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RE: RHEL6 - TFTP Timeout



Following is the response for your suggestion while tftp server & client are running, it seems that port is fine..

[root localhost tftpboot]# lsof -i | grep tftp
xinetd    4094    root    5u  IPv4  28956      0t0  UDP *:tftp 
xinetd    4094    root    8u  IPv4  28958      0t0  UDP *:tftp 
tftp      7293    root    3u  IPv4  41470      0t0  UDP *:38633 

[root localhost tftpboot]# netstat -an | grep udp
udp        0      0 0.0.0.0:38633               0.0.0.0:*                               
udp        0      0 0.0.0.0:5353                0.0.0.0:*                               
udp        0      0 0.0.0.0:875                 0.0.0.0:*                               
udp        0      0 0.0.0.0:111                 0.0.0.0:*                               
udp        0      0 0.0.0.0:2049                0.0.0.0:*                               
udp        0      0 155.101.91.255:137          0.0.0.0:*                               
udp        0      0 155.101.90.30:137           0.0.0.0:*                               
udp        0      0 0.0.0.0:137                 0.0.0.0:*                               
udp        0      0 155.101.91.255:138          0.0.0.0:*                               
udp        0      0 155.101.90.30:138           0.0.0.0:*                               
udp        0      0 0.0.0.0:138                 0.0.0.0:*                               
udp        0      0 0.0.0.0:44305               0.0.0.0:*                               
udp        0      0 0.0.0.0:38172               0.0.0.0:*                               
udp        0      0 0.0.0.0:800                 0.0.0.0:*                               
udp        0      0 0.0.0.0:676                 0.0.0.0:*                               
udp        0      0 0.0.0.0:48438               0.0.0.0:*                               
udp        0      0 0.0.0.0:68                  0.0.0.0:*                               
udp        0      0 0.0.0.0:69                  0.0.0.0:*                               
udp        0      0 0.0.0.0:69                  0.0.0.0:*                               
udp        0      0 0.0.0.0:48483               0.0.0.0:*                               
udp        0      0 :::111                      :::*                                    
udp        0      0 :::676                      :::*                                    
udp        0      0 :::54458                    :::*                                    
udp        0      0 :::34505                    :::*                                    


Best Regards,
Jignesh Shah


-----Original Message-----
From: redhat-list-bounces redhat com [mailto:redhat-list-bounces redhat com] On Behalf Of Georgios Magklaras
Sent: Thursday, July 21, 2011 9:17 AM
To: General Red Hat Linux discussion list
Subject: Re: RHEL6 - TFTP Timeout

On 07/21/2011 01:45 PM, Jignesh Shah emerson com wrote:
> Hi Amit,
>
> Thanks for the response.
>
> To verify the ports, I already performed TFTP data transfer between TFTP Server running on windows machine and TFTP client running on Linux machine successfully.
>
> So I believe port is not blocked. Still, I can verify...

If IPTABLES (or other routing/firewall issue) is not blocking access to 
UDP port 69, when you start the TFTP server on Linux, does it really 
listen to the port (if you issue a netstat -an, do you see something on 
udp, also lsof -i | grep tftp)?'

GM

-- 
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George Magklaras PhD
RHCE no: 805008309135525

Senior Systems Engineer/IT Manager
Biotek Center, University of Oslo
EMBnet TMPC Chair

http://folk.uio.no/georgios

Tel: +47 22840535

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