26. a) In Figure 4-18, explain why Rule 1 brings more security than Rule 2.b) Explain why the last rule in an ACL should deny anything not previously approved by earlier rules. c) Why do you think authentication is sometimes required before accepting a connection? d) When a packet addressed to 60.1.232.89 arrives what rule will the SPI firewall look at first? e) Why must Rule 2 come after Rule 1? f) Add a rule to permit access by hosts in accounting to server 60.3.4.67. Require authentication. What rule number would you give it