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A couple things make me suspicious. First and foremost, you appear to
have two NICs with different IP addresses on the same network. Usually
that’s a bad thing unless you are REALLY sure it is not, and even then I’d
question it.
Second, you have four nameservers listed in /etc/resolv.conf which is not,
by itself, a bad thing. What makes me suspicious is that you have the
“far” nameservers 9.x.x.x listed first and should probably have
192.168.0.1 listed first assuming your local router/modem/whatever can
handle DNS like it probably can. This is not the root problem, though,
since you cannot even ping the Internet properly by IP address. Other
tests to do:
ping 192.168.0.1
then, after turning off one NIC as shown below, try again and see if it
improves assuming it did not work before:
sudo /sbin/ifdown eth1
ping 192.168.0.1
If that works try the other ping/dig tests mentioned before. If pinging
130.57.5.70 works but pinging novell.com does not then fix your hosts file
by putting the 192.168.0.1 entry at the top of the list, or make it the
only ‘nameserver’ entry in there.
Good luck.
rneagoie wrote:
> Thank you for quick reply.
>
> I attach below the output of the commands you indicated for test.
> Sure, I issued the commands without having AT&T client running.
> In /etc/resolv.conf I have a lot of next entry (so that I list it only
> once):
> #@NETVPN_GENERATED@ – this file is generated by NetVPN
> # and will be overwritten by NetVPN
> # as long as the above mark is intact
> nameserver 9.64.163.21
> nameserver 9.64.162.21
>
> So:
>
> -----------------------------------------------------------------
> linux-9dj0:/home # ip addr
> 1: lo: <LOOPBACK,UP,LOWER_UP> mtu 16436 qdisc noqueue state UNKNOWN
> link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
> inet 127.0.0.1/8 scope host lo
> inet6 ::1/128 scope host
> valid_lft forever preferred_lft forever
> 2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast
> state UNKNOWN qlen 1000
> link/ether 00:0a:e4:b5:11:23 brd ff:ff:ff:ff:ff:ff
> inet 192.168.0.113/24 brd 192.168.0.255 scope global eth0
> inet6 fe80::20a:e4ff:feb5:1123/64 scope link
> valid_lft forever preferred_lft forever
> 3: eth1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast
> state UP qlen 1000
> link/ether 00:16:6f:25:42:02 brd ff:ff:ff:ff:ff:ff
> inet 192.168.0.111/24 brd 192.168.0.255 scope global eth1
> inet6 fe80::216:6fff:fe25:4202/64 scope link
> valid_lft forever preferred_lft forev
> ---------------------------------------------------------------
> linux-9dj0:/home # ip route
> 192.168.0.0/24 dev eth0 proto kernel scope link src 192.168.0.113
> metric 1
> 192.168.0.0/24 dev eth1 proto kernel scope link src 192.168.0.111
> metric 2
> default via 192.168.0.1 dev eth0 proto static
>
> -----------------------------------------------------------------
> linux-9dj0:/home # cat /etc/resolv.conf
> #@NETVPN_GENERATED@ – this file is generated by NetVPN
> # and will be overwritten by NetVPN
> # as long as the above mark is intact
> nameserver 9.64.163.21
> nameserver 9.64.162.21
> ### /etc/resolv.conf file autogenerated by netconfig!
> #
> # Before you change this file manually, consider to define the
> # static DNS configuration using the following variables in the
> # /etc/sysconfig/network/config file:
> # NETCONFIG_DNS_STATIC_SEARCHLIST
> # NETCONFIG_DNS_STATIC_SERVERS
> # NETCONFIG_DNS_FORWARDER
> # or disable DNS configuration updates via netconfig by setting:
> # NETCONFIG_DNS_POLICY=’’
> #
> # See also the netconfig(8) manual page and other documentation.
> #
> # Note: Manual change of this file disables netconfig too, but
> # may get lost when this file contains comments or empty lines
> # only, the netconfig settings are same with settings in this
> # file and in case of a “netconfig update -f” call.
> #
> ### Please remove (at least) this line when you modify the file!
> nameserver 193.231.189.18
> nameserver 192.168.0.1
>
> -----------------------------------------------------------------
> linux-9dj0:/home # dig novell.com
>
> ; <<>> DiG 9.6.1-P1 <<>> novell.com
> ;; global options: +cmd
> ;; connection timed out; no servers could be reached
>
> -----------------------------------------------------------------
> linux-9dj0:/home # dig -x 130.57.5.70
>
> ; <<>> DiG 9.6.1-P1 <<>> -x 130.57.5.70
> ;; global options: +cmd
> ;; connection timed out; no servers could be reached
>
> -----------------------------------------------------------------
> linux-9dj0:/home # ping -c 1 novell.com
> ping: unknown host novell.com
>
> -----------------------------------------------------------------
> linux-9dj0:/home # ping -c 1 130.57.5.70
> PING 130.57.5.70 (130.57.5.70) 56(84) bytes of data.
>
> — 130.57.5.70 ping statistics —
> 1 packets transmitted, 0 received, 100% packet loss, time 0ms
>
> -----------------------------------------------------------------
> linux-9dj0:/home # sudo /usr/sbin/iptables-save
> # Generated by iptables-save v1.4.4 on Sat Dec 19 14:56:53 2009
> *raw
> :PREROUTING ACCEPT [733:436887]
> :OUTPUT ACCEPT [852:89956]
> -A PREROUTING -i lo -j NOTRACK
> -A OUTPUT -o lo -j NOTRACK
> COMMIT
> # Completed on Sat Dec 19 14:56:53 2009
> # Generated by iptables-save v1.4.4 on Sat Dec 19 14:56:53 2009
> *filter
> :INPUT DROP [0:0]
> :FORWARD DROP [0:0]
> :OUTPUT ACCEPT [0:0]
> :forward_ext - [0:0]
> :input_ext - [0:0]
> :reject_func - [0:0]
> -A INPUT -i lo -j ACCEPT
> -A INPUT -m state --state ESTABLISHED -j ACCEPT
> -A INPUT -p icmp -m state --state RELATED -j ACCEPT
> -A INPUT -i eth0 -j input_ext
> -A INPUT -i eth1 -j input_ext
> -A INPUT -j input_ext
> -A INPUT -m limit --limit 3/min -j LOG --log-prefix "SFW2-IN-ILL-TARGET
> " --log-tcp-options --log-ip-options
> -A INPUT -j DROP
> -A FORWARD -m limit --limit 3/min -j LOG --log-prefix
> "SFW2-FWD-ILL-ROUTING " --log-tcp-options --log-ip-options
> -A OUTPUT -o lo -j ACCEPT
> -A OUTPUT -m state --state NEW,RELATED,ESTABLISHED -j ACCEPT
> -A OUTPUT -m limit --limit 3/min -j LOG --log-prefix "SFW2-OUT-ERROR "
> --log-tcp-options --log-ip-options
> -A input_ext -m pkttype --pkt-type broadcast -j DROP
> -A input_ext -p icmp -m icmp --icmp-type 4 -j ACCEPT
> -A input_ext -p icmp -m icmp --icmp-type 8 -j ACCEPT
> -A input_ext -m pkttype --pkt-type multicast -j DROP
> -A input_ext -m pkttype --pkt-type broadcast -j DROP
> -A input_ext -p tcp -m limit --limit 3/min -m tcp --tcp-flags
> FIN,SYN,RST,ACK SYN -j LOG --log-prefix "SFW2-INext-DROP-DEFLT "
> --log-tcp-options --log-ip-options
> -A input_ext -p icmp -m limit --limit 3/min -j LOG --log-prefix
> "SFW2-INext-DROP-DEFLT " --log-tcp-options --log-ip-options
> -A input_ext -p udp -m limit --limit 3/min -m state --state NEW -j LOG
> --log-prefix "SFW2-INext-DROP-DEFLT " --log-tcp-options
> --log-ip-options
> -A input_ext -j DROP
> -A reject_func -p tcp -j REJECT --reject-with tcp-reset
> -A reject_func -p udp -j REJECT --reject-with icmp-port-unreachable
> -A reject_func -j REJECT --reject-with icmp-proto-unreachable
> COMMIT
> # Completed on Sat Dec 19 14:56:53 2009
> ----------------------------------------------------------------
>
>
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