OpenSUSE Network :: Need To Alter Services Files If Ports Open In Firewall?

Jan 11, 2011

I have a question about /etc/services file. If I open ports in firewall, do I need to alter /etc/services file in order for certain apps to work?

kpasswd 464/tcp # kpasswd
kpasswd 464/udp # kpasswd
# Theodore Ts'o <tytso&MIT.EDU>
# 465 is illegal used by eMail Server
smtps 465/tcp # eMail Server
#urd 465/tcp # URL Rendesvous Directory for SSM
igmpv3lite 465/udp # IGMP over UDP for SSM
# Toerless Eckert <eckert&cisco.com>
digital-vrc 466/tcp # digital-vrc
digital-vrc 466/udp # digital-vrc

Above example shows if 465 tcp isn't altered, Postfix MTA fails to listen on 465 tcp port. What if there's a bigger span 3000:7000 TCP/UDP, is there a need to alter each line by hand?

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Apr 27, 2010

I have a couple of openSUSE 11.2 machines and each is directly connected to the Internet (they are not behind a router, firewall, etc). I want them to be able to communicate without any firewall restrictions, but keep the firewall rules for all other IP addresses. Is this possible? the software package I'm trying to use randomly chooses a port to use in the range of 32768-61000 and I don't feel comfortable having a port range that wide open on both machines.

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Jan 8, 2010

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Not shown: 991 closed ports
PORT STATE SERVICE
21/tcp open ftp

[code]....

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Jan 23, 2011

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Mar 6, 2011

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Sep 9, 2011

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Mind you none but the torrent port is forwarded in my router, I have no idea what any of these other ports are, or why they are even showing up.What the heck is going on? I dont think this is normal? Am I at any higher risk for attack?

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Jul 26, 2010

I am having trouble getting ports to open, on the router that the server is connected to it is set to DMZ, so everything passing through the router should go to the server right? but when I use a port checker none of the ports that I need to be open are. so my question is does ubuntu have a built in firewall that no one told me about? or something that would block me from having the ports open?

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Apr 1, 2010

I would like to ask today how to open up specific ports in Linux firewall (iptables). Recently I have changed the SSH port in server from 22 to 30022 by typing

Code:

# vi /etc/ssh/sshd_config

Code:

Port 30022
"/etc/ssh/sshd_config" 111L, 3027C

And then for the iptables configuration file:

Code:

# vi /etc/sysconfig/iptables

[code]....

How to configure the iptables properly so that my Windows PC can access the Linux with port 30022?

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Jul 18, 2011

I'd like to have a port open for some streaming radio stations. However, I don't know if they are UDP or TCP or what "direction" to have them set up (inbound or outbound). I also don't know if they should be set up for "host" or "dynamic". The stations I'm interested in are the 181.fm channels mostly (shoutcast stations). We have a Westell A90 type modem/router from Verizon.

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[code]....

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