• icap_preview_size
• icap_retry
• icap_retry_limit
• icap_send_client_ip
• icap_send_client_username
• icap_service
• icap_service_failure_limit
• icap_service_revival_delay
• icap_uses_indirect_client
• icon_directory
• icp_access
• icp_hit_stale
• icp_port
• icp_query_timeout
• ident_lookup_access
• ident_timeout
• ie_refresh
• ignore_expect_100
• ignore_ims_on_miss
• ignore_unknown_nameservers
• incoming_dns_average
• incoming_http_average
• incoming_icp_average
• incoming_rate
• incoming_tcp_average
• incoming_udp_average