Re: Routing problems

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> Please post 
> * Full details of your network
> * The routing table, uncensored :)

route
Destination     Gateway         Genmask         Flags Metric Ref    Use Iface
192.168.180.0 *                       255.255.255.0   U     0      0        0 eth3
10.200.1.0      10.255.250.250  255.255.255.0   UG    0      0        0 eth2
195.39.130.0    *                      255.255.255.0   U     0      0        0 eth0
10.1.1.0        10.255.250.250   255.255.255.0   UG    0      0        0 eth2
10.201.1.0      10.255.250.250  255.255.255.0   UG    0      0        0 eth2
10.255.250.0    *                     255.255.255.0   U     0      0        0 eth2
link-local      *                        255.255.0.0     U     1003   0        0 eth0
link-local      *                        255.255.0.0     U     1004   0        0 eth2
link-local      *                        255.255.0.0     U     1005   0        0 eth3
172.17.0.0   192.168.180.100 255.255.0.0     UG    0      0        0 eth3
192.168.0.0  192.168.180.100 255.255.0.0     UG    0      0        0 eth3
default         pc89.n                0.0.0.0           UG    0      0        0 eth0

ifconfig 
eth0      Link encap:Ethernet  HWaddr 00:1B:11:B1:5D:0D  
          inet addr:195.39.130.92  Bcast:195.39.130.255  Mask:255.255.255.0
          inet6 addr: fe80::21b:11ff:feb1:5d0d/64 Scope:Link
          UP BROADCAST RUNNING PROMISC MULTICAST  MTU:1500  Metric:1
          RX packets:5174154 errors:0 dropped:0 overruns:0 frame:0
          TX packets:3474632 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:2851269308 (2.6 GiB)  TX bytes:646868735 (616.9 MiB)
          Interrupt:21 Base address:0xca00 

eth2      Link encap:Ethernet  HWaddr 00:19:5B:38:B7:36  
          inet addr:10.255.250.37  Bcast:10.255.250.255  Mask:255.255.255.0
          inet6 addr: fe80::219:5bff:fe38:b736/64 Scope:Link
          UP BROADCAST RUNNING PROMISC MULTICAST  MTU:1500  Metric:1
          RX packets:18187178 errors:0 dropped:0 overruns:0 frame:0
          TX packets:2506338 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:1585335954 (1.4 GiB)  TX bytes:1901082841 (1.7 GiB)
          Interrupt:22 Base address:0xa900 

eth3      Link encap:Ethernet  HWaddr 00:1B:11:B1:1C:D4  
          inet addr:192.168.180.100  Bcast:192.168.180.255  Mask:255.255.255.0
          inet6 addr: fe80::21b:11ff:feb1:1cd4/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:2048995 errors:0 dropped:0 overruns:0 frame:0
          TX packets:4746 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:201714109 (192.3 MiB)  TX bytes:364982 (356.4 KiB)
          Interrupt:18 Base address:0x6800 

lo        Link encap:Local Loopback  
          inet addr:127.0.0.1  Mask:255.0.0.0
          inet6 addr: ::1/128 Scope:Host
          UP LOOPBACK RUNNING  MTU:16436  Metric:1
          RX packets:255570 errors:0 dropped:0 overruns:0 frame:0
          TX packets:255570 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0 
          RX bytes:25105805 (23.9 MiB)  TX bytes:25105805 (23.9 MiB)

Thanx. :)


> ------------ Původní zpráva ------------
> Od: Andrew Haley <aph@xxxxxxxxxx>
> Předmět: Re: Routing problems
> Datum: 18.2.2010 12:31:34
> ----------------------------------------
> On 02/18/2010 11:19 AM, j.halifax . wrote:
> >> What is the address of the subnet "other LAN" ?
> >> There seem to be two more subnets, 192.168.180.0 and 172.17.0.0.
> > You are right, both of them are accessible through eth3 and the same 
> > box of 192.168.180.100 (I didn't include the whole routing table) like:
> > 172.17.0.0    192.168.180.100  255.255.0.0    UG   0    0    0  eth3
> > 192.168.0.0  192.168.180.100  255.255.0.0    UG   0    0    0  eth3.
> 
> Please post
> 
> * Full details of your network
> * The routing table, uncensored
> 
> >> ------------ Původní zpráva ------------
> >> Od: Andrew Haley <aph@xxxxxxxxxx>
> >> Předmět: Re: Routing problems
> >> Datum: 18.2.2010 11:51:17
> >> ----------------------------------------
> >> On 02/18/2010 10:01 AM, Rick Sewill wrote:
> >>> On Thu, 2010-02-18 at 07:31 +0100, j.halifax . wrote: 
> >>>> Hi All,
> >>>>
> >>>> Could you please help me with routing in the LAN default GW box?
> >>>>
> >>>> I have 
> >>>> eth0 connected to Internet 
> >>>> eth2 to internal LAN 10.255.250.0 
> >>>> LAN default GW is 10.255.250.37
> >>>> eth3 connected to other LAN
> >>
> >> What is the address of the subnet "other LAN" ?
> >>
> >> There seem to be two more subnets, 192.168.180.0 and 172.17.0.0.
> >>
> >> Andrew.
> >>
> >>
> >>
> >>>> Route in the default GW (10.255.250.37):
> >>>>
> >>>> Destination       Gateway           Genmask         Flags Metric Ref  Use
> >> Iface
> >>>> 192.168.180.0   *                       255.255.255.0   U      0      0    
>  
> >>  0  eth3
> >>>> 10.255.250.0     *                       255.255.255.0   U      0      0   
>  
> >>   0  eth2
> >>>> link-local           *                       255.255.0.0      U     1003  
> 0 
> >>       0  eth0
> >>>> link-local           *                       255.255.0.0      U     1004  
> 0 
> >>       0  eth2
> >>>> link-local           *                       255.255.0.0      U     1005  
> 0 
> >>       0  eth3
> >>>> 172.17.0.0       192.168.180.100  255.255.0.0      UG    0      0        0
> 
> >> eth3
> >>>> default             dsl-router            0.0.0.0             UG    0     
> 0 
> >>       0  eth0
> >>>>
> >>>> >From the LAN default GW (10.255.250.37) 
> >>>> - I can ping 172.17.1.50:
> >>>> &nbsp;&nbsp;PING 172.17.1.50 (172.17.1.50) 56(84) bytes of data.
> >>>> &nbsp;&nbsp;64 bytes from 172.17.1.50: icmp_seq=1 ttl=253 time=5.62 ms
> >>>> &nbsp;&nbsp;64 bytes from 172.17.1.50: icmp_seq=2 ttl=253 time=3.29 ms
> >>>>
> >>>> >From other boxes in the same LAN (e.g. 10.255.250.38)
> >>>> - I cann't ping 172.17.1.50
> >>>> - I cann't traceroute 172.17.1.50: It goes to LAN default GW 
> >>>> &nbsp;&nbsp;10.255.250.37 and then to its default GW dsl-router on eth0
> >>>> &nbsp;&nbsp;instead of eth3 (so that the routing rule for 172.17.0.0
> doesn't
> >>
> >>>> &nbsp;&nbsp;match for 172.17.1.50)
> >>>>
> >>>> Can anybody help pleasee?
> >>>> Thank you so much!
> >>>> jh
> >>>>
> >>>
> >>> Your problem has me stumped.
> >>>
> >>> The only thing I can think of is to ask how iptables is set up.
> >>>
> >>> I think you have iptables doing masquerading to the eth0 interface.
> >>> The masquerading shouldn't be the problem.
> >>>
> >>> Are you doing anything special with packets coming in eth2 in iptables?
> >>>
> >>> I assume 10.255.250.38 can ping the Internet so you have routing set up.
> >>>
> >>> I can't think of anything else to check at this moment.
> >>>
> >>> Hopefully others will have better suggestions and ideas where to look.
> >>>
> >>>
> >>>
> >>
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