449
098c3280 0.0.0.0:23 0.0.0.0:0 Listening
098c3d20 0.0.0.0:646 0.0.0.0:0 Listening
Table 79 Command output
Field Description
*: TCP MD5 Connection
If the status information about a TCP connection contains an asterisk (*), the
TCP adopts the MD5 algorithm for authentication.
TCPCB
TCP control block.
Local Add:port
Local IP address and port number.
Foreign Add:port
Remote IP address and port number.
State
State of the TCP connection.
Chassis
n
Slot
m
Card in slot
m
of IRF member device
n
.
tcp anti-naptha enable
Use
tcp anti-naptha enable
to enable the protection against Naptha attack.
Use
undo tcp anti-naptha enable
to disable the protection against Naptha attack.
Syntax
tcp anti-naptha enable
undo tcp anti-naptha enable
Default
The protection against Naptha attack is disabled.
Views
System view
Default command level
2: System level
Usage guidelines
The configurations made by using the
tcp state
and
tcp timer check-state
commands are removed
after the protection against Naptha attack is disabled.
Examples
# Enable the protection against Naptha attack.
<Sysname> system-view
[Sysname] tcp anti-naptha enable
tcp state
Use
tcp state
to configure the maximum number of TCP connections in a state. When this number is
exceeded, the aging of TCP connections in this state is accelerated.
Use
undo tcp state
to restore the default.
Syntax
tcp state
{
closing
|
established
|
fin-wait-1
|
fin-wait-2
|
last-ack
|
syn-received
}
connection-number
number
