I am managing a server and just learning how to do everything. It is a linux server running WHM/Cpanel. I need web scripts on this server to be able to connect to external SMTP servers. Therefore I need to open up port 25 (if it is not already).
How do I open ports on my server? Hopefully by using WHM/Cpanel (I am not too familiar with using the command line).
I have a VPS running CentOS 4.4 which I have just been securing. It is running apache on port 80, BIND on port 53 and ssh on an atypical port. However, when I do a portscan with nmap I find that port 5190/tcp is open. There is no daemon listening on the port (I think it is for AIM?) and in any case iptables should refuse any connection on this port. Should I worry about this or is the port pretty safe to leave open?
Due to some circumstances out of my control, I've had to move from postfix to qmail. In postfix, I simply edited master.cf and added a new line to open it up on port 26 and 25 at the same time. In qmail it's not that easy. I followed the instructions at http://www.daniweb.com/forums/post256079-2.html and it worked, but it takes about 15 seconds for thunderbird send the mail (it sits there saying 'connected to mail.domain.com)
Is there a better way of opening qmail on 26 or forwarding requests for 26 to 25?
Our new data center provided us with a Cisco ASA5510 firewall. We're setting up all new servers and will begin migrating all of our domains from our current co-lo to the new place.
At the old co-lo, they provided us a very basic BSD based router, and our servers all had external public facing IPs on them. Firewalling was handled at the server (Windows Firewall or Linux IPtables).
The new place is NAT'ing us, so our servers all have a 192.168.10.x address inside, and they map the external address for us through to the inside.
By default, they are locking everything down. I had to ask them to open ssh so I could remote into my CentOS box last night.
I'm not a network guru-- what ports are going to NEED to be opened so I can give them a list? This is a standard PLESK hosting server so http (80), https, ssh, ftp, pop3, smtp, what else? Anyone have a list?
How to increase the Open Files limits descriptor in Apache. In the earlier version of Cpanel, we had an option of Raise FD Size Limit to 16384, but the option no longer appear while rebuilding Apache. What is the way to do it and make the change permanent?
Currently I am using Linux + cPAnel and using the port 25 for email sevrer. Currently we facing 1 problem is, some user's ISP is not support port. May I know how can I add additional port into server and allow users to send mail by different port?
I have an office internal website and I opened a port in the gateway of my office (7080) to this website (server )'s 80 port. That makes this website open to public as office has static IP. And then when I view the site from home . it's fine. But when I tried to login, the site is using a pop-up, I guess it's http authentciation, login, I was redirected to a url without my port number any more, that stops my access to the site as obviously I would.
Here's my story: The landlord provides the internet for the house and it goes through a server which has squid installed. Squid in turn seems to block the internal port (or whatever the exact term for that is) for phpmyadmin or webmail in cpanel so I cannot access them.
At my reseller account at Hostgator they said they redirected that port to port80 via mod rewrite and that now works for me. I wonder how I would do the same thing on a dedicated server. I can't see what Hostgator did since it's happening out of my sight somewhere. Otherwise I would just replicate that on my box.