[SOLVED] issues sshing from some remote hosts

Had a quick in some of these threads and couldn't find something similar. I am having an issue when it comes to connecting via ssh from some ip addresses. example from some (very limited) end points, it connects fine including internally to my network and externally so i know my port forwarding is working. Others it doesnt work at all and just times out.
I have checked to see if my isp is blocking ssh from some ip's so i made available another linux host to try and ssh into and it works fine from the same location that i cant connect to my arch box on.
I have also done tests to see if this is an issue with the way mac ssh via terminal or windows ssh via putty are interacting but have ruled that out.
after trying to ssh into the box via ssh -vvvvv hostname it looks like its failing somewhere at the key exchange. ( i am not sure what i need to be looking for here but i am hoping that someone can help me out.
changed names of hosts etc below.
[login@remotehost ~]$ ssh -vvvvvv archbox.net
OpenSSH_6.6.1, OpenSSL 1.0.1h 5 Jun 2014
debug1: Reading configuration data /etc/ssh/ssh_config
debug2: ssh_connect: needpriv 0
debug1: Connecting to archbox.net [X.X.X.X] port 22.
debug1: Connection established.
debug1: identity file /home/remotehost/.ssh/id_rsa type -1
debug1: identity file /home/remotehost/.ssh/id_rsa-cert type -1
debug1: identity file /home/remotehost/.ssh/id_dsa type -1
debug1: identity file /home/remotehost/.ssh/id_dsa-cert type -1
debug1: identity file /home/remotehost/.ssh/id_ecdsa type -1
debug1: identity file /home/remotehost/.ssh/id_ecdsa-cert type -1
debug1: identity file /home/remotehost/.ssh/id_ed25519 type -1
debug1: identity file /home/remotehost/.ssh/id_ed25519-cert type -1
debug1: Enabling compatibility mode for protocol 2.0
debug1: Local version string SSH-2.0-OpenSSH_6.6.1
debug1: Remote protocol version 2.0, remote software version OpenSSH_6.6.1
debug1: match: OpenSSH_6.6.1 pat OpenSSH_6.6.1* compat 0x04000000
debug2: fd 3 setting O_NONBLOCK
debug3: load_hostkeys: loading entries for host "archbox.net" from file "/home/remotehost/.ssh/known_hosts"
debug3: load_hostkeys: loaded 0 keys
debug1: SSH2_MSG_KEXINIT sent
Last edited by spudicus (2014-07-07 03:34:40)

OK for those who are interested. Issue was due to MTU being set to 1500. set to 1492 and tested OK.
Marked as solved

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LoggingProvider.Logger.Info("This is what the host sent to you: " + input+". Readed chars=" + readedChars);
try
string orderResultFormat = Encoding.ASCII.GetString(Encoding.ASCII.GetBytes("\xB")) + @"MSH|^~\&|Instrument|Laboratory|LIS|LIS Facility|20120427123212+0100||ORL^O34^ORL_O34| 11|P|2.5.1||||||UNICODE UTF-8|||LAB-28^IHE" + Environment.NewLine + "MSA|AA|10" + Environment.NewLine + @"PID|||patientId||""""||19700101|M" + Environment.NewLine + "SPM|1|sampleId&ROCHE||ORH^^HL70487|||||||P^^HL70369" + Environment.NewLine + "SAC|||sampleId" + Environment.NewLine + "ORC|OK|orderId|||SC||||20120427123212" + Encoding.ASCII.GetString(Encoding.ASCII.GetBytes("\x1c\x0d"));
writer.Write(orderResultFormat);
catch (Exception e)
LoggingProvider.Logger.Exception("Unexpected exception while writting the response", e);
client.Close();
break;
catch (Exception ex)
LoggingProvider.Logger.Exception("Unexpected exception while Reading the request", ex);
client.Close();
break;
}).Wait();
public override bool OnStart()
// Set the maximum number of concurrent connections
ServicePointManager.DefaultConnectionLimit = 12;
DiagnosticMonitor.Start("Microsoft.WindowsAzure.Plugins.Diagnostics.ConnectionString");
RoleEnvironment.Changing += RoleEnvironment_Changing;
return base.OnStart();
private void RoleEnvironment_Changing(object sender, RoleEnvironmentChangingEventArgs e)
// If a configuration setting is changing
LoggingProvider.Logger.Info("RoleEnvironment is changing....");
if (e.Changes.Any(change => change is RoleEnvironmentConfigurationSettingChange))
// Set e.Cancel to true to restart this role instance
e.Cancel = true;
As you can see, nothing special is being done. I've used the RoleEnvironment.CurrentRoleInstance.InstanceEndpoints to retrieve the current IPEndpoint.
Running the Cloud Service in the Windows Azure Compute Emulator everything works fine, but when I deploy it in Azure, then I receive the following Exception:
2014-08-06 14:55:23,816 [Role Start Thread] INFO EMAC Log - TcpListenerWorkerRole entry point called
2014-08-06 14:55:24,145 [Role Start Thread] INFO EMAC Log - TcpListener started at '100.74.10.55:10100'
2014-08-06 15:06:19,375 [9] INFO EMAC Log - Client connected. Address='196.3.50.254:51934'
2014-08-06 15:06:19,375 [9] INFO EMAC Log - Buffer size: 65536
2014-08-06 15:06:45,491 [9] FATAL EMAC Log - Unexpected exception while Reading the request
System.IO.IOException: Unable to read data from the transport connection: An existing connection was forcibly closed by the remote host. ---> System.Net.Sockets.SocketException: An existing connection was forcibly closed by the remote host
at System.Net.Sockets.NetworkStream.Read(Byte[] buffer, Int32 offset, Int32 size)
--- End of inner exception stack trace ---
at System.Net.Sockets.NetworkStream.Read(Byte[] buffer, Int32 offset, Int32 size)
at System.IO.StreamReader.ReadBuffer(Char[] userBuffer, Int32 userOffset, Int32 desiredChars, Boolean& readToUserBuffer)
at System.IO.StreamReader.Read(Char[] buffer, Int32 index, Int32 count)
at TcpListenerWorkerRole.WorkerRole.<>c__DisplayClass0.<<Run>b__2>d__0.MoveNext() in C:\Work\Own projects\EMAC\AzureCloudEmac\TcpListenerWorkerRole\WorkerRole.cs:line 60
I've already tried to configure an internal port in the ServiceDefinition.csdef file, but I get the same exception there.
As you can see, the client can connect to the service (the log shows the message: Client connected with the address) but when it tries to read the bytes from the stream, it throws the exception.
For me it seems like Azure is preventing the retrieval of the message. I've tried to disable the Firewall in the VM in Azure and the same continues happening.
I'm using Windows Azure SDK 2.3
Any help will be very very welcome!
Thanks in advance!
Javier
En caso de que la respuesta te sirva, porfavor, márcala como válida
Muchas gracias y suerte!
Javier Jiménez Roda
Blog: http://jimenezroda.wordpress.com

hi Javier,
I changed your code like this:
private AutoResetEvent connectionWaitHandle = new AutoResetEvent(false);
public override void Run()
TcpListener listener = null;
try
listener = new TcpListener(
RoleEnvironment.CurrentRoleInstance.InstanceEndpoints["Endpoint"].IPEndpoint);
listener.ExclusiveAddressUse = false;
listener.Start();
catch (SocketException se)
return;
while (true)
IAsyncResult result = listener.BeginAcceptTcpClient(HandleAsyncConnection, listener);
connectionWaitHandle.WaitOne();
The HandleAsync method is your "While (true)" code:
private void HandleAsyncConnection(IAsyncResult result)
TcpListener listener = (TcpListener)result.AsyncState;
TcpClient client = listener.EndAcceptTcpClient(result);
connectionWaitHandle.Set();
NetworkStream netStream = client.GetStream();
StreamReader reader = new StreamReader(netStream);
StreamWriter writer = new StreamWriter(netStream);
writer.AutoFlush = true;
string input = string.Empty;
try
char[] receivedChars = new char[client.ReceiveBufferSize];
// LoggingProvider.Logger.Info("Buffer size: " + client.ReceiveBufferSize);
int readedChars = reader.Read(receivedChars, 0, client.ReceiveBufferSize);
char[] validChars = new char[readedChars];
Array.ConstrainedCopy(receivedChars, 0, validChars, 0, readedChars);
input = new string(validChars);
// LoggingProvider.Logger.Info("This is what the host sent to you: " + input + ". Readed chars=" + readedChars);
try
string orderResultFormat = Encoding.ASCII.GetString(Encoding.ASCII.GetBytes("\xB")) + @"MSH|^~\&|Instrument|Laboratory|LIS|LIS Facility|20120427123212+0100||ORL^O34^ORL_O34| 11|P|2.5.1||||||UNICODE UTF-8|||LAB-28^IHE" + Environment.NewLine + "MSA|AA|10" + Environment.NewLine + @"PID|||patientId||""""||19700101|M" + Environment.NewLine + "SPM|1|sampleId&ROCHE||ORH^^HL70487|||||||P^^HL70369" + Environment.NewLine + "SAC|||sampleId" + Environment.NewLine + "ORC|OK|orderId|||SC||||20120427123212" + Encoding.ASCII.GetString(Encoding.ASCII.GetBytes("\x1c\x0d"));
writer.Write(orderResultFormat);
catch (Exception e)
// LoggingProvider.Logger.Exception("Unexpected exception while writting the response", e);
client.Close();
catch (Exception ex)
//LoggingProvider.Logger.Exception("Unexpected exception while Reading the request", ex);
client.Close();
Please try it. For this error message, I suggest you could refer to this thread (http://stackoverflow.com/questions/6173763/using-windows-azure-to-use-as-a-tcp-server
) and this post (http://stackoverflow.com/a/5420788).
Regards,
Will
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Can't see design view after changing connections file from localhost to a remote host & back again

I was using localhost to test files before changing the connections document over to a remote host, since I couldn't get dreamweaver to connect to the remote host, I changed back to localhot. My files are all .php files. This is a dynamic site. After I changed my connection back to my local host my design view no longer works. It's competly grey with 3 small icons at the top on the left. I can view in live view and I can view in the browser. But no longer in design view after being able to for 6 months. The 3 icons are a hard drive case, a document, and a link symbol . When I click in code view the design view turns grey when I click in design view it turns white. I am using wamp for the localhost, Windows XP home, Dreamweaver CS5. Can someone please tell me how to go back to design view. This happens with any & all files including non dynamic .html files. Also having a problem connecting to my remote host. using godaddy, and they have tried with me for 2 hours to connect, I just keep getting password is incorrect. Thank you for any help, Stacey

I would also recommend clearing the Site cache, which may help with the connection failure. To do so, choose Site > Advanced > Recreate Site Cache.
After doing so, be sure to go back into your Site Setup, and make sure the FTP address, user name, and password are all correct. (Click the Test button in there to verify.)
If that doesn't help with getting connected to your server, you might try an alternate FTP client (e.g. FileZilla) to just make sure you are entering the right connection information. It could be that GoDaddy is having some issue, or maybe you just mistyped something (I know I do this often when I type too fast).
As for the issue with Design View, try clearing the Dreamweaver cache. Instructions are here: http://forums.adobe.com/thread/494811
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I guess the problem come from me or I really need those contacts before he calls me for it. I'll try some method that I got from some responders on your support website. Do you have or can you recommand any software that can solve this problem?

I guess the problem come from me but I really need those contacts before he calls me for it. I'll try some method that I got from some responders on your support website. Do you have or can you recommand any software that can solve this problem?
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And as far as paying for phone support, here are a few tips:
If you call your carrier first and then they route you to Apple, you usually don't have to pay for phone support.
If you are talking to Apple and they ask you to pay a support fee, ask if you can get an exception this time. That usually works once, but they keep track of the times you've been granted such an exception.
If you still end up paying the support fee, that fee only applies if it's not a hardware related issue. In other words, if it can be fixed by just talking over the phone and following Apple's instructions, then the fee applies. But if your device is deemed to have a hardware failure that caused the issue, then the fee should not apply, and you can ask for it to be waived after the fact.
This forum is free, and almost all of the technical support articles the Apple tech advisors use are available on this website. Literally 99% of what they can do over the phone is just walking you through the publicly available support articles. In other words, you're paying the fee to have them do your research for you. It's like hiring a research consultant to go look stuff up in the public library so you don't have to. You're capable of doing it; you'd just rather pay someone to do it for you.
It's like Starbucks. You know how to make coffee. Everyone knows how to make coffee. And Starbucks coffee isn't any better than what you could make at home for far less. But you want the convenience. So you're really paying a convenience fee. Milk is more expensive at 7-Eleven than it is at the grocery store... because it's a convenience store.

We have created shared folder on multiple client machine in domain environment on different 2 OS like-XP,Vista, etc. from some day's When we facing problem when we are access from host name that shared folder is accessible but same time same computer when

Hello All,
we have created shared folder on multiple client machine in domain environment on different 2 OS like-XP,Vista, etc.
from some day's When we facing problem when we are access from host name that shared folder is accessible but same time same computer when we are trying to access the share folder with IP it asking for credentials i have type again and again
correct credential but unable to access that. If i re-share the folder then we are access it but when we are restarted the system then same problem is occurring.
I have checked IP,DNS,Gateway and more each & everything is well.
Pls suggest us.
Pankaj Kumar

Hi,
According to your description, my understanding is that the same shared folder can be accessed by name, but can’t be accessed be IP address and asks for credentials.
Please try to enable the option below on the device which has shared folder:
Besides, check the Advanced Shring settings of shared folder and confrim that if there is any limitation settings.
Best Regards,
Eve Wang
Please remember to mark the replies as answers if they help and unmark them if they provide no help. If you have feedback for TechNet Support, contact [email protected]

Remote host said: 550 5.2.1 Mail from 209.X.X.X refused: spa

Dear All,
My Friend is facing a problem he is not able to send mails from outside for e.g yahoo.com his mx is natted on the firewall to my exchange server.
Sender gets a bounce back mail stating below: -
<XXX>:
203.X.X.X does not like recipient.
Remote host said: 550 5.2.1 Mail from 209.X.X.X refused: spam site.
Giving up on 203.X.X.X.
Sorry but i dont know whether this forum should answer my querries which are actually of my friends.
But if you could it would be really helpful.
Thanks in advance.
Regards,
Ranjit

Hi Ranjit,
203.X.X.X does not like recipient.
Remote host said: 550 5.2.1 Mail from 209.X.X.X refused: spam site.
Giving up on 203.X.X.X.
implies that the recipient server is using antispam or blacklist software to refuse connections from certain IP addresses, including the 209.x.x.x address you cited.
I would consider using an RBL lookup tool such as
http://www.mxtoolbox.com/blacklists.aspx to check the 209.x.x.x address against different RBLs.
If it turns out that it is indeed listed, you would need to go to the respective listing site to see how to get off their list.
( I am not affiliated with mxtoolbox, they just have a convenient lookup tool on their site )

[SOLVED] issues sshing from some remote hosts

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