Forum Discussion

Nimbostratus

Nov 16, 2010

ICAP Monitor

Hi, Does anyone know if it is possible to have a ICAP monitor on BIG-IP LTM 10.2.0? I am going to have ICAP servers on a pool and I need to have a monitor for them. I have looked a...

management

monitoring

Artiom_Lichtens

Historic F5 Account

Nov 13, 2014

Hi,

I don't know if this is still relevant to anyone, but I have just used a standard HTTP monitor (since ICAP is clear text as well) and the ICAP OPTIONS method:

https://tools.ietf.org/html/rfc3507section-4.10.1

send "OPTIONS icap://ICAP_SERVER ICAP/1.0\r\n\r\n"
recv "ICAP/1.0 200 OK"

Manuel_60430
Nimbostratus
Nov 30, 2016
I was exactly looking for this and it works perfectly.

Thanks a lot!
nolipineda
Altostratus
Feb 20, 2018
Hi Artiom,

Thanks for sharing. Would you have an idea if you can replace "ICAP_SERVER" with a variable? Would be good to do if you have multiple AV appliance in a pool.

Thanks in advance. :)
Artiom_Lichtens
Historic F5 Account
Feb 20, 2018
Hi,
¬†

This is supported with External monitors:
¬†

https://devcentral.f5.com/s/articles/ltm-external-monitors-the-basics
¬†

You can pass environment variables and command line arguments to a custom script.
¬†

Hope this helps.
¬†
nolipineda
Altostratus
Feb 20, 2018
Thanks for link but it seems like it is not required.

Here is my send string "OPTIONS icap://avscanner/avscan ICAP/1.0\r\n\r\n" and managed to get a response.

***** WORKING CAPTURE *****

OPTIONS icap://avscanner/avscan ICAP/1.0

ICAP/1.0 200 OK Date: Tue, 20 Feb 2018 07:16:34 GMT Methods: RESPMOD, REQMOD Service: ProxyAV AV scanner 3.5.4.1(182496) ISTag: "1519109626" Service-ID: avscanner Encapsulated: null-body=0 Max-Connections: 100 X-Include: X-Server-IP, X-Client-IP Allow: 204 X-Scan-Progress-Interval: 3 X-Abandon-Supported: 1 ***** WORKING CAPTURE *****
Artiom_Lichtens
Historic F5 Account
Feb 20, 2018
Yeah, sure. I just thought you need per-monitor ability to use dynamic variables.

Glad you made it work!