ZyXEL Communications SAM1316-22, User Manual

Page: 366 / 464

Chapter 55 Packet Filter Commands
SAM1316-22 User’s Guide
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all of the packet types. With PPPoE only, the SAM1316-22 rejects all packet types
except for PPPoE (packet types that are not listed are also rejected).
55.1.2 Packet Filter Set Command
Syntax:
ras> switch pktfilter set <portlist> [filter]
where
Figure 197 Packet Filter Show Command Example
ras> switch pktfilter show 1~2
V: pass through, -: filter out, #:Don't care
E: Enable, D: Disable
port pppoe ip arp netbios dhcp eapol igmp | PPPoE-Only
---- ----- -- --- ------- ---- ----- ---- | ----------
1 V V V V V V V | D
2 V V V V V V V | D
<portlist> =
You can specify a single DSL port <1>, all DSL ports
<*> or a list of DSL ports <1,3,5>. You can also include
a range of ports <1,5,6~8>.
[filter] =
[pppoe] Reject PPPoE packets. (Point-to-Point Protocol
over Ethernet) relies on PPP and Ethernet. PPPoE is a
specification for connecting the users on an Ethernet to
the Internet through a common broadband medium,
such as a single DSL line, wireless device or cable
modem.
[ip] Reject IP packets. Internet Protocol. The underlying
protocol for routing packets on the Internet and other
TCP/IP-based networks.
[arp] Reject ARP packets. Address Resolution Protocol is
a protocol for mapping an Internet Protocol address (IP
address) to a physical computer address that is
recognized in the local network.
[netbios] Reject NetBIOS packets. (Network Basic
Input/Output System) are TCP or UDP packets that
enable a computer to connect to and communicate with
a LAN.