3Com 5500-EI Series, Справочное руководство

Страница: 755 / 1314

1-16
Table 1-11 TCP/UDP-specific ACL rule information
Parameters Type Function Description
source-port
operator port1
[ port2 ]
Source port
Defines the source port
information of UDP/TCP
packets
destination-port
operator port1
[ port2 ]
Destination
port
Defines the destination
port information of
UDP/TCP packets
The value of operator can be
lt (less than), gt (greater
than), eq (equal to), neq (not
equal to) or range (within the
range of). Only the range
operator requires two port
numbers as the operands.
The other operators require
only one port number as the
operand.
port1 and port2 : TCP/UDP
port number(s), expressed as
port names or port numbers.
When expressed as
numerals, the value range is 0
to 65535.
With the range operator, the
value of port2 does not need
to be greater than that of port1
because the switch can
automatically judge the value
range. If the value of port1 is
the same as that of port2, the
switch will convert the
operator
range to eq .
Note that if you specify a
combination of
lt 1 or gt
65534, the switch will convert
it to
eq 0 or eq 65535.
established
TCP
connection
flag
Specifies that the rule is
applicable only to the first
SYN segment for
establishing a TCP
connection
TCP-specific argument
For a rule of an advanced ACL that is applied to ports or VLANs of the Switch 5500-EI series Ethernet
switches, if it contains TCP or UDP port information, the operator argument can only be eq .
If TCP or UDP port number is represented by name, you can also define the information listed in Table
1-12 .