Re: Networking problem

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



On 05/14/11 20:53, James McKenzie wrote:
> On 5/14/11 8:42 PM, JD wrote:
>> On 05/14/11 19:41, Kevin J. Cummings wrote:
>>> On 05/14/2011 10:09 PM, JD wrote:
>>>> On 05/14/11 18:45, James McKenzie wrote:
>>>>> On 5/14/11 6:40 PM, JD wrote:
>>>>>> On 05/14/11 18:24, Joe Zeff wrote:
>>>>>>> On 05/14/2011 01:27 PM, JD wrote:
>>>>>>>> I also brought the fedora firewall down, and retried to ping Fedora
>>>>>>>> from Powerbook. No go!!
>>>>>>> That means that it's not a firewall issue.  Check your router config to
>>>>>>> see if it's set to allow pings inside the LAN.
>>>>>> Thanx!
>>>>>> I checked. The gateway has a built-in feature (program)
>>>>>> to let you ping any client on the lan (or any ip on the public net).
>>>>>> The gateway can ping both the powerbook and the fedora pc.
>>>>>> no problems there.
>>>>>> The fedora pc and the powerbook can ping the gw, and a third machine
>>>>>> connected to the GW by ethernet, and can of course ping addresses
>>>>>> on the public net.
>>>>>> They (fedora pc and powerbook) cannot ping each other!
>>>>>> Powerbook firewall is set to promiscuous mode.
>>>>>> And as I had stated earlier, I even stopped iptables on the
>>>>>> fedora pc, which puts it also in promiscuous mode (I assume).
>>>>>> Still these two machines refuse to talk.
>>>>>>
>>>>> Can you use traceroute to communicate between the two of them?
>>>>>
>>>>> James McKenzie
>>>>>
>>>> Tried it.
>>>> Tracerout is unable to get to target after 30 tries.
>>>> All it shows is asterisks.
>>> Sounds to me like traceroute is trying to go "direct" between machines....
>>>
>>> Can you add a "special" static route between the 2 specifying the router
>>> as the gateway?
>>>
>>> As I recall, LAN traffic assumes that anything sent on the local
>>> interface will get directly to anything else on the local network by
>>> just sending it.  I'm not sure why the router doesn't "route" those
>>> packets when it sees them unless it assumes that if receives them over
>>> the wireless and the target machine is also wireless, that that would be
>>> redundant.
>>>
>>> Sometimes I used to set up static routes between machines, guaranteeing
>>> that the route the packets take will get there.  something like:
>>>
>>> On machine w.x.y.2, sending to machine w.x.y.3, using the router at
>>> w.x.y.1 as the intermediary:
>>>
>>> # route add -host w.x.y.3 gw w.x.y.1 dev eth0
>>>
>>> I'm not 100% sure this will work, because if the router is at fault, it
>>> may still fail.  But its worth a try.
>>>
>> No that would not do anything because already the default route is
>> 192.168.1.254
>> which is the gateway/router.
>>
> That default route will ONLY be used if you specified the IP range as
> /32, i.e. 192.168.1.1/32.  Otherwise the system will assume /24 and
> nothing local will be able to be located (you should be able to ping
> outbound the gateway, but nothing else in that subnet.)
>
> James McKenzie
>
# route add -host 192.168.1.70 gw 192.168.1.108 dev wlan0

# ping 192.168.1.70
PING 192.168.1.70 (192.168.1.70) 56(84) bytes of data.
 From 192.168.1.108 icmp_seq=2 Destination Host Unreachable
 From 192.168.1.108 icmp_seq=3 Destination Host Unreachable
 From 192.168.1.108 icmp_seq=4 Destination Host Unreachable

Also, on the Fedora PC:

# traceroute 192.168.1.60
traceroute to 192.168.1.60(192.168.1.60), 30 hops max, 60 byte packets
  1  192.168.1.108 (192.168.1.108)  3007.379 ms !H  3007.348 ms !H  
3007.327 ms !H

and it stopped right there.
Whereas on the Powerbook, all I get is many lines of asterisks and then 
it gives up.



-- 
users mailing list
users@xxxxxxxxxxxxxxxxxxxxxxx
To unsubscribe or change subscription options:
https://admin.fedoraproject.org/mailman/listinfo/users
Guidelines: http://fedoraproject.org/wiki/Mailing_list_guidelines

[Index of Archives]     [Older Fedora Users]     [Fedora Announce]     [Fedora Package Announce]     [EPEL Announce]     [EPEL Devel]     [Fedora Magazine]     [Fedora Summer Coding]     [Fedora Laptop]     [Fedora Cloud]     [Fedora Advisory Board]     [Fedora Education]     [Fedora Security]     [Fedora Scitech]     [Fedora Robotics]     [Fedora Infrastructure]     [Fedora Websites]     [Anaconda Devel]     [Fedora Devel Java]     [Fedora Desktop]     [Fedora Fonts]     [Fedora Marketing]     [Fedora Management Tools]     [Fedora Mentors]     [Fedora Package Review]     [Fedora R Devel]     [Fedora PHP Devel]     [Kickstart]     [Fedora Music]     [Fedora Packaging]     [Fedora SELinux]     [Fedora Legal]     [Fedora Kernel]     [Fedora OCaml]     [Coolkey]     [Virtualization Tools]     [ET Management Tools]     [Yum Users]     [Yosemite News]     [Gnome Users]     [KDE Users]     [Fedora Art]     [Fedora Docs]     [Fedora Sparc]     [Libvirt Users]     [Fedora ARM]

  Powered by Linux