Networking Forums

Networking Forums > Computer Networking > Linux Networking > MAC address verification in replies

Reply
Thread Tools Display Modes

MAC address verification in replies

 
 
webposter
Guest
Posts: n/a

 
      06-25-2004, 07:00 PM
Hi,

Does the Linux Network Stack do MAC address verification for
REPLY packets. For example, lets say a client "C" sends a packet
to server "S" as:

REQUEST = {MAC_c, MAC_s, IP_c, IP_s, PORT_c, PORT_s}.

The client obtains MAC_s from its routing table (which internally
does an ARP request to associate IP_s with MAC_s in the ARP cache).

Will Linux drop a reply from the server (IP_s) if the source MAC
address in the reply is different than MAC_s, for example:

REPLY = {MAC_x, MAC_c, IP_s, IP_c, PORT_s, PORT_c}

MAC_x not equal to MAC_s

thanks
 
Reply With Quote
 
 
 
 
Allen Kistler
Guest
Posts: n/a

 
      06-25-2004, 08:13 PM
webposter wrote:
> Hi,
>
> Does the Linux Network Stack do MAC address verification for
> REPLY packets. For example, lets say a client "C" sends a packet
> to server "S" as:
>
> [snip]
>
> thanks


No. Read up on ARP poisoning if you're interested. Then again, maybe
that's why you were asking in the first place?

 
Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
linux system is asked for mac address of eth0 and replies withaddress of eth1 - how come? Andreas Stallmann Linux Networking 13 05-07-2009 11:20 AM
Stop Verification of Mapped Network Drives Jason Blake Windows Networking 2 05-06-2009 03:07 AM
unusual replies ? clatch22@gmail.com Network Routers 1 01-24-2009 04:01 PM
When I ping another machine, it replies from my ip address and fails Newbie Wireless Networks 1 08-13-2008 05:31 AM
Kerberos subsystem encountered a PAC verification failure. EVENT Dan S Windows Networking 0 07-25-2006 04:31 PM



1 2 3 4 5 6 7 8 9 10 11