Re: a crazy connectivity issue. unable to ping anything

On 8/14/07, Jude DaShiell <jdashiel@shellworld.net> wrote:

Oh, I know how to make that happen.  Just put the dsl or router's
configuration address in the /etc/resolv.conf file as the search domain
and clear out the servers in that file.  Could be your router or modem was
told by your provider or manufacturer that it needs a firmware update.
Another possibility may be a malware.  If the second is the case try
downloading the dban iso file with another computer and burning it on a cd
that can be burnt only once.  When you put the cd in, a boot: prompt comes
up so type autonuke <cr> and if you have a 300GB hard drive expect dban to
take a day to restore it to the state it was in before the first operating
system was put on it.  http://dban.sf.net is the url.  A guess on my part
is 192.168.1.1 will get you to your modem or router manufacturer's web
page for configuration.  If you had to use another address to do this, try
it.  If it doesn't work, you got a malware and need dban.  You if you're
using a dsl modem also need something like a westel 227W set up correctly
so when you check with grc.com's shields up you're told you're truely
stealthed.

On Tue, 14 Aug 2007, Michael Habashy wrote:

> Hi -i got a crazy connectivity issue on my hands.
> THis machine was running fine for about a month or so --then i lost
> connectivity.
> I have no errors to tell me what is going on.
> i have switched the built-in nic on the motherboard and the hub ports
> --there are other devices that working fine.
> I have disabled a lot of services..and trying to get bear vinalla as
> possible.
> I can not ping to any other host..then just my local interface.
> THe last things done were to install courier-imap and courier-ssl.
> i was sending an email  to the box..and bam..there is notthing there..
>
> the interfaces initialize just fine..but do not talk to anythhign...i have
> apache and other apps running..and their ports are open..just not talking to
> anyone outside the box...and yes..there is no iptables or ipchains..
> I am running out of options..and do not want to rebuild box...so help!!!!!!
> here are the ifconfig and netstat:
>
>
> eth0      Link encap:Ethernet  HWaddr 00:E0:81:74:60:6A
>          inet addr: 192.168.2.22  Bcast:192.168.2.255  Mask:255.255.255.0
>          inet6 addr: fe80::2e0:81ff:fe74:606a/64 Scope:Link
>          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
>          RX packets:86 errors:0 dropped:0 overruns:0 frame:0
>          TX packets:164 errors:0 dropped:0 overruns:0 carrier:0
>          collisions:0 txqueuelen:1000
>          RX bytes:6985 (6.8 KiB)  TX bytes:9962 (9.7 KiB)
>          Interrupt:50
>
> eth1      Link encap:Ethernet  HWaddr 00:E0:81:74:60:6B
>          inet addr: 192.168.2.12  Bcast:192.168.2.255  Mask:255.255.255.0
>          UP BROADCAST MULTICAST  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:1000
>          RX bytes:0 (0.0 b)  TX bytes:0 (0.0 b)
>          Interrupt:58 Base address:0x2000
>
> lo        Link encap:Local Loopback
>          inet addr:127.0.0.1  Mask:255.0.0.0
>          inet6 addr: ::1/128 Scope:Host
>          UP LOOPBACK RUNNING  MTU:16436  Metric:1
>          RX packets:139 errors:0 dropped:0 overruns:0 frame:0
>          TX packets:139 errors:0 dropped:0 overruns:0 carrier:0
>          collisions:0 txqueuelen:0
>          RX bytes:10919 (10.6 KiB)  TX bytes:10919 (10.6 KiB)
>
> sit0      Link encap:IPv6-in-IPv4
>          NOARP  MTU:1480  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)
>
> Kernel IP routing table
> Destination     Gateway         Genmask         Flags   MSS Window  irtt
> Iface
> 192.168.2.0     0.0.0.0         255.255.255.0   U         0 0          0
> eth0
> 192.168.2.0     0.0.0.0         255.255.255.0   U         0 0          0
> eth1
> 0.0.0.0         192.168.2.1     0.0.0.0         UG        0 0          0
> eth1
> 0.0.0.0         192.168.2.1     0.0.0.0         UG        0 0          0
> eth0
>