This stuff is supposed to be basic but it gets confusing. Could someone
help me understand a routing problem? I very much appreciate it; I know
there are lots of characters on this page. But this problem is preventing
me from scp'ing from my firewall (computer C) to fileserver (computer A),
which is what I need to do.
Topology
Computer A (e-smith)
eth1 public ip
eth0 10.0.0.1
Computer B (w2K)
10.0.0.2
192.168.0.1
Computer C (rh7.1)
192.168.0.10
Computers A and C are obviously separated by computer B.
PROBLEM:
Computer A can ping only 10.0.0.2 and public IP's, but not anything on
192.168.0.x.
Computer B can ping everything.
Computer C can ping anything on 192.168.0.x and any public IP, but
**cannot** ping any 10.0.0.x.
**So in essence, A cannot reach C, and C cannot reach A.
I told computer C how to get to A, and A how to get to C, and B how to get
to A and C. But it doesn't work. What am I doing wrong.
Here are the routing tables:
***Computer A
Kernel IP routing table
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use
Iface
10.0.0.0 * 255.255.255.0 U 0 0 0 eth0
192.168.0.0 pc-0002 255.255.255.0 UG 0 0 0 eth0
226.4.216.0 * 255.255.255.0 U 0 0 0 eth1
127.0.0.0 * 255.0.0.0 U 0 0 0 lo
default 226-4-216-1.ge 0.0.0.0 UG 0 0 0 eth1
("pc-0002" showed up after I did "route add -net 192.168.0.0/24 gw
10.0.0.2".)
***Computer B
Active Routes:
Network Destination Netmask Gateway Interface Metric
0.0.0.0 0.0.0.0 10.0.0.1 10.0.0.2 1
10.0.0.0 255.255.255.0 10.0.0.2 10.0.0.2 1
10.0.0.0 255.0.0.0 192.168.0.2 192.168.0.1 1
10.0.0.2 255.255.255.255 127.0.0.1 127.0.0.1 1
10.255.255.255 255.255.255.255 10.0.0.2 10.0.0.2 1
127.0.0.0 255.0.0.0 127.0.0.1 127.0.0.1 1
192.168.0.0 255.255.255.0 192.168.0.1 192.168.0.1 1
192.168.0.0 255.255.255.0 10.0.0.2 10.0.0.2 1
192.168.0.1 255.255.255.255 127.0.0.1 127.0.0.1 1
192.168.0.255 255.255.255.255 192.168.0.1 192.168.0.1 1
224.0.0.0 224.0.0.0 10.0.0.2 10.0.0.2 1
224.0.0.0 224.0.0.0 192.168.0.1 192.168.0.1 1
255.255.255.255 255.255.255.255 10.0.0.2 10.0.0.2 1
Default Gateway: 10.0.0.1
===========================================================================
Persistent Routes:
Network Address Netmask Gateway Address Metric
10.0.0.0 255.0.0.0 192.168.0.2 1
***Computer C
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use
Iface
192.168.0.0 * 255.255.255.0 U 0 0 0 eth0
10.0.0.0 192.168.0.1 255.0.0.0 UG 0 0 0 eth0
127.0.0.0 * 255.0.0.0 U 0 0 0 lo
default 192.168.0.1 0.0.0.0 UG 0 0 0 eth0
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