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ICAP issue

Created: 24 Mar 2014 • Updated: 24 Mar 2014 | 1 comment

Hello All

I use a trial version of Symantec Protection Engine/

And I send ICAP request:

OPTIONS icap:// ICAP/1.0


Response is as following:

ICAP/1.0 505 ICAP version not supported

ISTag: "22765175D47CBEC003D9844013762FD1"

Date: Mon Mar 24 07:57:51 2014 GMT

Service: Symantec Protection Engine/


i.e. ICAP v1.0 is not supported
but according to "Symantec™Protection Engine for Network Attached Storage 7.5 Software Developer's Guide" document this version is supported.

Could you clear the issue. And if the  ICAP v1.0 is not supported by  Symantec Protection Engine/ could you let me know:
- what version is supported
- where can I get an appropriate document (reference to the doc.) 

Thank you,
Alexey Sakharov

Operating Systems:

Comments 1 CommentJump to latest comment

haro's picture

I just copy&pasted your ICAP command within my environment, and it just works OK for me.
The SPE7.5 is running on a Win2008R2 server accessed from a client running CentOS6.4, as follows:

[haro@localhost ~]$ telnet 1344
Connected to
Escape character is '^]'.
OPTIONS icap:// ICAP/1.0

ICAP/1.0 200 OK
Date: Tue Jun 17 07:26:13 2014 GMT
Methods: REQMOD
Service: Symantec Protection Engine/
ISTag: "63708BB8A01B74DB06539D6D69B7881A"
X-Definition-Info: 20140616.009
Max-Connections: 128
X-Allow-Out: X-Outer-Container-Is-Mime, X-Infection-Found, X-Definition-Info, X-AV-License
X-Allow-Out: X-Violations-Found
Allow: 204
Options-TTL: 3600
Preview: 4
Transfer-Preview: *
X-AV-License: 1
Encapsulated: null-body=0

Connection closed by foreign host.
[haro@localhost ~]$

ICAP/1.0 is supported with SPE7.5 and best reference to ICAP implementation for SPE is the "Software Developer's Guide" provided with SPE.