When you use the SIGNON command to connect to a UNIX machine that is configured with the Secure Shell (SSH) protocol, the command window indicates that the tunnel with the SSH or PuTTY client was created successfully. However, the connection actually fails, as indicated by the one of the following error messages in the SAS^® log:

This problem is typically seen when the remote UNIX machine is not configured to enable TCP port forwarding. To determine whether this is the problem, follow these steps to invoke and examine the PuTTY/SSH command event log:

1. Right-click the title bar of the PuTTY/SSH command window.
2. From the menu, select Event Log.
3. Look at the event log. If it contains the following error, the remote UNIX machine is not configured to enable TCP port forwarding:
   
   Forwarded connection refused by peer: Administratively prohibited
4. In this case, ask your UNIX system administrator to configure the remote host using the following instructions.

Configuring Port Forwarding on the Remote Host: Instructions for UNIX System Administrators

Configure port forwarding on the UNIX remote host by editing the /etc/sshd.config file. Add the following parameter to the file:

AllowTcpForwarding yes

 

Operating System and Release Information

Product Family	Product	System	SAS Release
			Reported	Fixed*
SAS System	SAS/CONNECT	Solaris for x64	9.2 TS2M3
		OpenVMS on HP Integrity	9.2 TS2M3
		Linux for x64	9.2 TS2M3
		Linux	9.2 TS2M3
		HP-UX IPF	9.2 TS2M3
		64-bit Enabled Solaris	9.2 TS2M3
		64-bit Enabled HP-UX	9.2 TS2M3
		64-bit Enabled AIX	9.2 TS2M3

* For software releases that are not yet generally available, the Fixed Release is the software release in which the problem is planned to be fixed.

---

When you use the SIGNON command to connect to a UNIX machine that is configured with the SSH protocol, an error occurs: Cannot read TCP socket, system message is " ".

Type:	Problem Note
Priority:	high

Date Modified:	2011-04-29 12:32:37
Date Created:	2011-02-17 15:58:47