Gavin,
 
> Our backup server IP address is 1.1.1.1 
> I want to exclude the data going to/from it 
> this below config does not appear to 
> could someone tell me what I'm missing? 
 
You don't say exactly what is not working. The filter is syntactically
valid and matches traffic as I would expect within my network. I suspect
your problem is that you are confusing which IP addresses will be source
and destination addresses for each flow you are interested in. Note that
1.1.1.1 will never be in the customer IP address range so you don't need
to explicitly remove it. 
 
Try this:
 
filter-primitive not_backup_box
    type ip-address
    deny 1.1.1.1
    default permit
 
filter-primitive customer_lan
    type ip-address-prefix
    permit 192.168.137.88/30
    permit 192.168.138.48/29
    default deny
 
filter-definition from_customer_lan_to_not_backup_box
    match ip-source-address      customer_lan
    match ip-destination-address not_backup_box
 
filter-definition from_not_backup_box_to_customer_lan
    match ip-source-address      not_backup_box
    match ip-destination-address customer_lan
 
filter-definition between_customer_lan_and_not_backup_box
    match ip-source-address      customer_lan
    match ip-destination-address not_backup_box
or
    match ip-source-address      not_backup_box
    match ip-destination-address customer_lan

 
 

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