Ok, I have attached the answers to the remaining
questions Ray, sorry I didn't include them the last
time.
--- Shane McKeown <[EMAIL PROTECTED]> wrote:
> Ok, here are the outputs from each of the commands:
>
> ifconfig -a:>
>
> eth0 Link encap:Ethernet HWaddr
> 00:10:4B:1E:93:EF
> inet addr:132.158.132.2
> Bcast:132.158.132.255 Mask:255.255.255.0
> UP BROADCAST RUNNING MULTICAST MTU:1500
> Metric:1
> RX packets:68 errors:0 dropped:0
> overruns:0
> frame:0
> TX packets:72 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:2 errors:0 dropped:0 overruns:0
> frame:0
> TX packets:2 errors:0 dropped:0 overruns:0
> carrier:0
> collisions:0 txqueuelen:0
>
> ppp0 Link encap:Point-to-Point Protocol
> inet addr:212.1.141.149
> P-t-P:212.1.128.25
> Mask:255.255.255.255
> UP POINTOPOINT RUNNING NOARP MULTICAST
> MTU:1500 Metric:1
> RX packets:21 errors:0 dropped:0
> overruns:0
> frame:0
> TX packets:21 errors:0 dropped:0
> overruns:0
> carrier:0
> collisions:0 txqueuelen:10
> ''''''''''''''''''''''''''''''''''''''''''''''''''''
>
> netstat -nr:>
>
> Kernel IP routing table
> Destination Gateway Genmask
> Flags
> MSS Window irtt Iface
> 212.1.128.25 0.0.0.0 255.255.255.255 UH
>
> 0 0 0 ppp0
> 132.158.132.0 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
> 0.0.0.0 212.1.128.25 0.0.0.0 UG
>
> 0 0 0 ppp0
>
> '''''''''''''''''''''''''''''''''''''''''''''''''''
>
> ipchains -L -n:>
>
> Chain input (policy ACCEPT):
> Chain forward (policy DENY):
> target prot opt source
> destination ports
> MASQ all ------ 132.158.132.0/24
> 0.0.0.0/0
> n/a
> Chain output (policy ACCEPT):
>
> ''''''''''''''''''''''''''''''''''''''''''''''''''''
> The internal IP addresses are as follows:-
>
> The IP of the Win2K PC is : 132.158.132.1
> The IP of the Linux Box is : 132.158.132.2
>
> Shane
> --- Ray Olszewski <[EMAIL PROTECTED]> wrote:
> > To get real help with routing problems, you need
> to
> > provide some basic
> > diagnostic output.
> >
> > For the Linux host that is acting as a router,
> > provide the output of:
> >
> > ifconfig -a
> > netstat -nr
> > ping <ip address of default gateway>
> > ipchains -L -n
> >
> > For the host that (apparently) cannot route
> through
> > the Linux host, provide
> > the routing table as well, and the addresses of
> the
> > nameservers it uses (not
> > sure where they would be on a Win2K host). Can you
> > ping or tracert to, **by
> > IP address**, the nameservers listed in the Win2K
> > equivalent of resolv.conf?
> >
> > Finally, when you say:
> >
> > >So from this I can ping 212.1.135.14(IP assigned
> by
> > >ISP)
> > >but none of the other IP's.
> >
> > what exactly do you mean? That the LAN host can
> ping
> > the Linux host's
> > external IP address, but not any address beyond
> > that? If so, I'd *guess*
> > either you are not NAT'ing a private-address LAN
> > properly or not
> > proxy-arp'ing a public address properly (depending
> > on which address range
> > the LAN uses). Only a guess, though, without the
> > details.
> >
> > At 12:59 PM 3/22/01 -0800, Shane McKeown wrote:
> > >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
> >
> >
> >
> > --
> > ------------------------------------"Never tell me
> > the odds!"---
> > Ray Olszewski
>
> > -- Han Solo
> > Palo Alto, CA
> [EMAIL PROTECTED]
>
=== message truncated ===
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===========================================================================
Interface List
0x1 ........................... MS TCP Loopback interface
0x2 ...00 10 5a 2e c0 3f ...... ELNK3 Ethernet Adapter
===========================================================================
===========================================================================
Active Routes:
Network Destination Netmask Gateway Interface Metric
0.0.0.0 0.0.0.0 132.158.132.2 132.158.132.1 1
127.0.0.0 255.0.0.0 127.0.0.1 127.0.0.1 1
132.158.132.0 255.255.255.0 132.158.132.1 132.158.132.1 1
132.158.132.1 255.255.255.255 127.0.0.1 127.0.0.1 1
132.158.255.255 255.255.255.255 132.158.132.1 132.158.132.1 1
224.0.0.0 224.0.0.0 132.158.132.1 132.158.132.1 1
255.255.255.255 255.255.255.255 132.158.132.1 132.158.132.1 1
Default Gateway: 132.158.132.2
===========================================================================
Persistent Routes:
None
The nameservers on the Win2K machine are the same as the linux box
212.1.128.156
212.1.128.157
and no, I can't ping or tracert to these ip's from the Win2K machine,
I can only ping the ip that the ISP assigns to the linux (dial-up) box.
Hope this helps.
Shane
