Forum Discussion

suthomas1's avatar
suthomas1
Icon for Cirrostratus rankCirrostratus
May 24, 2019

connection consistency

Hello,   Some users are complaining about their connection dropping off in some attempts. They also experience logout issues,where after a while of logging in to a portal they are suddenly kicked...
application delivery
BIG-IP
LTM
youssef1's avatar
youssef1
Icon for Cumulonimbus rankCumulonimbus
May 24, 2019

Hello,

 

You should be able to reproduce the problem. It will be easier to investigate.

You can capture traffic of a specific user using TCPDUMP.

 

Or you can also use my Irule:

https://devcentral.f5.com/s/articles/ultimate-irule-debug-capture-and-investigate-1183

 

It will allow you to see if you receive an abnormal behavior, unwanted response (503, 403, ...).

 

otherwise for a user who is frequently impacted, modify his host file to attack the server directly. and if he continues to encounter problems we can easily conclude that it does not come from F5.

 

it is a WEB application? or do you use a heavy client ?

 

regards

 

  • suthomas1's avatar
    suthomas1
    Icon for Cirrostratus rankCirrostratus
    May 26, 2019

    Thanks Youssef,

     

    This is a web application where users login in & use the respective application tabs.

    I am planning to use tcpdump but will that give out the desired results in terms of timeout etc....I am sure it will show the connections but if the users are getting kicked out frequently, will dump help?

    The web application/site has been tested directly over internet outside of our corporate internet & it works fine with no issues.

    Even if the host file is modified , the user will still be going through proxy , is that correct?