Re: [slim] (a bit OT) firewall in the router (was Squeezebox2)

2005-03-10 Thread Mr Nõu
Jack Coates wrote:
Phil Karn wrote:
http://leaf.sourceforge.net provides a number of very nice pre-rolled 
Linux firewall distributions which are well-suited for use on Soekris.

I particularly want to mention the m0n0wall-project, 
[http://m0n0.ch/wall/], specifically designed to run on embedded 
firmware. I, and many like me, run it on discarded Pentium machines with 
no hard drive, and next to no memory. (Boot from CD-rom, config file on 
dikette) with great satisfatcion and speed. i always keep a few of those 
garbage bin collectibles for need of potential spare parts. And now one 
is biding its time as a free (cost-wise) important building block in the 
home network topology.

/peter
___
Discuss mailing list
Discuss@lists.slimdevices.com
http://lists.slimdevices.com/lists/listinfo/discuss


Re: [slim] (a bit OT) firewall in the router (was Squeezebox2)

2005-03-09 Thread ron thigpen
Ken Hokugo wrote:
Dean or anyone,
Would the firewall feature in these routers (wireless or wired) be good 
enough so that I can get rid of Zonealarm Pro which contributes 10 to 
15% more of CPU usage when playing Slimserver?  If I could get rid of 
the sw based firewall, that would be great.
the short answer is that there is good reason to use both the features 
of your router firewall at the network edge, _and_ software protection 
on the machines inside your LAN.  the reason is that each can protect 
from different threats.

the edge firewall will close off ports, can drop packets for some well 
known attacks (SYN, et.al.) and just generally keep net-scanners at bay.

the s/w firewall can do some or all of the above, but also protect you 
from downloaded components that may be trying to send data.  zone alarm 
pro is particularly good at this.  it can also help keep a virus from 
spreading inside your LAN.

as far as the CPU issue with ZAP, have you tried making configuration 
changes that might keep it from inspecting the SS/SB packets so 
aggressively?  i don't have any specific recommendations off the top of 
my head, but i do know that ZAP has some very granular settings for 
trust that can be based on program, IP, port, protocol, etc.  i'd guess 
you could get it to stand down somewhat w/r/t this traffic.

--rt
___
Discuss mailing list
Discuss@lists.slimdevices.com
http://lists.slimdevices.com/lists/listinfo/discuss


Re: [slim] (a bit OT) firewall in the router (was Squeezebox2)

2005-03-09 Thread Phil Karn
Ken Hokugo wrote:
Dean or anyone,
Would the firewall feature in these routers (wireless or wired) be good 
enough so that I can get rid of Zonealarm Pro which contributes 10 to 
15% more of CPU usage when playing Slimserver?  If I could get rid of 
the sw based firewall, that would be great.
A particularly powerful and flexible firewall is a Linux box with 
multiple Ethernet interfaces. If you'd rather not dedicate a full-blown 
PC to the job, Soekris Engineering (www.soekris.com) makes a line of 
single-board PC-compatible machines specifically designed as network 
engines. They come without any software, so you have to roll your own, 
but there are many people who can help you.

I have a Soekris net4801 acting as my primary router. It provides QoS 
(Quality of Service) in the upstream direction to my DSL line, along 
with DHCP, IPv6 routing/tunneling and IPv4 NAT for any local machines 
that need it.

Except for the filtering inherent in a NAT, it doesn't actually filter 
any packets because I basically don't believe in firewalls; I'd much 
rather just keep my individual machines as secure as possible. 
Basically, that means banning anything and everything from Microsoft; 
we're in the process of getting rid of the very last Windows machine on 
our network (my wife's desktop) and replacing it with an iMac. The 
combination of Mac OS X on the desktop and Linux on servers can do 
pretty much everything Windows can do, and do it a whole lot better and 
with far better security.

Phil
___
Discuss mailing list
Discuss@lists.slimdevices.com
http://lists.slimdevices.com/lists/listinfo/discuss


Re: [slim] (a bit OT) firewall in the router (was Squeezebox2)

2005-03-09 Thread Jack Coates
Phil Karn wrote:
Ken Hokugo wrote:
Dean or anyone,
Would the firewall feature in these routers (wireless or wired) be 
good enough so that I can get rid of Zonealarm Pro which contributes 
10 to 15% more of CPU usage when playing Slimserver?  If I could get 
rid of the sw based firewall, that would be great.

A particularly powerful and flexible firewall is a Linux box with 
multiple Ethernet interfaces. If you'd rather not dedicate a full-blown 
PC to the job, Soekris Engineering (www.soekris.com) makes a line of 
single-board PC-compatible machines specifically designed as network 
engines. They come without any software, so you have to roll your own, 
but there are many people who can help you.

http://leaf.sourceforge.net provides a number of very nice pre-rolled 
Linux firewall distributions which are well-suited for use on Soekris.

--
Jack at Monkeynoodle dot Org: It's a Scientific Venture...
Riding the Emergency Third Rail Power Trip since 1996!
___
Discuss mailing list
Discuss@lists.slimdevices.com
http://lists.slimdevices.com/lists/listinfo/discuss