[SLUG] simple network questions . How to add a route to connect to a different class C network ie "can't connect from 10.0.0.x to 192.168.0.x"

[The Salisburys]

Hi all someone may help?   I have 2 home networks & 1 adsl connection. all together 4 network cards & 1 ppp for adsl one network is 10.0.0.x the other is 192.168.0.x (gateways are 10.0.0.1 & 192.168.0.1)   I have it only half working. Both networks connect to the internet OK.  But  I can't connect from 10.0.0.x to 192.168.0.x  although the reverse is OK. ie I can connect from  192.168.0.x  to 10.0.0.x     my 10.0.0.1        gateway machine:   utilises "eth1" to connect to the ppp0 conection for adsl modem my 10.0.0.1        gateway  machine:  utilises "eth0" to connect  to the 10.0.0.x    my 192.168.0.1 gateway   machine:  utilises "eth1" to connect to the 10.0.0.x  my 192.168.0.1 gateway machine:    utilises "eth0" to connect to the 192.168.0.x     I am trying to work this out from the "route" manpage. and am trying to add a  new route .... see below. The commands, comments,output  ....are from the 10.0.0.1 gateway machine. Maybe I got the concept totally wrong.  If you know the answer I guess you can understand & idon't need to explain more. If you need more system output please just ask.   I am wondering whether I need a 3rd NIC on the 10.0.0.1 gateway... I hope not!   Any help gladly appreciated   Thanks Roger   Below is some of the  terminal output: (10.0.0.1 gateway machine)  .....the  " xxxx____________" are my comments ......the    "#xxxxx"   are terminal commands as root .......the rest is "standard output" it basically shows how the enviroment changes before & after the adsl connection is started and before & after the " route add "  commands are given. IT DOESNOT WORK! (connect from 10.0.0.x to 192.168.0.x  or simply ping) ############################################################################################################# #adsl-stop nonactive_ifconfig____________________________________ #ifconfig eth0 eth1 ppp0 eth0      Link encap:Ethernet  HWaddr 00:A0:CC:75:43:BE            inet addr:10.0.0.1  Bcast:10.0.0.255  Mask:255.255.255.0 eth1      Link encap:Ethernet  HWaddr 00:A0:CC:75:28:11            UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1 nonactiveroute__________________________________ #route  -n Kernel IP routing table Destination     Gateway         Genmask         Flags Metric Ref    Use Iface 10.0.0.0        0.0.0.0         255.255.255.0   U     0      0        0 eth0 169.254.0.0     0.0.0.0         255.255.0.0     U     0      0        0 eth0 #adsl-start activeroute____________________________________ #route  -n Kernel IP routing table Destination     Gateway         Genmask         Flags Metric Ref    Use Iface 172.31.196.24   0.0.0.0         255.255.255.255 UH    0      0        0 ppp0 10.0.0.0        0.0.0.0         255.255.255.0   U     0      0        0 eth0 169.254.0.0     0.0.0.0         255.255.0.0     U     0      0        0 eth0 0.0.0.0         172.31.196.24   0.0.0.0         UG    0      0        0 ppp0 adding_newroute____________________________________   route  add -net 192.168.0.0 netmask 255.255.255.0 dev eth0   route  add -net 192.168.0.0 netmask 255.255.255.0 gw 192.168.0.1 dev eth0 new_route_added___________________________________ #route -n Kernel IP routing table Destination     Gateway         Genmask         Flags Metric Ref    Use Iface 172.31.196.24   0.0.0.0         255.255.255.255 UH    0      0        0 ppp0 10.0.0.0        0.0.0.0         255.255.255.0   U     0      0        0 eth0 192.168.0.0     192.168.0.1     255.255.255.0   UG    0      0        0 eth0 192.168.0.0     0.0.0.0         255.255.255.0   U     0      0        0 eth0 169.254.0.0     0.0.0.0         255.255.0.0     U     0      0        0 eth0 0.0.0.0         172.31.196.24   0.0.0.0         UG    0      0        0 ppp0 active_ifconfig____________________________________ #ifconfig eth0 eth1 ppp0 eth0      Link encap:Ethernet  HWaddr 00:A0:CC:75:43:BE            inet addr:10.0.0.1  Bcast:10.0.0.255  Mask:255.255.255.0           UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1 eth1      Link encap:Ethernet  HWaddr 00:A0:CC:75:28:11            UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1 ppp0      Link encap:Point-to-Point Protocol            inet addr:139.168.85.179  P-t-P:172.31.196.24  Mask:255.255.255.255           UP POINTOPOINT RUNNING NOARP MULTICAST  MTU:1492  Metric:1

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