仅仅允许到主机1.1.1.1的SMTP邮件服务的命名访问控制列表语句是()。
- Aip access-list standard cisco permit smtp host 1.1.1.1
- Bip access-list extended cisco permit ip smtp host 1.1.1.1
- Cip access-list standard cisco permit tcp any host 1.1.1.1 eq smtp
- Dip access-list extended cisco permit tcp any host 1.1.1.1 eq smt