Solved

How to open port 1521 and port 1158 on redhat

Posted on 2011-09-05
11
20,042 Views
Last Modified: 2012-05-12
I want to know how to open port 1521 et 1158 (for oracle ...) on redhat linux.

I have used the procedure bellow but it doesn't seem to work


#vi /etc/sysconfig/iptables


add this line
# -A RH-Firewall-1-INPUT -m state –state NEW -m tcp -p tcp –dport 1158 -j ACCEPT
# -A RH-Firewall-1-INPUT -m state –state NEW -m tcp -p tcp –dport 1521 -j ACCEPT

Restart IPTABLES
# /etc/init.d/iptables restart

verify that the ports are open
#netstat | grep 1158
#netstat | grep 1521
0
Comment
Question by:cismoney
  • 5
  • 5
11 Comments
 
LVL 29

Expert Comment

by:fosiul01
ID: 36483614
are there any services running on port 1158 and 1521 ??

netstat output will only show if somethign is runnign on those port
0
 

Author Comment

by:cismoney
ID: 36483644
yes some oracle services are supposed to run on these ports. the dba told me to open these sports
0
 
LVL 29

Expert Comment

by:fosiul01
ID: 36483647
telnet you can telnet to those port

telnet localhost   1158

or

telnet ip-of-server 1158

see if you can connect or not
0
 

Author Comment

by:cismoney
ID: 36483682
can't connect via telnet

here is the output

# telnet localhost 1158
Trying 127.0.0.1...
Connected to localhost.localdomain (127.0.0.1).
Escape character is '^]'.

Open in new window

0
 
LVL 29

Expert Comment

by:fosiul01
ID: 36483688
the output shows its connected   ::: Escape character is '^]'.


here you trying from localhost

could you try from another computer in your network ??


from different computer in your network  (xp or another linux)

telnet ip-of-server 1158

0
Enterprise Mobility and BYOD For Dummies

Like “For Dummies” books, you can read this in whatever order you choose and learn about mobility and BYOD; and how to put a competitive mobile infrastructure in place. Developed for SMBs and large enterprises alike, you will find helpful use cases, planning, and implementation.

 

Author Comment

by:cismoney
ID: 36483735
the result is the same
0
 
LVL 29

Expert Comment

by:fosiul01
ID: 36483754
if you can telnet to  1158 from out side of the server
which mean, the port is opened


Now if you cant telnet 1521 from out side of server
which means , the services is not enabled on that port

or you have not open that port from firewall  

but by looking at yoru question, its lik port 1521 (tcp ) is open

do this

lsof -iTCP | grep 1521

lsof -iTCP | grep 1558

see what runnign on those port




0
 

Author Comment

by:cismoney
ID: 36483783
i just typed these two command and there is no output
0
 
LVL 29

Expert Comment

by:fosiul01
ID: 36483793

sorry its 1158  not 1558



lsof -iTCP | grep 1158
0
 
LVL 77

Accepted Solution

by:
arnold earned 500 total points
ID: 36483853
As fosiul01 pointed
lsof -i:<portnumber>
if there is a process that is bound to this port, you will get the listing.

The procedure you followed depends on where you placed those two lines.
Presumably you do not have an explicit deny after which you add the referenced lines.

Try this:
iptables -L RH-Firewall-1-INPUT --line-numbers

iptables -I RH-Firewall-1-INPUT <x> -p tcp –dport 1158 -j ACCEPT
iptables -I RH-Firewall-1-INPUT <x> -p tcp –dport 1121 -j ACCEPT

(running the above commands makes the changes effective immediately but a restart of the iptables or the system will revert back since these changes are unsaved until you run /etc/init.d/iptables save)

Where <x> is replaced with a row number (depending on how many lines in your existing chain, 4,5 or 6 should be fine to use.  Make sure you do not have a Deny/Reject rule after which you are adding these entries.

Double check that you did not alter the ports
http://download.oracle.com/docs/cd/B19306_01/install.102/b15660/app_port.htm

netstat -an | egrep '(1158|1121)'

Fosiul01 pointed out that the connection is made, but the process might involve encryption which might explain why you are not seing anything after the connection is established.
0
 

Author Comment

by:cismoney
ID: 36484763
it worked !!! thanx. i just found out  this command
 #system-config-securitylevel

Open in new window



its very easy to use, it display the firewall graphical interface with xterm
0

Featured Post

Efficient way to get backups off site to Azure

This user guide provides instructions on how to deploy and configure both a StoneFly Scale Out NAS Enterprise Cloud Drive virtual machine and Veeam Cloud Connect in the Microsoft Azure Cloud.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

Title # Comments Views Activity
Can't get /etc/resolv.conf to configure after reboot 8 71
a free alternative to cpanel? 1 58
Codiing Non-Existent Links 4 65
Linux  Script File Attributes 5 51
Why Shell Scripting? Shell scripting is a powerful method of accessing UNIX systems and it is very flexible. Shell scripts are required when we want to execute a sequence of commands in Unix flavored operating systems. “Shell” is the command line i…
SSL is a very common protocol used these days when browsing the web.  The purpose is to provide security to communication, but how does it do it?  There are several pieces at work that have to be setup before SSL will even work and it requires both …
Learn several ways to interact with files and get file information from the bash shell. ls lists the contents of a directory: Using the -a flag displays hidden files: Using the -l flag formats the output in a long list: The file command gives us mor…
Learn how to navigate the file tree with the shell. Use pwd to print the current working directory: Use ls to list a directory's contents: Use cd to change to a new directory: Use wildcards instead of typing out long directory names: Use ../ to move…

914 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

12 Experts available now in Live!

Get 1:1 Help Now