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Security 13-9
OO
OO
tt
tt
hh
hh
ee
ee
rr
rr
ff
ff
ii
ii
ll
ll
tt
tt
ee
ee
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aa
aa
tt
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rr
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ii
ii
bb
bb
uu
uu
tt
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ee
ee
ss
ss
There are three other attributes to each filter:
■ The filter’s order (i.e., priority) in the filter set
■ Whether the filter is currently active
■ Whether the filter is set to forward packets or to block (discard) packets
PP
PP
uu
uu
tt
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ii
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nn
nn
gg
gg
tt
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hh
hh
ee
ee
pp
pp
aa
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tt
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ss
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tt
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oo
oo
gg
gg
ee
ee
tt
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hh
hh
ee
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rr
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When you display a filter set, its filters are displayed as rows in a table:
The table’s columns correspond to each filter’s attributes:
#: The filter’s priority in the set. Filter number 1, with the highest priority, is first in the table.
Source IP Addr: The packet source IP address to match.
Dest IP Addr: The packet destination IP address to match.
Proto: The protocol to match. This can be entered as a number (see the table below) or as TCP or UDP if those
protocols are used.
Protocol Number to use Full name
N/A 0 Ignores protocol type
ICMP 1 Internet Control Message Protocol
TCP 6 Transmission Control Protocol
UDP 17 User Datagram Protocol
+-#---Source IP Addr---Dest IP Addr-----Proto-Src.Port-D.Port--On?-Fwd-+
+----------------------------------------------------------------------+
| 1 192.211.211.17 0.0.0.0 TCP 0 23 Yes No |
| 2 0.0.0.0 0.0.0.0 TCP NC =6000 Yes No |
| 3 0.0.0.0 0.0.0.0 ICMP -- -- Yes Yes |
| 4 0.0.0.0 0.0.0.0 TCP NC >1023 Yes Yes |
| 5 0.0.0.0 0.0.0.0 UDP NC >1023 Yes Yes |
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