Chapter 12
| Security Measures
Access Control Lists
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◆ Action – An ACL can contain any combination of permit or deny rules.
◆ Source Address Type – Specifies the source IP address type. Use “Any” to
include all possible addresses, “Host” to specify a specific host address in the
Address field, or “IPv6-Prefix” to specify a range of addresses. (Options: Any,
Host, IPv6-Prefix; Default: Any)
◆ Destination Address Type – Specifies the destination IP address type. Use
“Any” to include all possible addresses, or “IPv6-Prefix” to specify a range of
addresses. (Options: Any, IPv6-Prefix; Default: Any)
◆ Source/Destination IPv6 Address – An IPv6 address or network class. The
address must be formatted according to RFC 2373 “IPv6 Addressing
Architecture,” using 8 colon-separated 16-bit hexadecimal values. One double
colon may be used in the address to indicate the appropriate number of zeros
required to fill the undefined fields.
◆ Source/Destination Prefix-Length – A decimal value indicating how many
contiguous bits (from the left) of the address comprise the prefix; i.e., the
network portion of the address. (Range: 0-128 bits for the source prefix; 0-8 bits
for the destination prefix)
◆ DSCP – DSCP traffic class. (Range: 0-63)
◆ Next Header – Identifies the type of header immediately following the IPv6
header. (Range: 0-255)
Optional internet-layer information is encoded in separate headers that may be
placed between the IPv6 header and the upper-layer header in a packet. There
are a small number of such extension headers, each identified by a distinct Next
Header value. IPv6 supports the values defined for the IPv4 Protocol field in
RFC 1700, and includes these commonly used headers:
0 : Hop-by-Hop Options (RFC 2460)
6 : TCP Upper-layer Header (RFC 1700)
17 : UDP Upper-layer Header (RFC 1700)
43 : Routing (RFC 2460)
44 : Fragment (RFC 2460)
50 : Encapsulating Security Payload (RFC 2406)
51 : Authentication (RFC 2402)
60 : Destination Options (RFC 2460)
◆ Time Range – Name of a time range.
Web Interface
To add rules to an Extended IPv6 ACL:
1. Click Security, ACL.
2. Select Configure ACL from the Step list.
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