Operation Manual

Vigor2832 Series User’s Guide
547
T
T
e
e
l
l
n
n
e
e
t
t
C
C
o
o
m
m
m
m
a
a
n
n
d
d
:
:
d
d
d
d
n
n
s
s
l
l
o
o
g
g
Displays the DDNS log.
E
E
x
x
a
a
m
m
p
p
l
l
e
e
>ddns log
>
T
T
e
e
l
l
n
n
e
e
t
t
C
C
o
o
m
m
m
m
a
a
n
n
d
d
:
:
d
d
d
d
n
n
s
s
t
t
i
i
m
m
e
e
Sets and displays the DDNS time.
ddns time <update in minutes>
S
S
y
y
n
n
t
t
a
a
x
x
D
D
e
e
s
s
c
c
r
r
i
i
p
p
t
t
i
i
o
o
n
n
Parameter Description
Update in minutes Type the value as DDNS time. The range is from 1 to 14400.
E
E
x
x
a
a
m
m
p
p
l
l
e
e
> ddns time
ddns time <update in minutes>
Valid: 1 ~ 14400
%Now: 14400
> ddns time 1000
ddns time <update in minutes>
Valid: 1 ~ 14400
%Now: 1000
T
T
e
e
l
l
n
n
e
e
t
t
C
C
o
o
m
m
m
m
a
a
n
n
d
d
:
:
d
d
o
o
s
s
This command allows users to configure the settings for DoS defense system.
dos [-V | D | A]
dos [-s ATTACK_F [THRESHOLD][ TIMEOUT]]
dos [-a | e [ATTACK_F][ATTACK_0] | d [ATTACK_F][ATTACK_0]]
S
S
y
y
n
n
t
t
a
a
x
x
D
D
e
e
s
s
c
c
r
r
i
i
p
p
t
t
i
i
o
o
n
n
Parameter Description
-V View the configuration of DoS defense system.
-D Deactivate the DoS defense system.
-A Activate the DoS defense system.
-s Enable the defense function for a specific attack and set its
parameter(s).
ATTACK_F Specify the name of flooding attack(s) or portscan, e.g., synflood,
udpflood, icmpflood, or postscan.
THRESHOLD It means the packet rate (packet/second) that a flooding attack will
be detected. Set a value larger than 20.
TIMEOUT It means the time (seconds) that a flooding attack will be blocked.
Set a value larger than 5.
-a Enable the defense function for all attacks listed in ATTACK_0.