Security :: Hosts.Allow Vs. SSH / Sending Message Connection Closed By Remote Host?

May 29, 2010

I have set up SSH and redirected the ssh server to listen on another port other than 22 for a bit of added security.

Now in hosts.deny I have:

ALL : ALL

In hosts.allow I have:

SSH : ip_address_of_client

I can no longer connect. I get the message: ssh_exchange_identification: Connection closed by remote host.

When I change hosts.allow to read:

ALL : ip_address_of_client

I can successfully connect the server.

However, I only want to allow SSH access in hosts.allow. What is the correct syntax?

I have tried and failed with each one of these:

SSH : ip_address:port_number
SSH2 : ipaddress
sshfwd-portnumber : ip_address_of_client

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CentOS 5 :: Ssh_exchange_identification: Connection Closed By Remote Host?

Feb 3, 2011

I am having trouble connecting to one of the VM's through ssh from base machine all of a sudden. All I get is an error : ssh_exchange_identification: Connection closed by remote host

--IP/Hostname crossed out --
[root@XX-XX02 ~]# ssh -v 1XX.1X.5X.1XX
OpenSSH_4.3p2, OpenSSL 0.9.8e-fips-rhel5 01 Jul 2008[code].....

Saying that the problem is only with ssh would be wrong as I can't seem to telnet or ftp it either. But I can ping it fine.When I try to login to that VM through console, it won't even let me login. The screen would flash for a sec and the same login prompt would reappear. I am not sure what exactly happened as it was working fine before.

OS version: CentOS release 5.5 (Final)
uname -a: Linux XX.XX 2.6.18-194.17.1.el5 #1 SMP Wed Sep 29 12:50:31 EDT 2010 x86_64 x86_64 x86_64 GNU/Linux

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[code]...

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Nov 5, 2010

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Quote:

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[code]....

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in this case this

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Code:
telnet
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Code:
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Code:

telnet f.mx.mail.yahoo.com 25
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Code:

telnet 192.168.71.1 25
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