Theodotos,
You are missing a COMMIT line for the *filter table. Each table must have a COMMIT. Simply put on a line all by itself the word 'COMMIT' right before your '#NAT rules' comment, then it should work for you. Eg:
COMMIT #NAT rules
Theodotos,
You are missing a COMMIT line for the *filter table. Each table must have a COMMIT. Simply put on a line all by itself the word 'COMMIT' right before your '#NAT rules' comment, then it should work for you. Eg:
COMMIT
#NAT rules