Hi all
I have just finished setting up my linux box to
provide ip_forwarding, and have confirmed that
ip_forwarding is active
cat /proc/sys/net/ipv4/ip_forward returns a '1'.
My system is Linux Mandrake 7.1, 2.2.19
I can dial up to the internet from the linux box, a
and when I ping both the linux boxes' internal and
external IP's from another computer on my LAN
I get replies that I can see both.
I.e. I can ping both addresses.
The problem occurs when I try to ping an external
internet address such as www.altavista.com from
a PC other than the Linux box. Using tracert(its
a Win2000 PC), I can only ping as far as the linux
box, no further.
What have I missed?
This is the listing from syslog:
Mar 22 19:53:53 linux1 pppd[1125]: pppd 2.4.0 started
by root, uid 0
Mar 22 19:53:53 linux1 pppd[1125]: Using interface
ppp0
Mar 22 19:53:53 linux1 pppd[1125]: Connect: ppp0 <-->
/dev/ttyS1
Mar 22 19:53:57 linux1 kernel: PPP BSD Compression
module registered
Mar 22 19:53:57 linux1 kernel: PPP Deflate Compression
module registered
Mar 22 19:53:57 linux1 pppd[1125]: local IP address
212.1.135.14
Mar 22 19:53:57 linux1 pppd[1125]: remote IP address
212.1.128.21
Mar 22 19:53:57 linux1 pppd[1125]: primary DNS
address 212.1.128.157
Mar 22 19:53:57 linux1 pppd[1125]: secondary DNS
address 212.1.128.156
So from this I can ping 212.1.135.14(IP assigned by
ISP)
but none of the other IP's.
Shane
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