CONFIGURATION modeip access-list extended access-list-name2. Configure an extended IP ACL filter for TCP packets.CONFIG-EXT-NACL modeseq sequence-number {deny | permit} tcp {source mask | any | host ip-address}} [count [byte]] [order] [fragments]Configure Filters, TCP PacketsTo create a filter for UDP packets with a specified sequence number, use the following commands.1. Create an extended IP ACL and assign it a unique name.CONFIGURATION modeip access-list extended access-list-name2. Configure an extended IP ACL filter for UDP packets.CONFIG-EXT-NACL modeseq sequence-number {deny | permit} tcp {source mask | any | host ip-address}} [count [byte]] [order] [fragments]Example of the seq CommandWhen you create the filters with a specific sequence number, you can create the filters in any order andthe filters are placed in the correct order.NOTE: When assigning sequence numbers to filters, you may have to insert a new filter. To preventreconfiguring multiple filters, assign sequence numbers in multiples of five or another number.The example below shows how the seq command orders the filters according to the sequence numberassigned. In the example, filter 15 was configured before filter 5, but the show config commanddisplays the filters in the correct order.Dell(config-ext-nacl)#seq 15 deny ip host 112.45.0.0 any logDell(config-ext-nacl)#seq 5 permit tcp 12.1.3.45 0.0.255.255 anyDell(config-ext-nacl)#show confi!ip access-list extended dillingseq 5 permit tcp 12.1.0.0 0.0.255.255 anyseq 15 deny ip host 112.45.0.0 any logDell(config-ext-nacl)#Configuring Filters Without a Sequence NumberIf you are creating an extended ACL with only one or two filters, you can let Dell Networking OS assign asequence number based on the order in which the filters are configured. Dell Networking OS assignsfilters in multiples of five.To configure a filter for an extended IP ACL without a specified sequence number, use any or all of thefollowing commands:• Configure a deny or permit filter to examine IP packets.CONFIG-EXT-NACL modeAccess Control Lists (ACLs) 103
