User's Manual

Table Of Contents
Fortress ES-Series CLI Guide: Network Security, Authentication and Auditing
161
the destination port is not specified, the filter will be applied
no matter what the packet's destination port is.
NOT ALLOWED: Source Address, Source Prefix Length,
Destination Address, Destination Prefix Length, and
Protocol.
Adding rules to an interface does not automatically cause
those rules to be applied to packets entering and exiting that
interface. The user must enable packet filtering on the interface
using
set pktfilter:
CAUTION: It is
easy to forget that
the final rule on EVERY
interface that has
enabled packet filters is
an automatically gener-
ated rule that DENIES
ALL PACKETS! This is
true even if there are no
packet filtering rules
configured. Be very sure
before enabling packet
filtering on an interface
that you have not fil-
tered out the packets
that must go through in
order to ensure your
ability to monitor and
control the FMP! This
includes any necessary
"helper" IP protocols
such as DNS, DHCP,
DHCPv6, ICMP,
ICMPv6, IGMP, NTP,
IKE, L2TP, RADIUS,
OCSP, and CRL. If you
enable packet filtering
on an interface without
configuring permit
rules, the FMP will drop
all IP packets that come
in or that would be for-
warded out that inter-
face.
# set pktfilter -interface <interfaceName> -enable Y|N
View the current packet filter configuration with show
pktfilter:
# show pktfilter -name <filterName> -interface <interfaceName> -all
more
> show pktfilter
Packet filtering status (per interface):
bssForDoc: disabled
lan1: disabled
lan2: disabled
lan3: enabled
lan4: disabled
lan5: disabled
lan6: disabled
lan7: disabled
lan8: disabled
wan1: disabled
Packet filtering rules on interface lan3 (enabled):
Name: AllowICMPv6
Priority: 5
Action: permit
Log: N
Interface: lan3
Type: ipv6
Protocol: 58
Source: 0:0:0:0:0:0:0:0/0, Port: any
Destination: 0:0:0:0:0:0:0:0/0, Port: any
Name: AllowIPv6Srv
Priority: 7
Action: permit
Log: N
Interface: lan3
Type: ipv6
Protocol: any
Source: 2001:0:0:0:0:0:0:47/64, Port: any
Destination: 0:0:0:0:0:0:0:0/0, Port: any