I have ISPConfig installed on a Fedora Core 4 box. ISPConfig is working perfectly. However, I also want to use my computer as a samba file server. I need to open up a few firewall ports to do this. I used the ISPConfig control panel and tried to open port 137. I restarted the firewall using the control panel. Before and after I did this, I ran nmap and got the following output: Starting nmap 3.81 ( http://www.insecure.org/nmap/ ) at 2005-08-05 13:54 EDT Interesting ports on ddnsserver1.hopto.org (192.168.0.10): (The 1644 ports scanned but not shown below are in state: closed) PORT STATE SERVICE 21/tcp open ftp 22/tcp open ssh 25/tcp open smtp 53/tcp open domain 80/tcp open http 81/tcp open hosts2-ns 110/tcp open pop3 111/tcp open rpcbind 139/tcp open netbios-ssn 143/tcp open imap 443/tcp open https 445/tcp open microsoft-ds 734/tcp open unknown 761/tcp open kpasswd 993/tcp open imaps 995/tcp open pop3s 2049/tcp open nfs 3306/tcp open mysql 32770/tcp open sometimes-rpc3 Nmap finished: 1 IP address (1 host up) scanned in 0.253 seconds As the listing shows, port 137 is not open. How can I open up port 137?