Opening port on machine

Hi,

I'm using Red Hat Enterprise Linux ES release 4 (Nahant Update 3) and
have used the system-config-securitylevel utility to open port 5505 on
the firewall. The iptables config now looks like this:


# Firewall configuration written by system-config-securitylevel
# Manual customization of this file is not recommended.
*filter
:INPUT ACCEPT [0:0]
:FORWARD ACCEPT [0:0]
:OUTPUT ACCEPT [0:0]
:RH-Firewall-1-INPUT - [0:0]
-A INPUT -j RH-Firewall-1-INPUT
-A FORWARD -j RH-Firewall-1-INPUT
-A RH-Firewall-1-INPUT -i lo -j ACCEPT
-A RH-Firewall-1-INPUT -i eth0 -j ACCEPT
-A RH-Firewall-1-INPUT -p icmp --icmp-type any -j ACCEPT
-A RH-Firewall-1-INPUT -p 50 -j ACCEPT
-A RH-Firewall-1-INPUT -p 51 -j ACCEPT
-A RH-Firewall-1-INPUT -p udp --dport 5353 -d 224.0.0.251 -j ACCEPT
-A RH-Firewall-1-INPUT -p udp -m udp --dport 631 -j ACCEPT
-A RH-Firewall-1-INPUT -m state --state ESTABLISHED,RELATED -j ACCEPT
-A RH-Firewall-1-INPUT -m state --state NEW -m tcp -p tcp --dport 5505
-j ACCEPT
-A RH-Firewall-1-INPUT -j REJECT --reject-with icmp-host-prohibited
COMMIT

I restarted iptables successfully and would now expect to be able to
telnet to that port on the machine locally as I'm expecting the port to
have been opened and ready listening, however, I get connection
refused.

# telnet localhost 5505
Trying 127.0.0.1...
telnet: connect to address 127.0.0.1: Connection refused
telnet: Unable to connect to remote host: Connection refused

Can anyone help please as this seems to be a trivial problem that
should be easy to sort out but I've been racking my brains for a while
trying to get this to work.

Many thx.

.

Relevant Pages

  • Firewall Rules Summary
    ... Subject: Firewall Rules Summary ... This script is provided "as is" with no implied warranty. ... this came from various howtos and articles on iptables that existed around ... #specific port denies>1024 tcp ...
    (Focus-Linux)
  • Re: How to maximize security with iptables when http service opening?
    ... You're running firewall ... single host running httpd and iptables. ... If you want to run www server then you need to open port 80 ... Of course, attacker still can get it, ...
    (comp.os.linux.security)
  • Re: Telnet is not working with iptables
    ... You are appending to the existing rules. ... above your rule that is causing denial of the the specific port. ... rule list with iptables -nL command. ... Whenever i tried to telnet it generates the following error ...
    (RedHat)
  • Re: Telnet is not working with iptables
    ... I enabled SSH port by using ... Telnet is not working with iptables ...
    (RedHat)
  • Re: Webmin & system-config-securitylevel
    ... > I have a server running FC2, iptables were setup using ... > service unless I expressly opened that port. ... I did this thru webmin using the firewall config tool under ... <snip config files> ...
    (alt.os.linux.redhat)