How do I configure iptables firewall under CentOS / Fedora / RHEL / Redhat Linux to allow access to the Samba server? How do I open TCP ports # 137, 138, 139 and 445 under Linux so that all Microsoft Windows machine can access files and printer on a Linux host?
How do I open a network port range in the firewall under OpenSuse / Suse Enterprise Linux server? How do open a port range in my firewall, such as the TCP ports 30000 to 35000?
Q. My Oracle XE installation was working fine, but today I’m getting an error – which read as follows under Ubuntu Linux : ORA-12154: TNS:could not resolve the connect identifier specified How do I fix this problem without reinstalling Oracle?