Linux - NewbieThis Linux forum is for members that are new to Linux.
Just starting out and have a question?
If it is not in the man pages or the how-to's this is the place!
Welcome to LinuxQuestions.org, a friendly and active Linux Community.
You are currently viewing LQ as a guest. By joining our community you will have the ability to post topics, receive our newsletter, use the advanced search, subscribe to threads and access many other special features. Registration is quick, simple and absolutely free. Join our community today!
Note that registered members see fewer ads, and ContentLink is completely disabled once you log in.
If you have any problems with the registration process or your account login, please contact us. If you need to reset your password, click here.
Having a problem logging in? Please visit this page to clear all LQ-related cookies.
Introduction to Linux - A Hands on Guide
This guide was created as an overview of the Linux Operating System, geared toward new users as an exploration tour and getting started guide, with exercises at the end of each chapter.
For more advanced trainees it can be a desktop reference, and a collection of the base knowledge needed to proceed with system and network administration. This book contains many real life examples derived from the author's experience as a Linux system and network administrator, trainer and consultant. They hope these examples will help you to get a better understanding of the Linux system and that you feel encouraged to try out things on your own.
Click Here to receive this Complete Guide absolutely free.
I'm a linux noob, only know about enough to be dangerous...I am trying to get my Fedora Core firewall to work - I actually didn't know it wasn't until I started poking around in the GUI (I use both CLI and GUI) - so I used the CLI to try and start it and got the following:
[root@linuxbox ~]# service iptables start
Flushing firewall rules: [ OK ]
Setting chains to policy ACCEPT: filter [ OK ]
Unloading iptables modules: [ OK ]
Applying iptables firewall rules: iptables-restore v1.3.0: Line 18 seems to have a -t table option.
Error occurred at line: 18
Try `iptables-restore -h' or 'iptables-restore --help' for more information.
I'm not sure what they mean by line 18, but below is a copy of my config file:
: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 -i eth1 -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 220.127.116.11 -j ACCEPT
-A RH-Firewall-1-INPUT -p udp -m udp --dport 631 -j ACCEPT
-A RH-Firewall-1-INPUT -t nat -o ham0 -j MASQUERADE
-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 443 -j ACCEPT
-A RH-Firewall-1-INPUT -m state --state NEW -m tcp -p tcp --dport 21 -j ACCEPT
-A RH-Firewall-1-INPUT -m state --state NEW -m tcp -p tcp --dport 80 -j ACCEPT
-A RH-Firewall-1-INPUT -m state --state NEW -m tcp -p tcp --dport 22 -j ACCEPT
-A RH-Firewall-1-INPUT -m state --state NEW -m tcp -p tcp --dport 5800 -j ACCEPT
-A RH-Firewall-1-INPUT -m state --state NEW -m tcp -p tcp --dport 5900 -j ACCEPT
-A RH-Firewall-1-INPUT -m state --state NEW -m tcp -p tcp --dport 901 -j ACCEPT
-A RH-Firewall-1-INPUT -m state --state NEW -m tcp -p tcp --dport 5901 -j ACCEPT
-A RH-Firewall-1-INPUT -m state --state NEW -m tcp -p tcp --dport 5801 -j ACCEPT
-A RH-Firewall-1-INPUT -j REJECT --reject-with icmp-host-prohibited
If anyone can assist, just let me know what other info I may need to make this clear and I'll gladly provide it.
Sorry, forgive my ignorance, but I did a web search and found this:
sit is use to setup of point-to-point tunnel.
sit is an acronym for "simple internet transition" and is basically a device capable of encapsulating ipv6 in ipv4 datagrams.
Believe it or not I do understand that (well, a little), at least enough to know it's not an attack or compromise. And sorry to have gotten off-track, still waiting for an answer to why my linuxbox firewall won't start...
A good time back, before it was picked up by LogMeIn, I had attempted an install of Hamachi for linux on this particular machine. It never worked as planned, and I found another way to access my linux distro box from outside of my home network.
Another websearch found that Ham0 is an attempt by the Hamachi program to rename the eth port chosen (this is all assumption from what I've read) -
"So I put it on one of my CC gateway boxes (Home 3.2), but the virtual interface (ham0) seems to live outside the firewall. Kinda defeats the purpose of the whole Hamachi thing..
My simple question is ; How do I tell the CC box that the ham0 interface is a LAN interface, and that is lives inside the firewall, so I can use it for accessing Samba shares?"