[Samba] Blocking internet access to Samba

[Brian Johnson]

My samba.smbd log shows multiple entries such as:

[2002/10/30 10:30:04, 0] lib/access.c:check_access(323)
  Denied connection from  (211.163.100.141)

They show up about every five minutes and are from a few different IP addresses

I thought that my iptables configuration would block connection attempts from the
internet - is that what these are?

My LAN ip range is 192.168.0.x