Mar 27, 2026 - For details about updated CVE-2025-53521 (BIG-IP APM vulnerability), refer to K000156741.

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Sumanta_88744's avatar
Sumanta_88744
Icon for Cirrus rankCirrus
Jul 22, 2016
Solved

Connection rate limit not working in F5

Hi Experts   During a recent test scenario on F5 LTM 2000, we tried rate limiting the virtual server based on (1) only source address and (2) virtual server and source address. I had set rate limi...
application delivery
big-ip
LTM
security
  • Yann_Desmarest_'s avatar
    Yann_Desmarest_
    Jul 22, 2016

    Hi,

     

    The rate limit just limit the number of new connections per second. It's not the number of concurrent connections.

     

Yann_Desmarest_'s avatar
Yann_Desmarest_
Icon for Nacreous rankNacreous
Jul 22, 2016

Hi,

 

The rate limit just limit the number of new connections per second. It's not the number of concurrent connections.

 

Yann_Desmarest_'s avatar
Yann_Desmarest_
Icon for Nacreous rankNacreous
Jul 22, 2016

Unfortunately,

 

If you want a connection limit by source IP, you should switch to irules. Connection Limit and Connection Rate Limit are settings that apply to connections for the Virtual Server.

 

You may also try using Bandwidth controller or rate class to limit by bandwidth usage per ip address.