Network route problem

[Luc MAIGNAN]

Le 07/01/2012 19:37, Kevin Martin a écrit :
>
> On 01/07/2012 11:56 AM, Luc MAIGNAN wrote:
>> Le 07/01/2012 18:53, Kevin Martin a écrit :
>>> On 01/07/2012 11:49 AM, Luc MAIGNAN wrote:
>>>> Le 07/01/2012 18:39, Kevin Martin a écrit :
>>>>> On 01/07/2012 11:30 AM, Luc MAIGNAN wrote:
>>>>>> Le 07/01/2012 18:21, Kevin Martin a écrit :
>>>>>>> On 01/07/2012 11:01 AM, Luc MAIGNAN wrote:
>>>>>>>> Yes, 50.184 is another box on the network on which the tunnel has been setup via racoon.
>>>>>>>> On 50.184 the access to 172.16.2.6 works fine. ANd I want to use 50.184 as a gateway for this host on the network.
>>>>>>>>
>>>>>>>> What email address have I to use to do not top post ?
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>> Le 07/01/2012 17:53, Kevin Martin a écrit :
>>>>>>>>> On 01/07/2012 10:46 AM, Luc MAIGNAN wrote:
>>>>>>>>>> 192.168.50.184 is a gateway on which a IPSEC tunnel allow to access to host 172.16.2.6
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>> Le 07/01/2012 17:45, Kevin Martin a écrit :
>>>>>>>>>>> On 01/07/2012 10:18 AM, Luc MAIGNAN wrote:
>>>>>>>>>>>> Hi,
>>>>>>>>>>>>
>>>>>>>>>>>> I have the following problem.
>>>>>>>>>>>>
>>>>>>>>>>>> Here is the output of : route -n :
>>>>>>>>>>>>
>>>>>>>>>>>> 0.0.0.0 192.168.50.2 0.0.0.0 UG 0 0 0 eth0
>>>>>>>>>>>> 169.254.0.0 0.0.0.0 255.255.0.0 U 1002 0 0 eth0
>>>>>>>>>>>> 172.16.2.6 192.168.50.184 255.255.255.255 UGH 0 0 0 eth0
>>>>>>>>>>>> 192.168.50.0 0.0.0.0 255.255.255.0 U 0 0 0 eth0
>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>> When I try to ping 172.16.2.6, it doesn't work while the first available route is used (0.0.0.0 via 192.168.50.2)
>>>>>>>>>>>>
>>>>>>>>>>>> How can I modify the order of the route table to force use of the right route ?
>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>> Thanks for any help
>>>>>>>>>>> What is 192.168.50.184? From the routing table, its the same ethernet nic so it's no wonder the route to 172.16.2.6 is
>>>>>>>>>>> using the
>>>>>>>>>>> 0.0.0.0 (default) route (even though it looks like you've tried to force it to a different route). If you want to split the
>>>>>>>>>>> 192.168.50 network you'll need two nics, you'll need to set the netmask correctly to split it between them, then you will be
>>>>>>>>>>> able to
>>>>>>>>>>> set the 172.16.2.6 host to route a different way.
>>>>>>>>>>>
>>>>>>>>>>> Kevin
>>>>>>>>> So the 50.184 address is another box which you have an ipsec tunnel to from the machine that this network route is on? How
>>>>>>>>> are you
>>>>>>>>> creating the tunnel?
>>>>>>>>>
>>>>>>>>> And please don't top post, it makes it hard to consistently read the thread.
>>>>>>>>>
>>>>>>>>> Kevin
>>>>>>> Do you have ip forwarding turned on on the host that you are trying to route over the tunnel (the one with the 172.16.2.6
>>>>>>> route)?
>>>>>>> And not top-posting (or bottom posting) is simply done by posting your replies at the bottom of the thread, not the top. That
>>>>>>> way
>>>>>>> people can read from top-to-bottom of a thread (like a book). Makes the threads much easier to follow then top posting (the
>>>>>>> Microsoft Outlook default).
>>>>>>>
>>>>>>> Kevin
>>>>>> Yes the ip forwarding is enabled.
>>>>>> With the route table I've described, I am directed on 50.2 and If I place on it the route to 172.16.2.6 via gw 50.184 it works.
>>>>>> But I consider that It is not necessary to pass via 50.2
>>>>>> It is why I search a way to modify the routage table
>>>>> Can you show a "traceroute 172.16.2.6" when you've got the tunnel up?
>>>>>
>>>>> Kevin
>>>> traceroute to 172.16.2.6 (172.16.2.6), 30 hops max, 60 byte packets
>>>> 1 192.168.50.2 (192.168.50.2) 0.187 ms 0.166 ms 0.154 ms
>>>> 2 192.168.50.184 (192.168.50.184) 0.545 ms 0.600 ms 0.603 ms
>>>> 3 * * *
>>>> 4 172.16.2.6 (172.16.2.6) 5.958 ms 4.324 ms 4.390 ms
>>>>
>>>> It should use directly 50.184 and not first 50.2
>>>>
>>>> Luc
>>> What type of device is 50.2? Is it a switch of some kind?
>>>
>>> Kevin
>> It is a fedora box, that works as a firewall/router
>>
>> Luc
> How is the box you are working on (what's the 192.168.50 address of that box, by the way) connected to the Fedora FW/RTR machine? Is
> it a crossover cable, is it thru a hub of some kind, and the same question for the 192.168.50.184 machine?
>
> Kevin

Both box are wired connected on the network thru a switch
Luc