How do I unblock IP addresses on my linux web server using mac Terminal?

I need to occasionally unblock IP addresses on my Linux web server using Mac Terminal app where can I find the commands to do so?
KoolVAsked:
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KoolVConnect With a Mentor Author Commented:
I have found a guy who will provide me the support to do this as it is looking a bit too difficult I will get him to explain to me how to do this and will post the answers back here soon.
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chqshaitanCommented:
what is actually blocking the ips? is the built in firewall (iptables) or something else?
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KoolVAuthor Commented:
Yes I believe so I have not accessed the server with mac terminal before but need to learn how to
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dacaseyCommented:
SSH ot Telnet are the two easy ways.  Start the terminal app on your mac and try to either ssh of telnet to your Linux machine.

eg.

ssh 192.168.0.2
- or -
telnet 192.168.0.2

I'm assuming in this example that your Linux machine is 192.168.0.2
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chqshaitanCommented:
ah, i misunderstood what you were asking. I thought you were asking what commands on the linux server you need to run, not the command on the mac to connect to the linux server.
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KoolVAuthor Commented:
yes I need to know what commands I need to enter in Mac terminal to access the IP blocking tables or that area to view what IP addresses have been blocked and need to know how to unblock them
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KoolVAuthor Commented:
The Linux web server is in a data centre and I have the IP of it etc just need to know where to find Linux commands
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dacaseyCommented:
Hi KooIV,

You need to unblock IPs on your linux web server so you need to access it some way.  

Does your server support telnet ssh or both?

FIt doesn't matter if your server is in a data center or in your basement, 1st step is to access your server.  So can you open your mac terminal, we are going to use it to take over your server.

try ssh [your server ip]

you should be asked for a login and password.
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KoolVAuthor Commented:
I tried that and got this

ssh: connect to host 119.252.19.49 port 22: Operation timed out
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asiduConnect With a Mentor Commented:
Did you block any IPs at your machine initially which is at the data centre?
Have you accessed your machine via SSH from any other machines?

To access to your machine, first the SSH server or telnet service must be running at the server. SSH access would be preferred as information xfer will be encrypted.

Also you will have to know the details of the IPtables or any other firewall that you are running at your server.

On your mac, you should have a  ssh client software installed on your machine to access the data center. You can get a trial software from http://www.vandyke.com/products/beta/securecrt/mac_osx.html 

Try to access your data center once the client program has been installed on your machine.

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asiduCommented:
Refer to your post 34153507.

Are you able to do a SSH at the machine locally ?
If yes ...then it clearly points to a network issue, firewall issue.
If no you have to make sure the SSH server is running on the
server.
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KoolVAuthor Commented:
I found a guy who fixed it all fro me thanks for your efforts though
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