Adding more info, next future SAMBA version 4.7 will increase the SMB "client max protocol" to SMB3_11 to be able to connect to servers with SMB1 disabled, "client min protocol" is still SMB1.
######
The default for "client max protocol" has changed to "SMB3_11",
which means that smbclient (and related commands) will work against
servers without SMB1 support.
It's possible to use the '-m/--max-protocol' option to overwrite
the "client max protocol" option temporary.
Note that the '-e/--encrypt' option also works with most SMB3 servers
(e.g. Windows >= 2012 and Samba >= 4.0.0), so the SMB1 unix extensions
are not required for encryption.
The change to SMB3_11 as default also means smbclient no longer
negotiates SMB1 unix extensions by default, when talking to a Samba server with
"unix extensions = yes". As a result some commands are not available, e.g.
posix_encrypt, posix_open, posix_mkdir, posix_rmdir, posix_unlink, posix_whoami,
getfacl and symlink. Using "-mNT1" reenabled them, if the server supports SMB1.
Note the default ("CORE") for "client min protocol" hasn't changed,
so it's still possible to connect to SMB1-only servers by default.
######
Adding more info, next future SAMBA version 4.7 will increase the SMB "client max protocol" to SMB3_11 to be able to connect to servers with SMB1 disabled, "client min protocol" is still SMB1.
https:/ /download. samba.org/ pub/samba/ rc/samba- 4.7.0rc1. WHATSNEW. txt /wiki.samba. org/index. php/Release_ Planning_ for_Samba_ 4.7 /wiki.samba. org/index. php/Samba_ 4.7_Features_ added/changed
https:/
https:/
######
The default for "client max protocol" has changed to "SMB3_11",
which means that smbclient (and related commands) will work against
servers without SMB1 support.
It's possible to use the '-m/--max-protocol' option to overwrite
the "client max protocol" option temporary.
Note that the '-e/--encrypt' option also works with most SMB3 servers
(e.g. Windows >= 2012 and Samba >= 4.0.0), so the SMB1 unix extensions
are not required for encryption.
The change to SMB3_11 as default also means smbclient no longer
negotiates SMB1 unix extensions by default, when talking to a Samba server with
"unix extensions = yes". As a result some commands are not available, e.g.
posix_encrypt, posix_open, posix_mkdir, posix_rmdir, posix_unlink, posix_whoami,
getfacl and symlink. Using "-mNT1" reenabled them, if the server supports SMB1.
Note the default ("CORE") for "client min protocol" hasn't changed,
so it's still possible to connect to SMB1-only servers by default.
######