[Gllug] routing problems (ip forwarding)

[Xander D Harkness]

Liad Bokovsky wrote:

>Can you ping 192.168.1.59 from the Zaurus (192.168.2.190) ? I assume you can.
>  
>
No, It will not pass across and I have ip_forwarding turned on and 
firewall off.

>Zaurus	192.168.2.190/24 gw 192.168.2.1
>
That is correct.

>
>Laptop	192.168.2.1/24
>Laptop	192.168.1.59/24	 gw 192.168.1.1
>  
>
That is  also correct.

>Router	192.168.1.1/24	 gw INTERNET
>  
>
Yes

>Did you add a static route to network 192.168.2.0/24 on the Router?
>  
>
No, as the laptop only has one gateway, I think that it would route to 
the Internet by default to anything that is not 192.168.1.0/24 or 
192.168.2.0/24.

The routing table shows that it knows how to reach both networks so it 
should not need a static route.  The laptop can ping hosts in both subnets.

It is really quite strange.  I think that I might roll another kernel 
just to see that this one is behaving (beta software and all).

Kind regards
Xander

>Liad
>
>
>
>On Fri, Sep 20, 2002 at 06:15:58PM +0100 , Xander D Harkness mentioned that:
>
>  
>
>>Liad Bokovsky wrote:
>>
>>    
>>
>>>send the following data as well:
>>>
>>>netmasks.
>>>
>>>      
>>>
>>255.255.255.0 on all
>>
>>    
>>
>>>routing table on the linux machine (netstat -rn)
>>>
>>>      
>>>
>>Destination     Gateway         Genmask         Flags   MSS Window  irtt 
>>Iface
>>192.168.2.0   0.0.0.0         255.255.255.0  U        40 0          0 eth1
>>192.168.1.0     0.0.0.0         255.255.255.0   U        40 0          0 
>>eth0
>>127.0.0.0       0.0.0.0         255.0.0.0       U        40 0          0 lo
>>0.0.0.0         192.168.1.1   0.0.0.0         UG       40 0          0 eth0
>>
>>    
>>
>>>check if ip forwarding is really enabled (cat
>>>/proc/sys/net/ipv4/ip_forward should return 1).
>>>
>>>      
>>>
>>The cat command did return 1
>>
>>Kind regards
>>Xander
>>
>>    
>>
>>>Liad
>>>
>>>On Fri, Sep 20, 2002 at 04:49:49PM +0100 , Xander D Harkness mentioned that:
>>>
>>> 
>>>
>>>      
>>>
>>>>I have a laptop I am trying to route through.
>>>>
>>>>The laptop has a wireless card and a built-in ethernet port.
>>>>
>>>>I am trying to use the laptop as a wireless router for my Zaurus.
>>>>
>>>>ipaddress for ethernet is 192.168.1.59 (internet gateway 192.168.1.1)
>>>>ipaddress for wireless is 192.168.2.1
>>>>ipaddress for zaurus is 192.168.1.190 (gateway 192.168.2.1)
>>>>
>>>>I can ping the laptop (192.168.2.1) from the Zaurus.
>>>>I can ping the zaurus (192.168.2.190) from the laptop
>>>>I cannot ping through the laptop in either direction.
>>>>
>>>>I have disabled any firewall and enabled IP forwarding.
>>>>
>>>>The laptop is running limbo2 (latest RH beta) kernel version 2.4.18-5.58
>>>>
>>>>Has anyone an idea as to why?
>>>>
>>>>Kind regards
>>>>Xander
>>>>
>>>>[root at lappy network-scripts]# echo 1 > /proc/sys/net/ipv4/ip_forward
>>>>[root at lappy network-scripts]# ifconfig
>>>>eth0      Link encap:Ethernet  HWaddr 00:90:F5:07:BB:FC
>>>>        inet addr:192.168.1.59  Bcast:192.168.1.255  Mask:255.255.255.0
>>>>        UP BROADCAST NOTRAILERS RUNNING MULTICAST  MTU:1500  Metric:1
>>>>        RX packets:332 errors:0 dropped:0 overruns:0 frame:0
>>>>        TX packets:442 errors:0 dropped:0 overruns:0 carrier:0
>>>>        collisions:0 txqueuelen:100
>>>>        RX bytes:305411 (298.2 Kb)  TX bytes:40260 (39.3 Kb)
>>>>        Interrupt:10 Base address:0x3200
>>>>
>>>>eth1      Link encap:Ethernet  HWaddr 00:02:2D:27:84:93
>>>>        inet addr:192.168.2.1  Bcast:192.168.2.255  Mask:255.255.255.0
>>>>        UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
>>>>        RX packets:115 errors:0 dropped:0 overruns:0 frame:0
>>>>        TX packets:4 errors:35 dropped:0 overruns:0 carrier:0
>>>>        collisions:0 txqueuelen:100
>>>>        RX bytes:10188 (9.9 Kb)  TX bytes:5640 (5.5 Kb)
>>>>        Interrupt:3 Base address:0x100
>>>>
>>>>lo        Link encap:Local Loopback
>>>>        inet addr:127.0.0.1  Mask:255.0.0.0
>>>>        UP LOOPBACK RUNNING  MTU:16436  Metric:1
>>>>        RX packets:72 errors:0 dropped:0 overruns:0 frame:0
>>>>        TX packets:72 errors:0 dropped:0 overruns:0 carrier:0
>>>>        collisions:0 txqueuelen:0
>>>>        RX bytes:4694 (4.5 Kb)  TX bytes:4694 (4.5 Kb)
>>>>
>>>>
>>>>
>>>>
>>>>-- 
>>>>Gllug mailing list  -  Gllug at linux.co.uk
>>>>http://list.ftech.net/mailman/listinfo/gllug
>>>>   
>>>>
>>>>        
>>>>
>>> 
>>>
>>>      
>>>
>>-- 
>>Gllug mailing list  -  Gllug at linux.co.uk
>>http://list.ftech.net/mailman/listinfo/gllug
>>    
>>
>
>  
>


-- 
Gllug mailing list  -  Gllug at linux.co.uk
http://list.ftech.net/mailman/listinfo/gllug