Scapy Server Unreachable error with TRex GUI 4.4

[Praveen Rai]

Hello Experts,

I am trying my hand on TRex Docker version 2.41. everything works fine till I used Console. but whenever I try to use TRex Gui I am facing Scapy server unreachable error, due to this I am not able to use TRex GUI advance mode. Normal mode works fine.

I set up my docker image as per documentation available on the website. Port mapping for GUI also done properly. the node also reachable from DUT to TRex getting this error don't know why.

-Praveen

[Praveen Rai]

LOG For Reference:--

[hanoh haim]

Check firewall configuration 

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Hanoh

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[Yaroslav Brustinov]

Hi,

1. Which command are you using to run TRex?
   
2. Which command are you using to run docker? Are you doing port forwarding for all 3 needed ports?
   
   

Thanks,

Yaroslav.

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[Praveen Rai]

Thanks, Hanoh for the suggestion. I tried with stopped firewall service in windows.apart from this there is no firewall or antivirus app running on the machine still getting same issue.

-Praveen

[Praveen Rai]

Hi Yaroslav.

I am using ./t-rex-64 -i to start TRex in interactive mode on docker container. I did forwarding as given in TRex Docker Manual.

"docker run --rm -it --privileged --cap-add=ALL -p 4500:4500 -p 4501:4501 -p 4507:4507 trexcisco/trex:latest"  

-Praveen

On Monday, 6 August 2018 12:00:17 UTC+5:30, y.brustinov wrote:

Hi,

1. Which command are you using to run TRex?
   
2. Which command are you using to run docker? Are you doing port forwarding for all 3 needed ports?
   
   

Thanks,

Yaroslav.

On Sun, Aug 5, 2018 at 10:29 PM, Praveen Rai <raipra...@gmail.com> wrote:

LOG For Reference:--

On Monday, 6 August 2018 00:24:35 UTC+5:30, Praveen Rai wrote:

Hello Experts,

I am trying my hand on TRex Docker version 2.41. everything works fine till I used Console. but whenever I try to use TRex Gui I am facing Scapy server unreachable error, due to this I am not able to use TRex GUI advance mode. Normal mode works fine.

I set up my docker image as per documentation available on the website. Port mapping for GUI also done properly. the node also reachable from DUT to TRex getting this error don't know why.

-Praveen

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[Yaroslav Brustinov]

Hi,

Could you run this as root from inside docker?

netstat -nltp

Also, could you verify that docker with TRex & scapy server is actually 192.168.10.2?

For example, while connected to server from GUI, shutdown the server inside docker to see if GUI disconnects.

Thanks,

Yaroslav.

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[Praveen Rai]

Hi,

thanks for the response.

here is output 

[root@TRex v2.41]# netstat -nltp

Active Internet connections (only servers)

Proto Recv-Q Send-Q Local Address           Foreign Address         State       PID/Program name    

tcp        0      0 0.0.0.0:4507            0.0.0.0:*               LISTEN      229/python      

-Praveen

[Praveen Rai]

Hi Yaroslav,

I shared output any help to fix this issue.

[Yaroslav Brustinov]

Hi,

Could you verify what I wrote in second part of mail?

Thanks,

Yaroslav.

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[hanoh haim]

I've verified that GUI 4.4.0 and latest docker images work together with no issue 

try to check the open ports, 4501/4507/4500 should be opened in the server 

the command in the  manual works

Hanoh

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[Anton Kiselev]

Hi Praveen,

make sure you're connecting to the correct IP as Yaroslav suggested. stop the container and ensure trex also stopped working.

If 192.168.10.2 is a VM make sure you also have port forwarding there for 4507 port(scapy).

Other than that here are some hints to test:

you can do tcpdump from the container to see if the connection goes to the container:

sudo docker exec -i -t my_trex_container tcpdump -i eth0 -e -n -l port 4507

also you can try to manually connect to that TCP port with any telnet/terminal or simple nc/netcat tool.

you won't see any prompt or output(that's a zmq port), but the TCP connection itself should be fine.

nc -v  192.168.10.2 4507

...

Connection to aastha.cisco.com port 4507 [tcp/*] succeeded!

Thanks,

Anton

вт, 7 авг. 2018 г. в 15:46, hanoh haim <hhaim...@gmail.com>:

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[rmohamm...@gmail.com]

I am posting my question in middle of existing conversation since it is related same query. I am also unable to open GUI connection to Trex server.

I applied these commands as well on Trex server.
firewall-cmd --zone=public --add-port=4500/tcp
firewall-cmd --zone=public --add-port=4501/tcp
firewall-cmd --zone=public --add-port=4507/tcp
Still getting no response from server.

Any suggestions ?