General Security Commands
XSR CLI Reference Guide 16-89
Syntax of the “no” Form
Threshold
logging
is
disabled
with
the
no
form
of
this
command:
no access-list log-update-threshold
Mode
Global
configuration:
XSR(config)#
Default
Disabled
Example
The
following
example
enables
alarm
logging
for
ACL
101
and
sets
the
log
threshold
at
10000
:
XSR(config)#access-list 101 deny ip 15.15.15.1 0.0.0.255 16.16.16.1 0.0.0.255 log
XSR(config)#access-list log-update-threshold 10000
hostdos
This
command
enables
host
security
protection
against
various
DoS
attacks
via
source
IP
address
validation.
Syntax
hostdos
{
land
|
fragmicmp
|
largeicmp
[
size
]
|
checkspoof
}
Syntax of the “no” Form
The
no
form
disables
the
specified
security
feature:
no hostdos
{
land
|
fragmicmp
|
largeicmp
[
size
]
|
checkspoof
}
Mode
Global
configuration:
XSR(config)#
Defaults
•
Disabled
•
Size:
1024
Note:
Performing source address validation can improve security in some situations but can
erroneously discard valid packets in situations where inbound and outbound paths differ and will
negatively impact some routing protocols.
land
Enables
land
attack
protection.
fragmicmp
Enables
fragmented
ICMP
packets
protection.
largeicmp
Enables
large
ICMP
packets
protection.
size
Packet
size
above
which
protection
starts,
ranging
from
1
to
65535.
checkspoof
Enables
spoofed
address
checking.
Содержание X-Pedition XSR
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Страница 134: ...Bootrom Monitor Mode Commands 3 128 Configuring the XSR Platform...
Страница 278: ...VRRP Clear and Show Commands 5 202 Configuring the Internet Protocol...
Страница 352: ...IGMP Clear and Show Commands 7 104 Configuring IP Multicast...
Страница 406: ...Multilink Show Commands 8 136 Configuring the Point to Point Protocol...
Страница 436: ...Frame Relay Clear and Show Commands 9 112 Configuring Frame Relay...
Страница 460: ...Dialer Watch Commands 10 106 Configuring the Dialer Interface...