I recently installed fedora core 5 on two systems. Is the system/administration/services GUI thing discussed in the documentation somewhere? (I can't seem to find anything except selinux.) I'd like to know a bit more about what the consequences of turning off some services might be. There is a terse description available in the tool, but it doesn't make it clear what will happen if I turn 'em off. For instance, I don't really know whether I need to "Listen and dispatch ACPI events from the kernel. (acpid)" Hate to just turn them all off & see what breaks. Also, I'm running nmap and lsof to try to figure out my open ports so I can close those I don't need and tell the firewall about the ones I do need. <div>nmap -sT -O mysystem ; </div>Starting Nmap 4.03 ( <a href="http://www.insecure.org/nmap/" target="_blank" onclick="return top.js.OpenExtLink(window,event,this)"> http://www.insecure.org/nmap/</a> ) at 2006-06-19 17:06 HST Interesting ports on lin... (The 1666 ports scanned but not shown below are in state: closed) PORT STATE SERVICE 22/tcp open ssh 25/tcp open smtp 111/tcp open rpcbind 587/tcp open submission 603/tcp open mnotes ??? What are these? How would I find out? 841/tcp open unknown ??? 868/tcp open unknown ??? 2049/tcp open nfs Device type: general purpose Running: Linux 2.4.X|2.5.X|2.6.X OS details: Linux 2.4.0 - 2.5.20, Linux 2.5.25 - 2.6.8 or Gentoo 1.2 Linux 2.4.19 rc1-rc7, Linux 2.6.3 - 2.6.10 Nmap finished: 1 IP address (1 host up) scanned in 2.290 seconds Starting Nmap 4.03 ( <a href="http://www.insecure.org/nmap/" target="_blank" onclick="return top.js.OpenExtLink(window,event,this)"> http://www.insecure.org/nmap/</a> ) at 2006-06-19 17:06 HST Interesting ports on <a href="http://ao.soest.hawaii.edu/" target="_blank" onclick="return top.js.OpenExtLink(window,event,this)">...</a>: (The 1668 ports scanned but not shown below are in state: closed) PORT STATE SERVICE 22/tcp open ssh 111/tcp open rpcbind 640/tcp open unknown ? 666/tcp open doom *****???????????????!!!!*********** I did not knowingly turn this on, don't know what service it is associated with. 773/tcp open submit 2049/tcp open nfs MAC Address: ... (Dell Computer) Device type: general purpose Running: Linux 2.4.X|2.5.X|2.6.X OS details: Linux 2.4.0 - 2.5.20, Linux 2.4.7 - 2.6.11 Nmap finished: 1 IP address (1 host up) scanned in 2.670 seconds lsof|grep LISTEN portmap 1720 rpc 4u IPv4 5412 TCP *:sunrpc (LISTEN) rpc.statd 1739 rpcuser 7u IPv4 5522 TCP *:36911 (LISTEN) ypbind 1864 root 5u IPv4 5771 TCP *:submit (LISTEN) sshd 2114 root 3u IPv6 6199 TCP *:ssh (LISTEN) rpc.rquot 2131 root 4u IPv4 6281 TCP *:entrust-sps (LISTEN) rpc.mount 2165 root 7u IPv4 6378 TCP *:mdqs (LISTEN) There's some info in /etc/services, but not enough for me to "get it." I hope this is the right forum for these questions. Thanks in advance for any answers! TDB