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!
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).
Introduction
There are situations when you want to find a web server, or the CUPS server, or any other server in a local network, but you do not know the IP of that computer.
You can go to computer itself and check its IP, or you can check the DHCP logs, or you can ask the Network Admin, but you can also use nmap
Using nmap to find open ports
First, be sure to use nmap only in your own network, d
Hi!!!
I have a reports server on unix that needs an X-server for running. I've installed a ubuntu on an old pc to run the x-server.
I set the display variable on the server pointing to the ubuntu box, but cant make the display work. (i use xclock for testing).
I can ping from the server to the ubuntu machine, but I have a firewall between the two machines.
I'm trying to understand what port numbers i can use to access my application both through the web server (IBM Http Server) and directly to the app server (IBM Websphere v6.1).
What ports can i use to bypass IHS and hit server directly using HTTP and HTTPS?
What ports can i use to pass through IHS server using HTTP and HTTPS?
What are the default ports and are there other ports i should be aware
I'm trying to connect to my FTP server from my external IP address on Comcast Business.
On the gateway I've set up port-forwarding on ports 20-21 to my server. Additionally I've forwarded ports 7000-8000 to my server for use in passive mode.
How do I enable NFS mounts/shares with iptables with DROP policy?
NFS uses dynamically assigned ports, thus it is difficult to use with firewalls.
I have an NFS server and a few clients.
If I've got a typical home router -- say a Net Gear -- which has certain ports forwarded to a internal server, is there a way to tweak the router to let me access that internal server using the external IP address from within the same network?
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.