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dialup modem problem with internet connection


Guest DoctorGordon
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Guest DoctorGordon

Howdy,

 

I have had several problems since moving to an acpi box, and this is probably another related issue. I also have a Linuxant HCF modem driver.

 

I can log in to my provider correctly, and see an internet connection established thru ppp0, BUT

1) I cannot ping any address on the internet,

2) Firefox cannot find any of its addresses such as mandriva.com

3) Essentially no data transfer is going on ....

 

On my older box without acpi, under 10.1, I was able to log in to my ISP, AND get on the internet with the same Connexant modem.

 

Any ideas of what could be going on?

 

TIA

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Guest DoctorGordon

[root@localhost ~]# route

Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref    Use Iface
63.215.29.17    *               255.255.255.255 UH    50     0        0 ppp0
127.0.0.0       *               255.0.0.0       U     0      0        0 lo

 

 

In addition, kppp statistics after 9 minutes report:

2034 bytes in 87 bytes out after trying to ping "unknown host"

local address noted as 4.253.10.5

 

I am just now trying to get the modem working in Mandriva 2005 LE

with no firewall and low security setting on installation

& Trying to run as root to make sure access is not a problem

 

==============================

/etc/resolv.conf:

domain wans.yahoo.com #kppp temp entry

nameserver 193.83.19.241

nameserver 193.83.19.244

nameserver 198.83.19.241 #kppp temp entry

nameserver 198.83.19.244 #kppp temp entry

nameserver 209.244.0.3 # ppp temp entry

nameserver 209.244.0.4 # ppp temp entry

 

==============================

/etc/ppp/resolv.conf:

nameserver 209.244.0.3

nameserver 209.244.0.4

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[root@localhost ~]# route

Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref    Use Iface
63.215.29.17    *               255.255.255.255 UH    50     0        0 ppp0
127.0.0.0       *               255.0.0.0       U     0      0        0 lo

Well, the route command output above shows that you have no default route to the Internet. There should be another line, like the following:

default         63.215.29.17  0.0.0.0         UG    0      0        0 ppp0

 

So kppp is not configured properly. Try the following:

 

Edit the kppp entry for your dialup ISP. There is a Gateway tab. There is a checkbox for Assign the default route to this gateway. Make sure that's checked. In the Configuration frame on this Gateway tab, the radio button setting should be set to Default Gateway.

 

You are getting domain name resolution, so that's good. It may be that the default route is the only missing link that you need.

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Guest DoctorGordon

Welll ... it still won't go anywhere else!

 

[root@localhost ~]# route

 Kernel IP routing table 
Destination     Gateway         Genmask         Flags Metric Ref    Use Iface 
209.247.21.55   *               255.255.255.255 UH    50     0        0 ppp0 
127.0.0.0       *               255.0.0.0       U     0      0        0 lo 
default         209.247.21.55   0.0.0.0         UG    50     0        0 ppp0

 

and, With default gateway assigned ...

 

/etc/resolv.conf:

domain wans.yahoo.com #kppp temp entry

nameserver 193.83.19.241

nameserver 193.83.19.244

nameserver 198.83.19.241 #kppp temp entry

nameserver 198.83.19.244 #kppp temp entry

nameserver 209.244.0.3 # ppp temp entry

nameserver 209.244.0.4 # ppp temp entry

 

/etc/ppp/resolv.conf:

nameserver 209.244.0.3

nameserver 209.244.0.4

 

and, pinging:

[root@localhost ~]# ping 4.227.114.98

PING 4.227.114.98 (4.227.114.98) 56(84) bytes of data.

64 bytes from 4.227.114.98: icmp_seq=1 ttl=64 time=0.049 ms

64 bytes from 4.227.114.98: icmp_seq=2 ttl=64 time=0.049 ms

64 bytes from 4.227.114.98: icmp_seq=3 ttl=64 time=0.047 ms

 

but pinging elsewhere is impossible:

[root@localhost ~]# ping 193.83.19.241

PING 193.83.19.241 (193.83.19.241) 56(84) bytes of data.

From 4.227.114.98 icmp_seq=1 Destination Host Unreachable

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I also get Destination Host Unreachable trying to ping 193.83.19.241, so that's inconclusive. They're probably just blocking ping requests.

 

Why the three separate sets of DNS servers (193..., 198..., and 209...)? The repeated values for 193... and 198... especially look suspicious, with only the first octet being different.

 

nameserver 193.83.19.241

nameserver 193.83.19.244

nameserver 198.83.19.241 #kppp temp entry

nameserver 198.83.19.244 #kppp temp entry

 

Presumably, from /etc/ppp/resolv.conf, your ISP's DNS servers are:

 

/etc/ppp/resolv.conf:

nameserver 209.244.0.3

nameserver 209.244.0.4

 

Very possibly those 193... and 198... initial entries in /etc/resolv.conf are interfering with the DNS lookup to your ISP's DSN servers at 209... Thus, preventing you from getting name resolution and hence being unable to surf.

 

I would clear those 193... and 198... entries, assuming they are incorrect.

 

I also suggest that in the kppp configuration for the DNS tab, you try Automatic for the Configuration and check the box for Disable Existing DNS Servers During Connection.

 

If that doesn't work, and you know for sure what your ISP DNS IPs are, then you could check the Manual Configuration button and enter those IPs.

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Guest DoctorGordon

jboy:

:oops:

I had to work a bit for a living, but am back to Linux-tweaking for the holiday in case anyone else is there today ...

 

Thanks for catching my "misspelling", but that doesn't seem to be my main problem.

I had mis-entered the addresses in the gui Mandrake (connect-drak??) internet connection tool... which seems to be amendable but not deleteable. I could not find the xml(?) configuration files for it to change by hand.

 

So now my names all agree, although there are multiple repititions:

 

/etc/resolv.conf:

nameserver 198.83.19.241

nameserver 198.83.19.244

 

nameserver 198.83.19.241

nameserver 198.83.19.244

nameserver 198.83.19.241 #kppp temp entry

nameserver 198.83.19.244 #kppp temp entry

 

/etc/ppp/resolv.conf:

nameserver 209.244.0.3

nameserver 209.244.0.4

 

I tried changing the kppp configuration for the DNS tab, Automatic for the Configuration and Disable Existing DNS Servers During Connection, but doesn't seem to work any differently.

These ISP DNS IPs work under the OTHER Operating System (XP-type), so except for misspellings this should have been an easy task.

 

:help:

So what else can I look at to see why I'm not going anywhere???

Edited by DoctorGordon
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  • 3 weeks later...
Guest DoctorGordon

PLEASE MARK THIS QUESTION SOLVED ...

Well I tried to reconfigure the resolv.conf files by hand and had to end up reinstalling Mandriva 2005LE operating system (kept my /home directory intact).

 

I am now coming to you LIVE and not by way of that other operating system :drum:

 

my working /etc/resolv.conf:

domain localdomain #kppp temp entry

nameserver 198.83.19.241 #kppp temp entry

nameserver 198.83.19.244 #kppp temp entry

nameserver 209.244.0.3 # ppp temp entry

nameserver 209.244.0.4 # ppp temp entry

 

and /etc/ppp/resolv.conf:

nameserver 209.244.0.3

nameserver 209.244.0.4

 

and route:

Kernel IP routing table

Destination Gateway Genmask Flags Metric Ref Use Iface

nas47.2ar1.Leve * 255.255.255.255 UH 50 0 0 ppp0

127.0.0.0 * 255.0.0.0 U 0 0 0 lo

default nas47.2ar1.Leve 0.0.0.0 UG 50 0 0 ppp0

 

I suspect there were some hidden conflicts caused by my initial typos on installing the modem with the wrong nameservers in the mandriva configuration files.

Maybe it was just my change to allowing the domain name to be set automatically instead of providing my own name for the ISP?

 

Thanks all who answered me! :thanks:

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