similar to: Open extra ports on firewall?

Hi, I'm using the generic system-config-securitylevel-tui program on a remote server to configure my firewall. So far it's been fairly decent, allowing me to open up ports and whatnot. But I want to start blocking a couple of outgoing ports on my machine. I want to lock it down so the only traffic going in our out of my machine is stuff that I specify. Is there a way to do this

I'm trying to NFS-mount a CentOS directory on my Fedora laptop, but I find I can only do this is I turn off the firewall on the CentOS server. If instead I go to system-config-securitylevel-tui on the server, and allow NFS4, this does not do the trick. Nor does allowing port 2049. What do I need to allow? [I should say that the CentOS server is remote, and difficult to access directly; that

Hello everyone, I am setting up a new system for use as a testing/demo/trial-and-error system. I have installed CentOS 4.4 on it. There is not an X-environment, so I will need to fix this from the command line (via ssh access). I am trying to do an nfs export from this box to another on my internal home network. I have figured out that it is a firewall issue on the CentOS box (I turn off the

In following up on the rsh "problem" I was having earlier, I decided to try out the suggestion Felipe sent about using system-config-securitylevel-tui to open up ports 513 and 514, but that doesn't seem to do the job, either. # iptables -L Chain INPUT (policy ACCEPT) target prot opt source destination RH-Firewall-1-INPUT all -- anywhere anywhere

Hi, With the release of 5.2 "yum update" seems to be upgrading our computers from CentOS 5.1 to CentOS 5.2. I note from release notes for 5.2 that you are only supposed to get 5.2 if you type in "yum upgrade". On two seperate machines entering "yum update" has resulted in yum geting repo information for packages with versions that only exist in the base

Hi All, Hi All, MySQL 5.0.77 on CentOS 5.4 MySQL is running, my Wordpress stuff is working, but I cannot connect to the server from my house. This server is in my house, however, but on a public IP, behind a firewall, etc. I checked my hardware firewall (a dedicated UnTangle system) and that is successfully allowing the passage. I know this because the firewall shows: 2009-12-22 6:29:41 am

Hi list. This is my first post here. Super newbie. I will try not to ask too many questions, but searching is hard when you don't even know where to begin. Hopefully someone can point me in the right direction. I have just installed CentOS 4.2. I selected to have a firewall in the graphic installer, and I opened ports 22 and 80. Fine so far. SSH and HTTP both work. But now that

Hello, When i did the basic CentOS install i selected incoming ssh, ftp, www, and smtp in the configuration dialog. Now my needs have changed and i'd like to add to those rules with samba, this box runs it, and bacula the client. I was wondering a howto on what to put, i know the ports i need, or a web configuration util? Thanks. Dave.

Hi, I've been contacted by a local training center specialized in Oracle databases, to train a group of four administrators to use Linux. They're supposed to use Oracle Linux (more exactly "OL5"), which I understand is some specialized version of Red Hat Enterprise Linux. I'm reasonably proficient with CentOS. I've been using it exclusively on desktops and servers

iptables -I INPUT -s 0.0.0.0/0 -p tcp --dport 5901 -j ACCEPT I'm going strictly off memoy here so you may need to man iptables. :) hadi motamedi <motamedi24 at gmail.com> wrote: >Dear All >To open a port , I know that I need to go to "System -> Administration -> >Security Level and Firewall" -> Other ports and then I can open port-5901 as >tcp

Hey every one, Over the past week I have been exploring puppet and had been ignoring an oddity in its output that Luke helped me figure out today. It all started with trying to configure puppet to configure iptables using redhats utility system-config-securitylevel-tui on rhel4. I was able to get it up and running using the following configuration: node default{ firewall {rhel4:

An embedded message was scrubbed... From: Niki Kovacs <contact at kikinovak.net> Subject: Re: [CentOS] iptables Date: Fri, 23 Apr 2010 21:01:29 +0200 Size: 1400 URL: <http://lists.centos.org/pipermail/centos/attachments/20100423/64275bbe/attachment-0002.eml>

Hello CentOS, I'm curious... there seems to be a couple of default firewall rules that I'm not familiar with in the CentOS 4.0 # 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

I responded to a post in the Dell poweredge mailing list earlier today. My answer was off the top of my head, with a bit of experimentation. The content may be useful in the Cenyos context as well to admin's looking to strip the size of an install to the bare bones. Comment welcomed. Can anyone see any packages which I have missed? -- Russ Herrold ---------- Forwarded message

Hi Ignacio, apology for my English... my name is George Ginis... what you mean running/accessible via firewall and system-config-securitylevel? in XP or CentOS? and what is this? the PuTTY I have in XP or in CentOS? thank for your answer... By default CentOS doesn't have ftp, telnet, nor rlogin services running/accessible via firewall. Use an ssh client such as PuTTY. And don't forget

Hi, just to avoid re-inventing the wheel, is there any document that can help me reduce even further a "minimum" installation of Centos 4.4 (BTW can you say 600mb is minimum)? I am in the process of creating a small Centos-4.4-based Asterisk box and I need to boot it from a CF card. Deleting useless packages will help me do what i want. Example: even a minimum install of Centos 4.4 (or

Hi, just to avoid re-inventing the wheel, is there any document that can help me reduce even further a "minimum" installation of Centos 4.4 (BTW can you say 600mb is minimum)? I am in the process of creating a small Centos-4.4-based Asterisk box and I need to boot it from a CF card. Deleting useless packages will help me do what i want. Example: even a minimum install of Centos 4.4 (or

Hi, I'm planning to use CentOS 6.x on a handful of LAN servers. So far I've been using Slackware64 14.0 and 14.1 for the job. I wonder what's the orthodox/recommended way of configuring and iptables firewall with CentOS. I understand there's the system-config-securitylevel-tui NCurses interface which allows defining a basic set of rules. But what about the handful of more

I run CentOS at home, not just at work... Anyway, I've got a friend in Chicago who recently mentioned that they'd like to do videocalling. Now, I've heard of skype, but a quick google says there's some problems on Linux. I also see ekiga, and aMSN. Anyone here run such a beast, and have any recommendations or comments? Obviously, must work on CentOS, not Ubuntu, or Fedora, or

Hi, When browsing the (excellent) deployment guide I found the following broken links: http://www.centos.org/docs/5/html/5.2/Deployment_Guide/s2-basic-firewall-securitylevel-enable.html ('Next' link from http://www.centos.org/docs/5/html/5.2/Deployment_Guide/s2-basic-firewall-securitylevel.html) http://www.centos.org/docs/5/html/5.2/Deployment_Guide/s2-iptables-options-commands.html