Brocade Fabric OS Administrators Guide (Supporting Fabric OS v7.3.0) - Manual (Page 236)

Implicit IP Filter rules TABLE 48
Source address Destination port Protocol Action
Any 1024-65535 TCP Permit
Any 1024-65535 UDP Permit
Default policy rules
Switches have a default IP Filter policy for IPv4 and IPv6. The default IP Filter policy cannot be
deleted or changed. When an alternative IP Filter policy is activated, the default IP Filter policy
becomes deactivated.
Table 49 lists the rules of the default IP Filter policy.
Default IP policy rules TABLE 49
Rule number Source address Destination port Protocol Action
1 Any 22 TCP Permit
2 Any 23 TCP Permit
6 Any 80 TCP Permit
7 Any 443 TCP Permit
8 Any 161 UDP Permit
10 Any 123 UDP Permit
11 8 Any 600-1023 TCP Permit
12 8 Any 600-1023 UDP Permit
IP Filter policy enforcement
An active IP Filter policy is a filter applied to the IP packets through the management interface. IPv4
management traffic passes through the active IPv4 filter policy, and IPv6 management traffic passes
through the active IPv6 filter policy. The IP Filter policy applies to the incoming (ingress) management
traffic only. When a packet arrives, it is compared against each rule, starting from the first rule. If a
match is found for the source address, destination port, and protocol, the corresponding action for this
rule is taken, and the subsequent rules in this policy are ignored. If there is no match, then it is
compared to the next rule in the policy. This process continues until the incoming packet is compared
to all rules in the active policy.
If none of the rules in the policy matches the incoming packet, the two implicit rules are matched to the
incoming packet. If the rules still do not match the packet, the default action, which is to deny, is taken.
When the IPv4 or IPv6 address for the management interface of a switch is changed through the
ipAddrSet command or manageability tools, the active IP Filter policies automatically become
enforced on the management IP interface with the changed IP address.
8 None of the RPC ports are configurable, even though the action shows "Permit".
Default policy rules
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