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Introduction
162
Access Server Administrators’ Reference Guide
13 • Filter IP
Introduction
The access server software provides an IP filtering system that enables you to set up security as well as to provi-
sion services for selected customers. While IP filters are typically thought of as a security measure, many pro-
viders wish to limit some services a customer may have access to. These could include such things as limited
access only to an e-mail server or proxy server. IP filters also include the ability to encapsulate all packets
received on the specified dialup link in an extra IP header using RFC 2003. This would allow packets on a dial-
up link to be tunneled to a specific host.
Each filter is a defined list of parameters based upon attributes in the IP, TCP, and UDP headers. There are two
major steps to filter creation: first defining the filter, then applying it to a user connection. The same filter can
be shared by several users.
The access server enables 20 separate filters to be defined, of which up to 10 can be used on a single user con-
nection. A single filter can be assigned to a user via the Static Users Authentication. Multiple filters can be
assigned by using the RADIUS Filter-Id attribute.
Filters can be configured with default settings that are used for all dial-in sessions. If any filters are applied
through either RADIUS or the Static User filter parameter, then all of the dial-in defaults will be disabled and
only the specified filters will be applied.
Click on
Filter
IP under the
Configuration Menu
to display the
Filter IP
main window (see
figure 67
). The fol-
lowing sections describe each of the parameters found in FilterIP.
Figure 67. Filter IP main window
Defining a filter
To define a new filter, select a number and a name, then click on the
Submit Query
button to submit the
request. The number and name must not already exist in the IP FILTER list, and the number must be an inte-
ger between 1 and 20. To delete a filter, enter just the ID number without a name and click on the
Submit
Query
button.
Modify Filter
After entering a number and name, click on the name of the filter to display the filter parameters window (see
figure 68
).
Содержание 29XX Series
Страница 8: ...Contents Access Server Administrators Reference Guide 8...
Страница 19: ...19 Chapter 3 Import Export Chapter contents Introduction 20 Export Configuration 20 Import Configuration 22...
Страница 171: ...171 Access Server Administrators Reference Guide 14 Frame Relay Congestion frameEnableCongestion 177...
Страница 295: ...295 Chapter 25 Contacting Patton Chapter contents Introduction 296 Patton Electronics Company contact information 296...
Страница 304: ...304 Appendix B MIB trees Chapter contents Model 2960 MIB Tree Structure 305...
Страница 305: ...Model 2960 MIB Tree Structure 305 Access Server Administrators Reference Guide B MIB trees Model 2960 MIB Tree Structure...