I've spent the last 3 hours (it seems like) going over postings in the comp.protocols.smb newsgroup trying to find a solution for this problem. It seems that a lot of folks have had the issue, but none of the posts I looked at had any useful resolution. Here's the error: 28968: protocol negotiation failed SMB connection failed I'm running RHEL 4 Workstation with Samba Version 3.0.10-1.4E. I'm running as a client, not a server, and am attempting to mount a share from a Windows server. There is much networking mumbo-jumbo in the way, but I don't think any of it applies, since I can telnet to port 139 on the server in question and telnet connects nicely. But any Samba utility I use fails with the above error, never getting to the point where it asks for a password. The main command I need to run is: smbmount //.../share /data/mount -o username=me It should prompt me for my password. The domain is specified correctly in the smb.conf file. In fact, I can use 'smbmount' to access another system in the company, without any problem. Any suggestions and assistance is much appreciated. *Please* respond to me directly as I'm not subscribed to the list. Thanks in advance. Bob