Re: networking help (routing table and iptables)
Alex Samad wrote:
> On Fri, Nov 06, 2009 at 06:08:00PM -0500, H.S. wrote:
>> Alex Samad wrote:
>>> On Fri, Nov 06, 2009 at 04:35:58PM -0500, H.S. wrote:
>>>> I have this routing table:
>>>>> /sbin/route -n
>>>> Kernel IP routing table
>>>> Destination Gateway Genmask Flags Metric Ref Use Iface
>>>> <MyWANIP> 0.0.0.0 255.255.255.255 UH 0 0 0 ppp0
>>>> 192.168.5.0 0.0.0.0 255.255.255.0 U 0 0 0 ath0
>>>> 192.168.1.0 0.0.0.0 255.255.255.0 U 0 0 0 eth1
>>>> 192.168.0.0 0.0.0.0 255.255.255.0 U 0 0 0 eth0
>>>> 0.0.0.0 0.0.0.0 0.0.0.0 U 0 0 0 ppp0
>>>>
>>>>
>>>> Does this look good to the networking gurus here? I am not sure what to
>>>> make of the last line.
>>> last line is defining the default gateway - where to send packets when
>>> it doesn't have a local route.
>>>
>>> also try using
>>>
>>> ip route
>> Yes, more explanation here.
>>> ip route
>> 206.248.154.122 dev ppp0 proto kernel scope link src 69.196.173.66
>> 192.168.5.0/24 dev ath0 proto kernel scope link src 192.168.5.1
>> 192.168.1.0/24 dev eth1 proto kernel scope link src 192.168.1.10
>> 192.168.0.0/24 dev eth0 proto kernel scope link src 192.168.0.1
>> default dev ppp0 scope link
>>
>> So that last line of the route command output earlier is present in all
>> home router then?
>
> depends, if you have configured a default route then yes, if not then
> no.
>
> you could trick it with something like (try this)
>
> ip r d default
> ip r a 0.0.0.0/1 dev ppp0
> ip r a 128.0.0.0/1 dev ppp0
>
> ip r
>
>
> you shouldn't see a default route but your internet should still be
> working.
>
Internet is working fine. Lan and Wlan to WAN, between lan and wlan,
between vpn and wlan and wan and so on. I just wanted to know if my
routing stuff was right after seeing many routing tables, while reading
about networking, which did not have a line like my last line.
Thanks.
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