eric clover wrote:
> im at the end of a rope here.
> i have a very angry wife that cant get on the internet.
> she is not very happy with me right now.
> _Please Help Me_
>
> eric
>
> ----- Original Message -----
> From: "eric clover" <[EMAIL PROTECTED]>
> To: "red hat list" <[EMAIL PROTECTED]>
> Sent: Wednesday, December 27, 2000 12:07 PM
> Subject: [RHL] cant reach internal network anymore
>
> hello,
>
> im having some difficulty getting my internal network to work again. i have
> 3 masq'd machines behind a firewall and i cant get the firewall'd machine to
> ping the other masq'd machines. the masq'd machines can ping each other but
> not the firewall machine and the firewall machine cant ping any of the other
> machines.
> this is my output from route & ifconfig:
>
> Kernel IP routing table
> Destination Gateway Genmask Flags Metric Ref Use
> Iface
> spanky bl 255.255.255.255 UGH 0 0 0 eth0
> bl * 255.255.255.255 UH 0 0 0 eth0
> burp bl 255.255.255.255 UGH 0 0 0 eth0
> clog bl 255.255.255.255 UGH 0 0 0 eth0
> 192.168.5.0 * 255.255.255.0 U 0 0 0 eth0
> 127.0.0.0 * 255.0.0.0 U 0 0 0 lo
> eth0 Link encap:Ethernet HWaddr 00:40:C7:87:5B:58
> inet addr:192.168.5.5 Bcast:192.168.5.255 Mask:255.255.255.0
> UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
> RX packets:26 errors:0 dropped:0 overruns:0 frame:0
> TX packets:57 errors:0 dropped:0 overruns:0 carrier:0
> collisions:1 txqueuelen:100
> Interrupt:9 Base address:0xe000
>
> lo Link encap:Local Loopback
> inet addr:127.0.0.1 Mask:255.0.0.0
> UP LOOPBACK RUNNING MTU:3924 Metric:1
> RX packets:34 errors:0 dropped:0 overruns:0 frame:0
> TX packets:34 errors:0 dropped:0 overruns:0 carrier:0
> collisions:0 txqueuelen:0
>
> Please Help.
>
Bummer on the wife deal. I can relate. Your routing is very different than
mine, but the first thing that comes to mind is what interface connects to the
internet? The configs I am most familier with have one interface for the
internal network (eth0 in my case) and another for connection to the rest of
the world. If the ifconfig and route output you posted are from one of the
non-firewall machines then thing still look pretty strange to me.
on my firewalls, I have the standard (I guess) ipmasqing setup:
eth0 Link encap:Ethernet HWaddr 00:40:05:44:70:DC
inet addr:192.168.0.1 Bcast:192.168.0.255 Mask:255.255.255.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:1133836 errors:0 dropped:885 overruns:0 frame:0
TX packets:1604746 errors:17232 dropped:0 overruns:0 carrier:17230
collisions:292910 txqueuelen:100
Interrupt:11 Base address:0x260
eth1 Link encap:Ethernet HWaddr 00:40:05:48:4B:29
inet addr:xxx.xxx.xxx.xxx Bcast:xxx.xxx.xxx.bc Mask:255.255.255.248
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:386131 errors:0 dropped:0 overruns:0 frame:0
TX packets:412545 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:100
Interrupt:10 Base address:0x300
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
UP LOOPBACK RUNNING MTU:3924 Metric:1
RX packets:7905 errors:0 dropped:0 overruns:0 frame:0
TX packets:7905 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
[bhughes@tulfw1 bhughes]$ route -n
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
xxx.xxx.xxx.xxx 0.0.0.0 255.255.255.255 UH 0 0 0 eth1
^ ^_ host route
|_ this is my external interface ipaddress from isp
192.168.0.1 0.0.0.0 255.255.255.255 UH 0 0 0 eth0
^ ^_ host route
|_ this is my internal interface address assigned by me
xxx.xxx.xxx.net 0.0.0.0 255.255.255.248 U 0 0 0 eth1
^ ^_ network route
|_ this is my external network number assigned by isp ( I have a block of
five addresses)
192.168.0.0 0.0.0.0 255.255.255.0 U 0 0 0 eth0
^ ^_ network route
|_ this is my internal network number assigned by me
127.0.0.0 0.0.0.0 255.0.0.0 U 0 0 0 lo
0.0.0.0 xxx.xxx.xxx.gw 0.0.0.0 UG 0 0 0 eth1
^ ^ ^_ network route with gw
defined
| |_ this is the gateway assigned by isp (actually one of
my numbers)
|
|
|_ this is my default route number assigned by isp ( I have a block of five
addresses)
On a host behind the firewall:
[bhughes@bretdell_linux bhughes]$ ifconfig
eth0 Link encap:Ethernet HWaddr 00:E0:98:06:87:D1
inet addr:192.168.0.128 Bcast:192.168.0.255 Mask:255.255.255.0
UP BROADCAST RUNNING MTU:1500 Metric:1
RX packets:8412 errors:0 dropped:0 overruns:0 frame:2
TX packets:7061 errors:8 dropped:0 overruns:0 carrier:16
collisions:1660 txqueuelen:100
Interrupt:3 Base address:0x300
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
UP LOOPBACK RUNNING MTU:3924 Metric:1
RX packets:14 errors:0 dropped:0 overruns:0 frame:0
TX packets:14 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
Destination Gateway Genmask Flags Metric Ref Use Iface
192.168.0.0 0.0.0.0 255.255.255.0 U 0 0 0 eth0
127.0.0.0 0.0.0.0 255.0.0.0 U 0 0 0 lo
0.0.0.0 192.168.0.1 0.0.0.0 UG 0 0 0 eth0
As you can see, my laptop knows only that any number on the 192.168.0.0/24
network is on eth0 and anything else should be sent to the firewall (internal
address) at 192.168.0.1
Variations on this setup work for me using dsl static ipaddresses (example
shown), dsl via pppoe, dialup etc...
I could not tell exactly what was going on from you post send a description of
your setup, how you connect to Internet and interfaces used and I'll see if I
can help. Please reply to me and the list as the process is useful incase I
lead you astray or if not, so someone else can find the thread in the archives
later.
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