D-Link DES-3028 Product Manual - Page 175

DES-3028 DES-3028P DES-3028G DES-3052 DES-3052P Layer 2 Fast Ethernet Managed Switch Figure 9- 5. Access Profile Configuration window (Packet Content Mask) This screen will aid the user in Switch to mask packet headers beginning with the offset value specified. The following fields are used to configure the Packet Content Mask: Parameter Description Profile ID (1-256) Type in a unique identifier number for this profile set. This value can be set from 1 to 256. Type Offset Select profile based on Ethernet (MAC Address), IP address or Packet Content Mask. This will change the menu according to the requirements for the type of profile.  Select Ethernet to instruct the Switch to examine the layer 2 part of each packet header.  Select IP to instruct the Switch to examine the IP address in each frame's header.  Select Packet Content Mask to specify a mask to hide the content of the packet header. This field will instruct the Switch to mask the packet header beginning with the offset value specified:  value (0-15) - Enter a value in hex form to mask the packet from the beginning of the packet to the 16th byte.  value (16-31) - Enter a value in hex form to mask the packet from byte 16 to byte 31.  value (32-47) - Enter a value in hex form to mask the packet from byte 32 to byte 47.  value (48-63) - Enter a value in hex form to mask the packet from byte 48 to byte 63.  value (64-79) - Enter a value in hex form to mask the packet from byte 64 to byte 79. With this advanced unique Packet Content Mask (also known as Packet Content Access Control List - ACL), D-Link xStack switch family can effectively mitigate some network attacks 161