setting my router as the default gateway

TheOneAndOnlySM · 03-26-2004, 05:39 PM

my router's address is 192.168.0.1 and i would like to set it to be the gateway to the internet (since it will also act as my firewall)

how can i determine if this is already done or how would i set this option?

*does it have anything to do with the "broadcast address" and if not, what is the broadcast address?

Peacedog · 03-26-2004, 05:44 PM

edit /etc/resolv.conf

nameserver 192.168.0.1

good luck.

trickykid · 03-26-2004, 05:52 PM

Quote:

Originally posted by PEACEDOG
edit /etc/resolv.conf

nameserver 192.168.0.1

good luck.

That's for DNS. Add your ISP's DNS servers in that file, not gateway.

To set as your gateway, simply do this at a terminal as root or console:

route add default gw 192.168.0.1

If you tell us what specific distro you are doing this in, I'm sure someone will be able to tell you how to add it permanently so it gets set each time.

TheOneAndOnlySM · 03-26-2004, 05:53 PM

it seems that file is modified at each bootup (and it currently lists my isp's dns servers)...

how can i stop the system from modifying the file at bootup? (i use dhcpcd)

borodimer · 03-26-2004, 05:55 PM

Well, here is what your information would (probably) be for your ip:
address 192.168.0.x (x is the last octet of your ip)
netmask 255.255.255.0
network 192.168.0.0
broadcast 192.168.0.255
gateway 192.168.0.1

These settings go in a variety of different places on different linux distros. If you post which one you need help with ...

Peacedog · 03-26-2004, 05:56 PM

sorry didn't mean to give bogus info, rechecked my system and, the proper file is /etc/rc.d/rc.inet1.conf. there is a line in the file

# Default gateway IP address:
GATEWAY="192.168.0.1"

should've checked that before posting, sometimes i think before i answer, sometimes i answer before i think. again my apologies.

syberdave · 03-26-2004, 06:46 PM

Quote:

Originally posted by PEACEDOG
sorry didn't mean to give bogus info, rechecked my system and, the proper file is /etc/rc.d/rc.inet1.conf. there is a line in the file

# Default gateway IP address:
GATEWAY="192.168.0.1"

should've checked that before posting, sometimes i think before i answer, sometimes i answer before i think. again my apologies.

the way specified is for slackware...
if you don't use slackware, you need to tell us what distribution you use.
it's different for every distribution.

Peacedog · 03-26-2004, 06:55 PM

Quote:

the way specified is for slackware...
if you don't use slackware, you need to tell us what distribution you use.
it's different for every distribution.

you are correct, the information i posted is for slackware. you are also correct that every distro is different, as i have only used a few it would be impossible to post the correct answer for all distros. if you would like to help in that endeavor, then my thanks be to you. ;-)

TheOneAndOnlySM · 03-27-2004, 06:00 PM

thanks everyone!

i setup my /etc/rc.d/rc.inet1.conf (yes, i use slackware) and modified the GATEWAY line as i needed to do so

now how can i check test the gateway? and if this gateway is being used, then is it necessary to still use iptables?

syberdave · 03-27-2004, 06:09 PM

well.. if the gateway is configured correctly, you would be able to access the external network (the internet, in your case)...
but if you were able to access the internet without configuring that, it most likely has been configured by DHCPCD already.

since you have a router already, you wouldn't need iptables. iptables is a firewall and also lets your computer be a gateway.

Peacedog · 03-27-2004, 06:12 PM

Quote:

thanks everyone!

i setup my /etc/rc.d/rc.inet1.conf (yes, i use slackware) and modified the GATEWAY line as i needed to do so

that was a guess on my part, since slack is listed as your first os.

Quote:

now how can i check test the gateway? and if this gateway is being used, then is it necessary to still use iptables?

i'd take a look at the security references thread,

http://www.linuxquestions.org/questi...threadid=45261

better to be safe than sorry.

and once again, i'd like to apologize for the bogus info, i felt terrible, i'm glad you got it sorted. good luck.