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 Post subject: [solved] - tcp/ip stack problem.
PostPosted: Wed Dec 20, 2017 7:06 pm 
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Hi, all, I have a small problem with my OS trying to make icmp reply
I have a virtualbox box on my linux deepin running my OS.

then I go to the terminal from linux and type ex. ip of my OS from DHCP is 192.168.1.134.

I type 192.168.1.134.

I have a reply from my os, but with odd time messages. below I'll send a picture of it...

please could anyone help me please?

tnx so much.


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File comment: Odd messages
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Last edited by digo_rp on Fri Dec 22, 2017 10:49 am, edited 1 time in total.
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 Post subject: Re: tcp/ip stack problem.
PostPosted: Wed Dec 20, 2017 10:36 pm 
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Location: Maadi, Cairo, Egypt
Post a Wireshark capture dump of the network packets.

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Working on a new Unix clone.
You know your OS is advanced when you stop using the Intel programming guide as a reference.


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 Post subject: Re: tcp/ip stack problem.
PostPosted: Thu Dec 21, 2017 5:51 am 
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Man, I really don't know how to do that, could you explain to me, please?


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 Post subject: Re: tcp/ip stack problem.
PostPosted: Thu Dec 21, 2017 9:52 am 
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digo_rp wrote:
Man, I really don't know how to do that, could you explain to me, please?
Open wireshark and select the same network/device to capture on as your VM is using, and maybe also set your filter in wireshark to only show ICMP packets for readability.

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 Post subject: Re: tcp/ip stack problem.
PostPosted: Thu Dec 21, 2017 11:04 am 
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Also, are you properly converting to and from network byte order?


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 Post subject: Re: tcp/ip stack problem.
PostPosted: Thu Dec 21, 2017 3:15 pm 
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tnx so much for your help...
Here is the file to download: https://expirebox.com/download/b325c855 ... 447bc.html
please could anyone help me again...

thx a lot.


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 Post subject: Re: tcp/ip stack problem.
PostPosted: Thu Dec 21, 2017 3:17 pm 
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davidv1992, I'll check that out. tnx so much


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 Post subject: Re: tcp/ip stack problem.
PostPosted: Thu Dec 21, 2017 3:47 pm 
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now I got icmp working ... thx so much guys.

The problem was in icmp_reply function, I'was'nt send back the data correctly.

thx so much...


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