdsa-cert type -1 debug1: Remote protocol version 2.0, remote software version OpenSSH_5.9p1 Debian-5ubuntu1.1 debug1: match: OpenSSH_5.9p1 Debian-5ubuntu1.1 pat OpenSSH* debug1: Enabling compatibility mode for protocol 2.0 debug1: Local version string SSH-2.0-OpenSSH_5.9p1 Debian-5ubuntu1.1 debug2: fd 3 setting O_NONBLOCK debug3: load_hostkeys: loading entries for host "151.236.220.15" fr
Start here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies of this site About Us Learn more about Stack Overflow the company Business Learn more about hiring developers or posting ads with us Server Fault Questions Tags Users Badges Unanswered Ask Question _ Server Fault is a question and answer site for system and network administrators. Join them; it only takes a minute: Sign up Here's how it works: Anybody can ask a question Anybody can answer The best answers are voted up and rise to the top Connection closed by IP ( Linux Redhat) while ssh to Amazon server up vote 1 down vote favorite I am accessing my server on Amazon AWS via ssh and suddenly its no more accessible via ssh. I am getting " Connection closed by 'Live IP Address of Server' " error. I think there are too many connections or may be some other problem because I am getting the password prompt from the server, after giving the right password I am getting that error and connection is closed. Now I don't have any other way to access my server, Please help how can I restart ssh the server or if there is any other way to get to the server. Regards Here is the ssh -vvvv result [root@286457 ~]# ssh -vvvvvvvv toqeer@IP OpenSSH_5.3p1, OpenSSL 1.0.0-fips 29 Mar 2010 debug1: Reading configuration data /etc/ssh/ssh_config debug1: Applying options for * debug2: ssh_connect: needpriv 0 debug1: Connecting to IP [IP] port 22. debug1: Connection established. debug1: permanently_set_uid: 0/0 debug1: identity file /root/.ssh/identity type -1 debug3: Not a RSA1 key file /root/.ssh/id_rsa. debug2: key_type_from_name: unknown key type '-----BEGIN' debug3: key_read: missing keytype debug3: key_read: missing whitespace #### MANUAL SNIP; ABOVE LINE REPEATED OVER 20 TIMES #### debug2: key_type_from_name: unknown key type '-----END' debug3: key_read: missing keytype debug1: identity file /root/.ssh/id_rsa type