Re: mac eventually can't see the internet


Subject: Re: mac eventually can't see the internet
From: Cory Riddell (bor@c-riddell.com)
Date: Sun Sep 23 2001 - 20:53:22 EDT


Thanks for the reply. I don't think it is a hardware problem because
the mac can still see the rest of the network, just not the internet
(no http, no email). I've answered some of your questions below.

If you (or anybody on the list) can suggest other diagnostics, I
would greatly appreciate the help.

On Fri, 21 Sep 2001 19:37:14 -0400, Chip Mefford wrote:
>First, to trouble shoot the network, don't do it
>all in one bite. Turn ipchains off. Does it work?
Do you mean turn ipchains off after the mac can no longer see the
internet? I'm afraid to run without ipchains because my machine was
recently rooted. That's why this is a fresh install of RH7.1 :)

>Or does it not. If so, look there, if not,
>what are all of those collisions about?
I did a little research about the collisions and it seems the biggest
problem here is running the NICs in full duplex. I have checked all
of the cards on my network and all are running half duplex. I
downloaded Apple's duplexer extension to ensure it was running at
half duplex.

>Are you running any printers?
Yes. I have an ink-jet on the linux box that the mac can see and
print to.

>What ver OS on the mac?
8.6

>What do the logs say?
Which logs? The last part of /var/log/messages says:
Sep 23 20:00:25 porky kernel: NET4: AppleTalk 0.18a for Linux NET4.0
Sep 23 20:00:25 porky atalkd[1011]: restart (1.4b2+asun2.1.4)
Sep 23 20:00:26 porky smb: smbd startup succeeded
Sep 23 20:00:26 porky smb: nmbd startup succeeded
Sep 23 20:00:26 porky anacron: anacron startup succeeded
Sep 23 20:00:26 porky atalkd[1011]: zip_getnetinfo for eth1
Sep 23 20:00:27 porky linuxconf: Running Linuxconf hooks: succeeded
Sep 23 20:00:35 porky atalkd[1011]: zip_getnetinfo for eth1
Sep 23 20:00:45 porky atalkd[1011]: zip_getnetinfo for eth1
Sep 23 20:00:55 porky atalkd[1011]: config for no router
Sep 23 20:00:56 porky atalkd[1011]: ready 0/0/0
Sep 23 20:00:56 porky atalk: atalkd startup succeeded
Sep 23 20:01:09 porky papd[1087]: restart (1.4b2+asun2.1.4)
Sep 23 20:01:09 porky atalk: papd startup succeeded
Sep 23 20:01:09 porky atalk: afpd startup succeeded
Sep 23 20:01:15 porky papd[1087]: register HP697C:LaserWriter@*
Sep 23 20:01:15 porky afpd[1092]: porky:AFPServer@* started on
65280.178:130 (1.4b2+asun2.1.4)
Sep 23 20:01:15 porky afpd[1092]: ASIP started on 127.0.0.1:548(1)
(1.4b2+asun2.1.4)
Sep 23 20:01:15 porky afpd[1092]: uam: uams_guest.so loaded
Sep 23 20:01:15 porky afpd[1092]: uam: uams_clrtxt.so loaded
Sep 23 20:01:15 porky afpd[1092]: uam: uams_dhx.so loaded
Sep 23 20:01:15 porky afpd[1092]: uam: "DHCAST128" available
Sep 23 20:01:15 porky afpd[1092]: uam: "Cleartxt Passwrd" available
Sep 23 20:01:15 porky afpd[1092]: uam: "No User Authent" available
Sep 23 20:29:54 porky gdm(pam_unix)[1066]: session opened for user
root by (uid=0)
Sep 23 20:29:54 porky gdm[1066]: gdm_slave_session_start: root on :0
Sep 23 20:29:58 porky modprobe: modprobe: Can't locate module
sound-slot-0
Sep 23 20:29:58 porky modprobe: modprobe: Can't locate module
sound-service-0-0
Sep 23 20:30:03 porky gnome-name-server[1206]: starting
Sep 23 20:30:03 porky gnome-name-server[1206]: name server starting
Sep 23 20:30:04 porky kernel: hdc: ATAPI 8X CD-ROM drive, 128kB
Cache, DMA
Sep 23 20:30:04 porky kernel: Uniform CD-ROM driver Revision: 3.12

Thanks,
cory

>On 2001.09.21 18:26 Cory Riddell wrote:
>> I have a 3-machine network. My server/firewall is a RH7.1
>> machine
>> (basicaly a fresh install). It has two NICs. eth0 goes
>> to the
>> internet and eth1 connects to my two other machines (pc
>> and an iMac).
>> I ran lokkit, selected high security and marked eth1 as a
>> trusted
>> device. Then:
>> ipchains -P forward DENY
>> ipchains -A forward -i eth0 -j MASQ
>> and ip_forward is on.
>>
>> I've also setup Samba for the PC and
>> netatalk-1.4b2+asun2.1.4-0.i368.rpm. The pc works
>> flawlessly. The
>> iMac works great for a while (internet, printing on a
>> printer
>> connected to the server, etc..) But after 5-30 minutes,
>> the mac is
>> no longer able to see the internet. I can still ping the
>> mac and the
>> mac can still see a shared directory on the linux box, but
>> it cannot
>> see the internet. No http, and no email.
>>
>> Any ideas? How do I go about diagnosing a problem like
>> this?
>>
>> ifconfig tells me:
>> eth0 Link encap:Ethernet HWaddr XX:XX:XX:XX:XX:XX
>> inet addr:XX.XX.XX.XX Bcast:XX.XX.XX.255
>> Mask:255.255.255.0
>> UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
>> RX packets:121781 errors:0 dropped:0 overruns:0
>> frame:0
>> TX packets:4935 errors:0 dropped:0 overruns:0
>> carrier:0
>> collisions:171
>> eth1 Link encap:Ethernet HWaddr XX:XX:XX:XX:XX:XX
>> inet addr:192.168.0.1 Bcast:192.168.0.255
>> Mask:255.255.255.0
>> EtherTalk Phase 2 addr:65280/178
>> UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
>> RX packets:120865 errors:0 dropped:0 overruns:0
>> frame:0
>> TX packets:4831 errors:0 dropped:0 overruns:0
>> carrier:0
>> collisions:666
>> lo Link encap:Local Loopback
>> inet addr:127.0.0.1 Mask:255.0.0.0
>> EtherTalk Phase 2 addr:0/0
>> UP LOOPBACK RUNNING MTU:16436 Metric:1
>> RX packets:6 errors:0 dropped:0 overruns:0 frame:0
>> TX packets:6 errors:0 dropped:0 overruns:0 carrier:0
>> collisions:0
>>
>> Please help!
>> Thanks,
>> Cory
>>

-- 
Cory Riddell, bor@c-riddell.com on 09/23/2001



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