Some ports are available, others not but iptables are empty

[Passero]

On my laptop i have installed linux centos5. It is working fine and evrything works but their is one issue i can't find the solution for...

I have installed some servers:
oracle DB running on 1521 with webinterface running on 81
oracle weblogic server running on 7001
apache running on 80

The strange thing is that i only am able to connect to servers bound to port 80 and 8080.

For examples localhost works fine but localhost:81 gets a connection refused.
I also tried to change the port from 81 to 8080 and then it works.

When i do a iptables -L nothing is their so no firewall rules.

I realy don't have a clue were to look... It seems that their is somewhere still a firewall managing my network but i can't find it...
The default port of WLS is 7001 when you install it and that does not work but when i change it to 8080 it does work...

I have installed NetworkManager to manage my wireless connection. I have no wired connection.

i also tried without the NetworkManager service and used the normal network service but that didn't help so perhaps NetworkManager is not the problem...

[ImCrunchy]

I would guess that SELinux is affecting what has access to what ports. You can check what ports are permitted access by what services with

# semanage port -l

To allow Apache to list on tcp to port 81 you could try

#semanage port -a -t http_port _t  -p tcp 81

SELinux is set to Enforcing by default. You should read up and adjust your policies accordingly.
Good luck.

[Passero]

SELinux is disabled on my laptop

[root@localhost ~]# sestatus
SELinux status:                 disabled

[Passero]

I think i just broke my linux...

I enabled selinux because it was disabled and now i nothing sarts anymore.
For every service i get an error "can not find shared library...."
I can't even login to my gnome session. I have to use a failsafe session..

[ImCrunchy]

Have you tried booting into single user mode and disabling SeLinux from there?