RE: Fedora core 1 sendmail problems

[Homer Sapions]

Thanks Alexander, I may contact you again to help with testing directly. The 
problem is that my ISP has bound my IP address to the MAC address of the 
first PC I attached. I can get it changed, but it may take 4 - 8 hours, so I 
have just set the linksys to masquerade as the first PCs MAC address. If I 
now bypass the linksys, the cable modem will see the MAC address of my Linux 
server and not allow me access to the internet. I have another idea based on 
what somebody else (Bob?) suggested. I have a hub. I will disconnect one of 
my Windows PCs from the Linksys and connect it to the hub. Then I will 
connect the hub to the linksys incomig port so that the PC will effectively 
be on the outside of the LinkSys. That way I can eliminate the linksys from 
the equation and narrow it to just the cable modem and the ISP. As I said, I 
don't know of a way to reconfigure the cable modem, if it is even possible. 
I had never considered that as an option. It is a Motorola Surfboard SB4100 
- I'll see if I can find any books I got with it, or search online.

it is possible the ISP began filtering, but it would be a coincidence if 
they started about the time I began upgrading to Fedora, or within the first 
few days when I was testing and did not notice the absence of mail. Another 
thought too - my linksys had an old firmware. I just managed to get some 
help from linksys tonight in locating the correct firmware and upgrading, I 
had 2 apply 2 updates. The first preserved all my settings, the second 
trashed them all, so I had to set it up again.

It does look as though the ISP may be blocking some incoming SMTP traffic in 
some fashion, but not fully, s I did see the connections, yet the return 
handshake did not go back out, and I can still send mail. I am not aware of 
having changed anything on the linksys, but anything is possible.

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Fedora core 1 sendmail problems

[roger2]

On Tue, 30 Mar 2004 22:35:59 -0500, Homer Sapions <hsapions(a)hotmail.com&gt; 
wrote:

>  Thanks Alexander, I may contact you again to help with testing
> directly. 
>  The problem is that my ISP has bound my IP address to the MAC address of 
>  the first PC I attached. I can get it changed, but it may take 4 - 8 
>  hours, so I have just set the linksys to masquerade as the first PCs MAC 
>  address. 
So in effect if I read you right you have the same MAC address in 2
places.
Might not be part of this problem but not best practice.
Think about geting the IP bound to the routers MAC address.
Regards Roger

Using M2, Opera's revolutionary e-mail client: http://www.opera.com/m2/

Fedora core 1 sendmail problems

[Tom Mitchell]

On Wed, Mar 31, 2004 at 10:42:30AM +0100, roger2 wrote:
>  On Tue, 30 Mar 2004 22:35:59 -0500, Homer Sapions
> <hsapions(a)hotmail.com&gt; 
>  wrote:
>  
>  >Thanks Alexander, I may contact you again to help with testing directly. 
>  >The problem is that my ISP has bound my IP address to the MAC address of 
>  >the first PC I attached. I can get it changed, but it may take 4 - 8 
>  >hours, so I have just set the linksys to masquerade as the first PCs MAC 
>  >address. 
>  So in effect if I read you right you have the same MAC address in 2
> places.
>  Might not be part of this problem but not best practice.
>  Think about geting the IP bound to the routers MAC address.
>  Regards Roger 
Both Linux and linksys can have their MAC address set/changed.

As long as you do not duplicate a MAC address on a broadcast domain
all should be ok.

Last I checked if you WEB connect to the linksys from the PC that you first
connected to your ISP with there should be an easy to use page where
the linksys will all but ask you to "present" the MAC address of your 
PC to your ISP.   Look at the wan side not the lan side config pages.

Make sure you set a passwd on the linksys.


-- 
	T o m  M i t c h e l l 
	/dev/null the ultimate in secure storage.

Fedora core 1 sendmail problems

[Alexander Dalloz]

Am Mi, den 31.03.2004 schrieb Homer Sapions um 05:35:

>  Thanks Alexander, I may contact you again to help with testing
> directly. The 
>  problem is that my ISP has bound my IP address to the MAC address of the 
>  first PC I attached. I can get it changed, but it may take 4 - 8 hours, so I 
>  have just set the linksys to masquerade as the first PCs MAC address. If I 
>  now bypass the linksys, the cable modem will see the MAC address of my Linux 
>  server and not allow me access to the internet. I have another idea based on 
>  what somebody else (Bob?) suggested. I have a hub. I will disconnect one of 
>  my Windows PCs from the Linksys and connect it to the hub. Then I will 
>  connect the hub to the linksys incomig port so that the PC will effectively 
>  be on the outside of the LinkSys. That way I can eliminate the linksys from 
>  the equation and narrow it to just the cable modem and the ISP. As I said, I 
>  don't know of a way to reconfigure the cable modem, if it is even possible. 
>  I had never considered that as an option. It is a Motorola Surfboard SB4100 
>  - I'll see if I can find any books I got with it, or search online. 
You can easily modify the MAC address of your NIc with following
command:

ifconfig hw ether 00:D0:B6:D2:14:4E

(MAC above is a sample)

Alexander
 

-- 
Alexander Dalloz | Enger, Germany | GPG key 1024D/ED695653 1999-07-13
Fedora GNU/Linux Core 1 (Yarrow) on Athlon CPU kernel 2.4.22-1.2174.nptl
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                   [ Γνωθι σ'αυτον - gnothi seauton ]
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