TP-Link TL-SG5426 User Guide - Page 113
Source/Destination IP Address, Source/Destination Port Bitmask
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3 Configuring the Switch host address in the Address field, or "IP" to specify a range of addresses with the Address and SubMask fields. (Options: Any, Host, IP; Default: Any) • Source/Destination IP Address - Source or destination IP address. • Source/Destination Subnet Mask - Subnet mask for source or destination address. • Service Type - Packet priority settings based on the following criteria: - Precedence - IP precedence level. (Range: 0-7) - TOS - Type of Service level. (Range: 0-15) - DSCP - DSCP priority level. (Range: 0-63) • Protocol - Specifies the protocol type to match as TCP, UDP or Others, where others indicates a specific protocol number (0-255). (Options: TCP, UDP, Others; Default: TCP) • Source/Destination Port - Source/destination port number for the specified protocol type. (Range: 0-65535) • Source/Destination Port Bitmask - Decimal number representing the port bits to match. (Range: 0-65535) • Control Code - Decimal number (representing a bit string) that specifies flag bits in byte 14 of the TCP header. (Range: 0-63) • Control Code Bit Mask - Decimal number representing the code bits to match. The control bitmask is a decimal number (for an equivalent binary bit mask) that is applied to the control code. Enter a decimal number, where the equivalent binary bit "1" means to match a bit and "0" means to ignore a bit. The following bits may be specified: - 1 (fin) - Finish - 2 (syn) - Synchronize - 4 (rst) - Reset - 8 (psh) - Push - 16 (ack) - Acknowledgement - 32 (urg) - Urgent pointer For example, use the code value and mask below to catch packets with the following flags set: - SYN flag valid, use control-code 2, control bitmask 2 - Both SYN and ACK valid, use control-code 18, control bitmask 18 - SYN valid and ACK invalid, use control-code 2, control bitmask 18 Web - Specify the action (i.e., Permit or Deny). Specify the source and/or destination addresses. Select the address type (Any, Host, or IP). If you select "Host," enter a specific address. If you select "IP," enter a subnet address and the mask for an address range. Set any other required criteria, such as service type, protocol type, or TCP control code. Then click Add. 3-70