12-05-2011
Quote:
Originally Posted by
Corona688
What those rules do greatly depends on your existing firewall setup. That's another reason it's good to know that you're using a wireless router: It means you probably already have a fairly complicated pre-packaged firewall setup that neither of us know much about. It might be better to use their system than craft raw rules yourself if posssible.
What's this -I OUTPUT 4? Why not just append rules at the same time as the firewall's being made instead of inserting later?
Well it goes DSL modem---Wireless router/LAN (static route from 192.0.3.0 to 192.0.0.0)
There is NAT at the modem and the router has some ports forwarded. There is no other hardware/software firewall.
Wireless router tells 192.0.3.0 how to get to 192.0.0.0. All I want to do is put some restrictions on the traffic that goes over that static route.
Dont I need to use -I OUTPUT for traffic leaving the router? Maybe I'm confused ... The WAN port on router is connected to dsl modem. The LAN ports on the router go to the switch to the 192.0.0.0 gateway device...
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LEARN ABOUT CENTOS
defaultrouter
defaultrouter(4) File Formats defaultrouter(4)
NAME
defaultrouter - configuration file for default router(s)
SYNOPSIS
/etc/defaultrouter
DESCRIPTION
The /etc/defaultrouter file specifies a IPv4 host's default router(s).
The format of the file is as follows:
IP_address
...
The /etc/defaultrouter file can contain the IP addresses or hostnames of one or more default routers, with each entry on its own line. If
you use hostnames, each hostname must also be listed in the local /etc/hosts file, because no name services are running at the time that
defaultrouter is read.
Lines beginning with the ``#'' character are treated as comments.
The default routes listed in this file replace those added by the kernel during diskless booting. An empty /etc/defaultrouter file will
cause the default route added by the kernel to be deleted.
Use of a default route, whether received from a DHCP server or from /etc/defaultrouter, prevents a machine from acting as an IPv4 router.
You can use routeadm(1M) to override this behavior.
FILES
/etc/defaultrouter Configuration file containing the hostnames or IP addresses of one or more default routers.
SEE ALSO
in.rdisc(1M), in.routed(1M), routeadm(1M), hosts(4)
SunOS 5.10 17 Aug 2004 defaultrouter(4)