3Com 3CBLSG24 User Guide - Page 74
Source Address, Destination Port
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74 CHAPTER 4: MANAGING DEVICE SECURITY The IP Based ACL Remove Page contains the following fields: ■ ACL Name - Contains a list of the IP-based ACLs. ■ Remove ACL - Removes an ACL. The possible field values are: ■ Checked - Removes the selected IP-based ACL. ■ Unchecked - Maintains the IP-based ACL. ■ Priority - Indicates the ACL priority, which determines which ACL is matched to a packet on a first-match basis. The possible field values are 1-2147483647. ■ Protocol - Indicates the protocol in the ACE to which the packet is matched. ■ Destination Port - Defines the TCP/UDP destination port. ■ Source Port - Defines the TCP/UDP source port to which the ACL is matched. ■ Flag Set - Sets the indicated TCP flag matched to the packet. ■ ICMP Type - Specifies an ICMP message type for filtering ICMP packets. ■ ICMP Code - Specifies an ICMP message code for filtering ICMP packets. ICMP packets that are filtered by ICMP message type can also be filtered by the ICMP message code. ■ IGMP Type - IGMP packets can be filtered by IGMP message type. ■ Source Address - Indicates the source IP address. ■ Source Mask - Indicates the source IP address mask. ■ Destination Address - Indicates the destination IP address. ■ Destination Mask - Indicates the destination IP address mask. ■ DSCP - Matches the packet DSCP value to the ACL. Either the DSCP value or the IP Precedence value is used to match packets to ACLs. ■ IP - Prec. - Indicates matching ip-precedence with the packet IP precedence value. ■ Action - Indicates the ACL forwarding action. In addition, the port can be shut down, a trap can be sent to the network administrator, or packet is assigned rate limiting restrictions for forwarding. The options are as follows: ■ Permit - Forwards packets which meet the ACL criteria. ■ Deny - Drops packets which meet the ACL criteria.