Numeric protocol fields
If Numeric is selected as the prot ocol when specifying a rule, a text field appears to t he right of
the menu for the desired number.
TCP protocol fields
If TCPi ssel ected as the protocol when sp ecifying a rule, the addition al fields shown in the
following tab le appear on the bottom of the form.
Field/Menu Optio n D efinition
SourcePort
-OR -
DestinationPort
-AND-
to
Aport n umber for filtering in the Source Por t or Destination Port field. A range of IP
addresscan be specifiedby adding a second port n umber in the to field. TCP
packetsare filtered for for the range of specifiedIP addresses.
TCP Flags
TheT CP flagscause packets to be filtered for the specified flaga nd the selected
condition.The flags are : SYN ( synchronize), ACK (acknowledge), F IN (finish),
RST (reset), U RG (urge nt) or PSH (push) and the conditionsar e either Any, Set or
Unset.
Inverted Bychecking thisbox, the TC P optionsar e Inverted. Inverting an item negates the
selectedrules. Rules will apply to everything except the selectedoptions.
Table 7.7: Expert - TCP Option s Fields
UDP protocol fields
If UDP is selected as a protocol when specifying a rul e,th e additional fields show n in the
following tab le appear at the bottom of the form.
Field Definitio n
SourcePort
-OR - Destination Port
-AND-
to
Aport n umber for filtering in the Source Por t or Destination Port field. A range of IP
addresscan be specifiedby adding a second port n umber in the to field. TCP
packetsare filtered for for the range of specifiedIP addresses.
Inverted Bychecking thisbox, the UD Pop tionsare I nverted. Inverting an item negates the
selectedrules. Rules willapply to everything except the selectedoptions.
Table 7.8: UDP Op tions
82 Cyclades®ACS50 00 Installation/ Administration/User Gu ide