I installed vsftpd in my Linux Server 12.04. Unfortunately my firewall closed port 20 and 21. So I used the commands found here and other commands to open my ports. But I tested with nmap and I saw ports didn't open.
What can I do? I need to open these ports.
I installed F17 the other day and I have everything working but, having problems with the Mail Server. The mail is flowing just fine but I can't access it from other computers on the network because I can't get port 993 for imap to open.
I'm trying to strengthen my server's security. I have a pretty standard CentOS VPS setup.
Below is a list of both TCP and UDP ports configured in my CSF firewall. These ports were open by default since I got my server. I have compiled as much information about these as I can find.
Some ports are obvious to me and I should keep them open (HTTP, POP, cPanel, etc).
Hello all,
Since I no longer have access to a spare machine to actually test this out on, I was hoping some kind soul might know the answer, or be willing to try it out for me. I'm trying to find out if the port scanner nmap can detect two different services which are sharing a single port.
I am facing is that to check the port number of the server is opened or not. DOnt know how to check it and also gone via various hp pdf's with no go. Like in cisco if we want to check whether the server is able to hear at some specific port then we run the command telnet ip port-number (enter). it will give us the prompt whether the window is open on that port number or not. Please respond back
I have an Apache server handling many VirtulServers and everything works fine. I don't know how it works internally but it does.
I recently tinkered a bit with nodejs, making experiments on this server, on the 8080 port. Now that I want to go on production, I have set up a domain name pointing to my server, but I want to avoid the ugly example.org:8080/ URL that I have at the moment.
Hi,
as this is my first post to the forum you should know that I am quite a newbee into Linux in general.
I'm running a CentOS Server with iptables to control ports. Today I scanned a server of a friend with nmap and results ended up with "All ports are filtered". I know there are something like 40 ports open, but they don't show up. So my question is, how can I do the same on my server. I don't want people to scan and see open ports on my server.
Thank you!
Hello folks,
I have an AIX server that is connected to a storage array via a Brocade switch using 4 ports from either side. The zoning is done such that there are 4 paths visible from the server to the storage.
My work involves frequent disabling or enabling the switch ports that are connected to the server.
Email this page
