Content Filtering Support Overview
â–€ URL Blacklisting Support
â–„ Cisco ASR 5000 Series Product Overview
Figure 173. High-Level Architecture of URL Blacklisting with ECS
URL Blacklisting System
In-
memory BLDB
(
In Session Manager
)
Session Manager
Task (
DPI
)
OPTBLDB
Files
Session Controller Task
Database
Load
/
Update
OPTBLDB
BL OPTBLDB
Database Update
WEM Server
SFTP
Blacklist Source
BL File
MS / SS
URL Blacklisting Solution Components
The URL Blacklisting solution uses the deep-packet inspection capabilities of ECS for URL/URI extraction.
ECS functionality is managed by the following components:
Session Controller (SessCtrl): The SessCtrl runs on the primary SPC/SMC and is responsible for managing
ECS and URL Blacklisting services.
Session Manager (SessMgr): A single SessMgr treats ECS charging and URL Blacklisting that is applicable to
common subscriber sessions.
Apart from ECS, the URL Blacklisting solution uses the following components:
Content Filtering Subsystem in ECS
Web Element Manager (WEM)