Gentoo Archives: gentoo-user

From: Mick <michaelkintzios@×××××.com>
To: gentoo-user@l.g.o
Subject: Re: [gentoo-user] Need help networking two machines.
Date: Sun, 14 Jan 2007 21:01:22
Message-Id: 200701142055.31064.michaelkintzios@gmail.com
In Reply to: [gentoo-user] Need help networking two machines. by Dale
1 Some quick thoughts:
2
3 On Friday 12 January 2007 10:09, Dale wrote:
4 > Hi
5 >
6 > I have done this before. Maybe something has changed because I can not
7 > get it to work now. My main rig is called smoker. The second rig is
8 > currently booted off the CD. I plan to use my main rig to sync and get
9 >
10 > distfiles off of. This is off smokers /etc/conf.d/net file:
11 > > config_eth0=( "192.168.0.1 netmask 255.255.255.0 broadcast
12 > > 192.168.0.255" )
13 >
14 > More info from smoker:
15 > > eth0 Link encap:Ethernet HWaddr 00:01:53:81:00:E7
16 > > inet addr:192.168.0.1 Bcast:192.168.0.255 Mask:255.255.255.0
17 > > UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
18 > > RX packets:34 errors:0 dropped:0 overruns:0 frame:0
19 > > TX packets:205 errors:0 dropped:0 overruns:0 carrier:0
20 > > collisions:0 txqueuelen:1000
21 > > RX bytes:16458 (16.0 Kb) TX bytes:5670 (5.5 Kb)
22 > > Interrupt:10 Base address:0xc000
23 > >
24 > > root@smoker / # ping 192.168.0.2
25 > > PING 192.168.0.2 (192.168.0.2) 56(84) bytes of data.
26 > > From 192.168.0.1 icmp_seq=1 Destination Host Unreachable
27 > > From 192.168.0.1 icmp_seq=2 Destination Host Unreachable
28 > > From 192.168.0.1 icmp_seq=3 Destination Host Unreachable
29 > >
30 > > --- 192.168.0.2 ping statistics ---
31 > > 5 packets transmitted, 0 received, +3 errors, 100% packet loss, time
32 > > 4009ms
33 > > , pipe 3
34 > > root@smoker / #
35 >
36 > If it helps any, I see traffic going over the network in gkrellm.
37
38 So, we know that packets go out, but we don't know if they are returned. We
39 also don't know if in case they are returned your iptables knock them out.
40
41 > > root@smoker / # iptables -L
42 > > Chain INPUT (policy ACCEPT)
43 > > target prot opt source destination
44 > > ACCEPT tcp -- anywhere anywhere tcp dpt:http
45 > > DROP all -- anywhere anywhere state
46 > > INVALID,NEW
47 > >
48 > > Chain FORWARD (policy ACCEPT)
49 > > target prot opt source destination
50 > > DROP all -- anywhere anywhere state
51 > > INVALID,NEW
52 > >
53 > > Chain OUTPUT (policy ACCEPT)
54 > > target prot opt source destination
55 > > root@smoker / #
56
57 Try again after you take iptables down, /etc/init.d/iptables stop, so that you
58 eliminate one factor at a time.
59
60 > Route returns loopback and that is all. Looks suspicious to me. It
61 > doesn't have iptables installed on the CD. I guess there are none.
62 >
63 > Oh, to test the cable, I set both to the same address. When I tried to
64 > bring up the network, it gave me a error that the address was in use or
65 > something like that. It saw it at least.
66 >
67 > Can someone tell me what I am doing wrong? It has to be me. It almost
68 > always is.
69
70 What does this give you:
71
72 # cat /proc/sys/net/ipv4/icmp_echo_ignore_all
73
74 HTH.
75 --
76 Regards,
77 Mick