[Techtalk] Can't ping DNS
PCasper
sylph at cyber-dyne.com
Mon Apr 14 18:04:02 EST 2003
Hiya all.
Anyone who I've talked to in IRC recently knows my general situation.
Over a week ago, my ISP replaced their PPP server with one that's more
stringent about authenticating.
(I think the situation is really that the old one was sloppy, and was
replaced for reasons other than being sloppy)
So for over a week, wvdial, which worked beautifully with the sloppy
server, has not worked. I've been able to connect thru my windows
partition, but obviously, this requires rebooting, and there's just some
things I can't do right from windows.
After some poking around, I found a wonderful HOWTO on configuring pppd
in linux when you don't know exactly what the ISP wants for
authentication, and I've followed that to create chat scripts that WORK.
I can now dial, and connect. However, I'm only getting far enough to get
an IP address assigned.
Situation now is:
I can connect and check mail or web browse from windows. I can connect
from Linux, but I'm unable to ping anything other than the IP address
assigned to me... I can't even ping my DNS address. The packets are
going out, but nothing's coming back.
For the purpose of troubleshooting, I'll past in copies of the log files
I've created in the process of trying to figure this out. If anyone can
at least point me in the direction of "what's going wrong and/or what
needs to happen to fix it", I'd be most appreciative.
Start Logfiles Here
==============================
pppon (script to start pppd):
#!/bin/sh
if [ "$1" = "" ] ; then
echo "Usage: pppon username"
exit 1
fi
/usr/sbin/pppd /dev/modem 115200 user $1 connect "/usr/sbin/chat -f
home/poppy/chatscript"
==============================
chatscript:
ABORT "NO CARRIER"
ABORT "NO DIALTONE"
ABORT "ERROR"
ABORT "NO ANSWER"
ABORT "BUSY"
"" AT
OK ATDT7626000
CONNECT '\D\C'
=============================
ifconfig:
dummy0 Link encap:Ethernet HWaddr 00:00:00:00:00:00
inet addr:192.168.1.1 Bcast:192.168.1.255 Mask:255.255.255.0
UP BROADCAST RUNNING NOARP MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:0 (0.0 b) TX bytes:0 (0.0 b)
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
UP LOOPBACK RUNNING MTU:16436 Metric:1
RX packets:609 errors:0 dropped:0 overruns:0 frame:0
TX packets:609 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:66558 (64.9 Kb) TX bytes:66558 (64.9 Kb)
ppp0 Link encap:Point-to-Point Protocol
inet addr:192.168.1.1 P-t-P:207.189.172.98 Mask:255.255.255.255
UP POINTOPOINT RUNNING NOARP MULTICAST MTU:1524 Metric:1
RX packets:10 errors:0 dropped:0 overruns:0 frame:0
TX packets:112 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:3
RX bytes:481 (481.0 b) TX bytes:8208 (8.0 Kb)
==============================
route -n:
Kernel IP routing table
Destination Gateway Genmask Flags
Metric Ref Use Iface
207.189.172.98 0.0.0.0 255.255.255.255 UH 0
0 0 ppp0
192.168.1.0 0.0.0.0 255.255.255.0 U
0 0 0 dummy0
127.0.0.0 0.0.0.0 255.0.0.0 U
0 0 0 lo
0.0.0.0 0.0.0.0 0.0.0.0 U
0 0 0 ppp0
0.0.0.0 207.189.172.98 0.0.0.0 UG
0 0 0 ppp0
==============================
ping 207.189.172.1 (DNS address):
PING 207.189.172.1 (207.189.172.1) from 192.168.1.1 : 56(84) bytes of data.
--- 207.189.172.1 ping statistics ---
10 packets transmitted, 0 packets received, 100% packet loss
===============================
/var/log/messages:
Apr 14 17:44:39 bluegirl pppd[2505]: pppd 2.4.1 started by root, uid 0
Apr 14 17:45:07 bluegirl pppd[2505]: Serial connection established.
Apr 14 17:45:07 bluegirl pppd[2505]: Using interface ppp0
Apr 14 17:45:07 bluegirl pppd[2505]: Connect: ppp0 <--> /dev/modem
Apr 14 17:45:08 bluegirl pppd[2505]: local IP address 192.168.1.1
Apr 14 17:45:08 bluegirl pppd[2505]: remote IP address 207.189.172.98
Apr 14 17:47:31 bluegirl pppd[2505]: Terminating on signal 15.
Apr 14 17:47:31 bluegirl pppd[2505]: Connection terminated.
Apr 14 17:47:31 bluegirl pppd[2505]: Connect time 2.4 minutes.
Apr 14 17:47:31 bluegirl pppd[2505]: Sent 1187 bytes, received 61 bytes.
Apr 14 17:47:31 bluegirl pppd[2505]: Hangup (SIGHUP)
Apr 14 17:47:31 bluegirl pppd[2505]: Exit.
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