A networking problem

[Raymond Russell]

One of our remote office is serviced by cable and a VPN box.  The Cisco VPN would not work with the cable company modem.  The cable company seemed to be aware of the problem and replaced the modem with a different brand and the connection worked right away.  Maybe the modem just does like Cisco/Linksys products.



On Apr 26, 2012, at 6:15 PM, Lonni J Friedman wrote:

> Have you verified that the cable modem has the newest firmware?
> 
> On Thu, Apr 26, 2012 at 2:28 PM, Vu Pham <vu at sivell.com> wrote:
>> On 04/26/2012 01:47 PM, Sean Keating wrote:
>>> So you have to ask what is the difference between the routers and the
>>> linux box. Are you testing with the same cables in all situations? Are
>>> the routers doing any firewalling or packet filtering? Can you get your
>>> hands on another brand of router to see if there is a difference?
>>> 
>> 
>> Sean,
>> 
>> Turning on/off the router firewall does not help.
>> 
>> Using another brand of router will be my last choice because I have a
>> bunch of routers here. Unfortuantely they are all Linksys/Cisco. I may
>> have to try a real Cisco router instead of the "home" version.
>> 
>> 
>> Thanks,
>> 
>> Vu
>> 
>> 
>>> On Thu, 2012-04-26 at 07:11 -0500, Vu Pham wrote:
>>>> I need your advice !!!
>>>> 
>>>> Recently my home network is pretty slow when accessing the Internet .
>>>> Contacting the ISP's support shows the problem is my Linksys (E3000)
>>>> router. Their tests are:
>>>> - connecting the PCs directly to the ISP cable modem ( a Motorola )
>>>> shows the bandwidth as high as expected.
>>>> - connecting the PCs to my router, which connects to the modem, shows
>>>> the bandwidth is pretty low.
>>>> 
>>>> So I got another router (E4200) to test but it shows the same pattern:
>>>> slow with router, fast with modem only.
>>>> 
>>>> I do not believe that both routers are bad so I install a Linux server
>>>> that acts as a router between the Linksys router and the modem. The
>>>> purpose is to check the packets and bandwidth from the router.
>>>> 
>>>> Well, now all my PCs (wireless or wired) behind the Linksys router
>>>> access the Internet as fast as when I connect them directly to the modem.
>>>> 
>>>> How can this be ? Some kind of conflicting between the Linksys routers
>>>> and the modem ?
>>>> 
>>>> 
>>>> Thanks,
>>>> Vu
>>>> _______________________________________________
>>>> Linux-users mailing list
>>>> Linux-users at linux-sxs.org
>>>> http://mailman.celestial.com/mailman/listinfo/linux-users
>>> 
>>> 
>> 
>> _______________________________________________
>> Linux-users mailing list
>> Linux-users at linux-sxs.org
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> 
> 
> 
> -- 
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> L. Friedman                                    netllama at gmail.com
> LlamaLand                       https://netllama.linux-sxs.org
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