Displaying 2 results from an estimated 2 matches for "trivial_file_transfer_protocol#".
2018 Mar 28
2
tftpd server S not responding
...a tftpd server S running on centos 7 and managed by systemd
It is not respoding to A server which is sending the tftp read request RRQ.
I do see the RRQ packets coming from A to S, but S never responds back from
a different port Y to A
So this part is working fine
https://en.wikipedia.org/wiki/Trivial_File_Transfer_Protocol#/media/File:Tftp-rrq.svg
But I do not see any attempts to even send a data packet back in my packet
capture running on S
So this event is not occuring, as if my tftpd server is dead. I have the
firewalld turned off on S to eliminate
the possibility that firewalld blocking those packets from reeac...
2018 Mar 28
0
tftpd server S not responding
...om> wrote:
> It is not respoding to A server which is sending the tftp read request RRQ.
>
> I do see the RRQ packets coming from A to S, but S never responds back from
> a different port Y to A
>
> So this part is working fine
>
>
>
> https://en.wikipedia.org/wiki/Trivial_File_Transfer_Protocol#/media/File:Tftp-rrq.svg
>
> But I do not see any attempts to even send a data packet back in my packet
> capture running on S
Are A and S on different IP subnets?
Does S have a second IP on the SAME subnet as A?
Any ASA or other firewalls between the two?
If so this is expected behavior...