Error Reading Ssh Protocol Banner
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Error Reading Ssh Protocol Banner Errno 104 Connection Reset By Peer
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like you, helping each other. Join them; it only takes a minute: Sign up Paramiko Error: Error reading SSH protocol banner up vote 4 down vote favorite 4 I'm using Fabric for my build script. I just error:paramiko.transport:exception: error reading ssh protocol banner cloned one of my VMs and created a new server. The Fabric script (which uses paramiko underneath) works fine one server but not the other. Since it's a clone I don't know what could be different but everytime I run my Fabric script I get the error Error reading SSH protocol banner. This script is connecting with the same user on both servers. The script works fine on all other servers except this new one ansible error reading ssh protocol banner that I just clones. The only thing that is radically different is the IP address which is totally different range. Any ideas on what could be causing this? python linux ssh fabric paramiko share|improve this question asked Aug 26 '11 at 14:33 Mridang Agarwalla 11.8k37130276 add a comment| 2 Answers 2 active oldest votes up vote 7 down vote accepted This issue didn't lie with Paramiko, Fabric or the SSH daemon. It was simply a firewall configuration in ISPs internal network. For some reason, they don't allow communication between different subnets of theirs. We couldn't really fix the firewall configuration so instead we switched all our IPs to be on the same subnet. share|improve this answer answered Aug 31 '11 at 5:04 Mridang Agarwalla 11.8k37130276 I am geting same error. but In my case host is amazon instance what should I do in that case –sagar Oct 23 '13 at 8:25 add a comment| up vote 2 down vote Try changing the banner timeout from 15 seconds to 30 secs in the transport.py file. Also, it could be that the sshd daemon on the server is hung. Can you SSH into it manually? share|improve this answer answered Aug 26 '11 at 16:33 Gabriel Ross 3,28311625 I edited transport.py and changed the timeout to 30 seconds but it didn't help.
Sign in Pricing Blog Support Search GitHub This repository Watch 229 Star 2,902 Fork 820 paramiko/paramiko Code Issues 232 Pull requests 76 Projects 0 Wiki Pulse Graphs New issue "SSHException: Error reading SSH
Error Reading Ssh Protocol Banner Fabric
protocol banner" when using ProxyCommand #673 Closed Depado opened this Issue Feb 3, 2016 error reading ssh protocol banner errno 10054 · 15 comments Projects None yet Labels Bug Needs investigation Milestone No milestone Assignees No one assigned
Raise Sshexception('error Reading Ssh Protocol Banner' + Str(e))
7 participants Depado commented Feb 3, 2016 Hello, It's been a few days and I'm still struggling with this, I think it's quite a known issue but wasn't able to find a workaround. Paramiko 1.16.0 http://stackoverflow.com/questions/7206272/paramiko-error-error-reading-ssh-protocol-banner Python 3.5.1 Operating System : Archlinux Below is a simplified version of my actual code that throws the same error : import os import paramiko # Loading ssh configuration to get the IP and user of the desired host (here 'bastion') cfg = paramiko.SSHConfig() with open(os.path.expanduser("~/.ssh/config")) as f: cfg.parse(f) host_cfg = cfg.lookup('bastion') sock = paramiko.ProxyCommand("ssh -W %h:%p {}@{}".format(host_cfg.get('user', 'root'), host_cfg.get('hostname'))) # Client Setup client = paramiko.SSHClient() client.load_system_host_keys() client.set_missing_host_key_policy(paramiko.AutoAddPolicy()) # https://github.com/paramiko/paramiko/issues/673 Connect and execute command client.connect("my.ip.ad.dr", username='root', sock=sock) (stdin, stdout, stderr) = client.exec_command("echo 'Hello World !'") for line in stdout.readlines(): print(line) client.close() Note that the whole parsing the ssh config thing is simplified because I know this entry is in the ssh config. (And yes I'm sure the error doesn't come from that because the generated ProxyCommand is correct) Of course it raises the error when executing the client.connect line. The ProxyCommand is correct, tested multiple times and works just fine in my ~/.ssh/config. When using it with the command line, it creates an entry in the logs of my bastion. When using it within paramiko it doesn't generate an entry in the logs. I also tested using the netcat approach like this : sock = paramiko.ProxyCommand("ssh {}@{} nc %h %p".format(host_cfg.get('user', 'root'), host_cfg.get('hostname'))) This time it generates an entry in the logs of my bastion (even though it still raises this error) but closes the connection immediatly. Anyone having the same issue and could help me with that ? ktbyers commented Feb 3, 2016 @Depado I am having a similar issue connecting to Cisco devices through a proxy. In other words using ProxyCommand and I am receiving "SSHException: Error reading SSH protocol banner". Does it fix
Sign in Pricing Blog Support Search GitHub This repository Watch 229 Star 2,902 Fork 820 paramiko/paramiko Code Issues 232 https://github.com/paramiko/paramiko/issues/664 Pull requests 76 Projects 0 Wiki Pulse Graphs New issue 'Error reading SSH protocol banner' got when try to connect in multi-thread #664 Closed boyxiaolong opened this Issue Jan 25, 2016 · 2 comments Projects None yet Labels None yet Milestone No milestone Assignees No one assigned 4 participants boyxiaolong commented Jan error reading 25, 2016 I try to use sshclient to conenct the same ssh server in multirhread. when thread is below 10, it is ok. when more than 20 threads are opened, Error reading SSH protocol banner is got. radssh commented Jan 27, 2016 This is probably due to the server side dropping connections when handling accepting error reading ssh connections. There is typically a default limit of 10 connections that are permitted in an unauthenticated state. See sshd_config option MaxStartups description on your server host for default values and details. You may be able to use a single Transport (or SSHClient) and handle individual Channels with independent threads, but be aware that there is another sshd_config parameter limit that you may encounter MaxSessions that limits the number of concurrent sessions (Channels) within a single Transport connection. crielly360 commented Oct 11, 2016 We encountered this issue while simultaneously opening >10 connections. We increased MaxStartups value and added retry logic to handle it. bitprophet closed this Oct 11, 2016 Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment Contact GitHub API Training Shop Blog About © 2016 GitHub, Inc. Terms Privacy Security Status Help You can't perform that action at this time. You signed in with another tab or window. Reload to refresh you