General Linux Discussion

[MelodyMan]

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Question:

This linux firewall ba, is it similar to software firewall like sygate or norton firewall? Or like the CISCO firewall jud siya ug features. I've been running Linux pero I disabled the firewall and I havent tried setting it up.

Thanks

[mannyamador]

This linux firewall ba, is it similar to software firewall like sygate or norton firewall? Or like the CISCO firewall jud siya ug features.

If I'm not mistaken, the OS on Cisco boxes is Linux!

In any case, you should ALWAYS enable the Linux firewall. It is UNLIKE Windows firewall software since the Linux firewall is part of the kernel itself and ot a regular application. When you get a standard Linux kernel with your distribution, you get a firewall. You just have to switch it on.

If you're running Red Hat 9, issue the command:

  $ redhat-config-securitylevel

That should bring up an ASCII-based (ncurses) interface where you can set up the firewall. Just put it on high if you're protecting a desktop PC.

[buyer_any]

Several network firewall and router standalone products, including several from Linksys/ cisco, use Linux internally, using its advanced firewalling and routing capabilities. hindi lang napapansin dahil web based ang configuration niya

[higanstolsdawen]

does it mean that the built-in firewall in linux is comparable to those hardware based firewall offered by linksys, cisco, 3com?

[buyer_any]

firewall linux/windows or hardware based are same functionality, ang tamang question dyan how u will customize to secure your network.

[MelodyMan]

firewall linux/windows or hardware based are same functionality, ang tamang question dyan how u will customize to secure your network.

all their functions are of course to protect but other functions or advanced functions/features is another question. That is my point. Customization applies to different network setup and environment. For example, you dont have to customize if you use the default setup esp for home PCs. For example, you dont really have to customize APPs like ZA and Sygate(etc).

>>does it mean that the built-in firewall in linux is comparable to those hardware based firewall offered by linksys, cisco, 3com?

This question should have a direct answer. A lot of people know about the OS of a hardware firewall. A guy using a firewall has network knowledge na. And he would be completely stupid if he thinks it's MAC, MS DOS or Windows XP.hehe. It's mostly written sa manual and you can actually find it sa most forums.

About comparing it with the hardware firewalls, that includes na other programmed modules for the firmware. Linux is simply the OS running behind the firewall. The chips and the logic behind those codes are what we would like to know. What's the point of manufacturing these hardwares if you can simply tell to install and configure Linux firewall? Well to be honest, I'm using a software firewall and a PC(with wingate) to share the internet connection. Wingate has built-in firewall but I'm not satisfied with it so I installed another free firewall called Outpost.

And for our web server, Linux(CentOS) firewall is running. My workstation has a Linux installed but disabled lng ang firewall coz I'm already behind the network.

Thanks.

[javapenguin]

Has anyone of you has experience using remote X server? I still have a 486 here then I tested remote X using RH9 as server and it worked. I'm upgrading my server now to CentOS 4.3 and Suse 10. I cannot seem to make it work. Do I need to set some config file under X?

[BadDudes]

you mean LTSP? ... or just plain X on ssh?

[buyer_any]

The chips and the logic behind those codes are what we would like to know. What's the point of manufacturing these hardwares if you can simply tell to install and configure Linux firewall? Well to be honest, I'm using a software firewall and a PC(with wingate) to share the internet connection. Wingate has built-in firewall but I'm not satisfied with it so I installed another free firewall called Outpost.

Thanks.

The Linksys kernel is a customized 2.4.20 source tree modified by Broadcom. Broadcom is a leading 802.11g chip maker
and is responsible for the CPU and radio chips in the WRT54G. The squashfs tar file contains patches for the 2.4.20 through 2.4.22 kernels. Unfortunately, none of these applies cleanly to the Broadcom kernel tree, so a bit of hand editing is necessary.

In this kind of competitive space it is natural for manufacturers to seek the lowest cost alternatives. Their choice? Linux, of course.

Linux has become the premium OS for inexpensive, feature-packed wireless networking. Linksys, one of the major wireless players, turned to Linux for its 802.11g next-generation Wi-Fi devices. When Cisco bought Linksys in early 2003, it inherited both the Linux devices and an emerging feud over the unreleased GPL source code. After several months of lobbying by open-source enthusiasts, Cisco relented and released the source.

for mo info just visit this website http://www.linuxjournal.com/article/7322


my linux box runs this services httpd(apache), php, mysql, gateway, proxy(squid), ftpd, mail(sendmail)w/ mailscanner, vpn(cipe), firewall under redhat Distribution. due to security/Vulnerability i customized my firewall(iptables). the server runs almost 4yrs. and 24X7

[javapenguin]

you mean LTSP? ... or just plain X on ssh?

plain X on ssh.

like ssh -l <username> <ipadd> <command>