outgoing traffic to the internet stopped

esanchez · 09-22-2004, 12:14 PM

Hi !
I'm having a problem with my outgoing traffic to the internet
I have a slackware 10 machine with postfix/bind/apache
The machine have 2 nics, one configured with
my internal network and other with the external network
All the internal traffic work great, but I can't send packets
through my external interface.
Everybody can see my site through internet, also can
send email to my machine, but when I try to send or reply
messages to another machine outside my network I received
a connection timeout...
the behaivor is the same for telnet, ssh, ftp, also I cannot
browse the web from this machine but people can see this
machine from the internet...
any help or advice would be appreciated..
thanks in advance.
regards,
-eduardo s.m.

win32sux · 09-22-2004, 12:30 PM

are you using iptables on the machine?? could you post your script??

bathory · 09-22-2004, 12:40 PM

What you mean by

Quote:

outgoing traffic to the internet stopped

Does it worked before and stopped suddenly? Then perhaps you lost your gateway. Do a:

Code:

route add default gw xx.xx.xx.xx

where xx.xx.xx.xx is the IP of your router or whatever connects you to the net

esanchez · 09-22-2004, 01:24 PM

No, I'm not using iptables on that machine...
No iptables module is loaded in the kernel:

Code:

esanchez@linux02:~$ lsmod
Module                  Size  Used by    Not tainted
snd-pcm-oss            37736   0 (unused)
snd-mixer-oss          12504   0 [snd-pcm-oss]
uhci                   24444   0 (unused)
ehci-hcd               17580   0 (unused)
usbcore                59308   1 [uhci ehci-hcd]
snd-intel8x0           18924   0 (unused)
snd-ac97-codec         49500   0 [snd-intel8x0]
gameport                1420   0 [snd-intel8x0]
snd-pcm                56072   0 [snd-pcm-oss snd-intel8x0]
snd-timer              13604   0 [snd-pcm]
snd-page-alloc          6328   0 [snd-intel8x0 snd-pcm]
snd-mpu401-uart         3200   0 [snd-intel8x0]
snd-rawmidi            12740   0 [snd-mpu401-uart]
snd-seq-device          3888   0 [snd-rawmidi]
snd                    30852   0 [snd-pcm-oss snd-mixer-oss snd-intel8x0 snd-ac97-codec snd-pcm snd-timer snd-mpu401-uart snd-rawmidi snd-seq-device]
soundcore               3396   4 [snd]
8139too                14376   1
crc32                   2880   0 [8139too]
eepro100               19252   1
mii                     2272   0 [8139too eepro100]
pcmcia_core            39972   0
ide-scsi                9328   0
agpgart                43940   0 (unused)

esanchez · 09-22-2004, 01:29 PM

already try using:
[code]
route add default gw <my_gateway>
[code]

but before that It seems I have not lost my gateway:

Code:

esanchez@linux02:~$ netstat -rn
Kernel IP routing table
Destination        Gateway         Genmask         Flags   MSS Window  irtt Iface
216.25.167.128  0.0.0.0         255.255.255.224 U         0 0          0 eth1
10.0.0.0              0.0.0.0         255.255.0.0     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            <my_gateway>  0.0.0.0         UG        0 0          0 eth1

as a matter in fact, I can reach servers on my ISP....
another funny thing is that if I configure a Windows machine with this ip, it can browse
the internet without a problem, with Linux it can't...

was wondering if there's some kind of problem in my network configuration or the ISP
doesn't like Windows machines..
regards,