Forum Discussion

rkram_p's avatar
rkram_p
Icon for Altostratus rankAltostratus
Feb 23, 2026

Block specific URL's in APM

we have requirement to block particular URL's and URI.

can we block URL and URI in the APM provisioned F5 device.

 

Thanks,

RK

 

APM
application delivery
security

5 Replies

  • Injeyan_Kostas's avatar
    Injeyan_Kostas
    Icon for MVP rankMVP
    Feb 23, 2026

    Yes you can, even with just LTM

    try something like this

    when HTTP_REQUEST
{
    switch -glob [ string tolower [HTTP::uri] ]
    {
        "/uri1" -
        "/uri2"
        {
            drop
        }
        default
        {}
    }
}

     

  • Daniel_Wolf's avatar
    Daniel_Wolf
    Icon for MVP rankMVP
    Feb 23, 2026

    Hi rkram_p​, 

    if you really want to use APM, you could use Per-Request Polices. Do as Kostas said, use iRules instead.

    Cheers
    Daniel

    • Injeyan_Kostas's avatar
      Injeyan_Kostas
      Icon for MVP rankMVP
      Feb 24, 2026

      you can try somthing like this

      when HTTP_REQUEST
{
	switch -glob [ string tolower [HTTP::host] ]
    {
        "test.example.com"
		{
			switch -glob [ string tolower [HTTP::uri] ]
			{
				"/uri1" -
				"/uri2"
				{
					drop
				}
				default
				{}
			}
		}
		"test2.example.com"
		{
			switch -glob [ string tolower [HTTP::uri] ]
			{
				"/uri3" -
				"/uri4"
				{
					drop
				}
				default
				{}
			}
		}
		default
		{}	
    }
}

       

  • Jonathancert's avatar
    Jonathancert
    Icon for Cirrus rankCirrus
    Feb 25, 2026

    You can also use Local Traffic Policy. I try to only use iRule if a Local Traffic Policy can not be effective.  Less CPU cost.

     

    GUI path: Local Traffic → Policies → Policy List → Create

    Use these settings:

    • Name: block_specific_url
    • Strategy: first-match (recommended for deterministic behavior)