Sun Certified Solaris(tm) 9 System and Network Administrator All-in-One Exam Guide

ndd is used to set parameters for network protocols, including TCP, IP, UDP, and ARP. It can be used to modify the parameters associated with IP forwarding and routing. For example, let's look at the set of configurable parameters for TCP transmission:

server# ndd /dev/tcp \? ? (read only) tcp_close_wait_interval (read and write) tcp_conn_req_max_q (read and write) tcp_conn_req_max_q0 (read and write) tcp_conn_req_min (read and write) tcp_conn_grace_period (read and write) tcp_cwnd_max (read and write) tcp_debug (read and write) tcp_smallest_nonpriv_port (read and write) tcp_ip_abort_cinterval (read and write) tcp_ip_abort_linterval (read and write) tcp_ip_abort_interval (read and write) tcp_ip_notify_cinterval (read and write) tcp_ip_notify_interval (read and write) tcp_ip_ttl (read and write) tcp_keepalive_interval (read and write) tcp_maxpsz_multiplier (read and write) tcp_mss_def (read and write) tcp_mss_max (read and write) tcp_mss_min (read and write) tcp_naglim_def (read and write) tcp_rexmit_interval_initial (read and write) tcp_rexmit_interval_max (read and write) tcp_rexmit_interval_min (read and write) tcp_wroff_xtra (read and write) tcp_deferred_ack_interval (read and write) tcp_snd_lowat_fraction (read and write) tcp_sth_rcv_hiwat (read and write) tcp_sth_rcv_lowat (read and write) tcp_dupack_fast_retransmit (read and write) tcp_ignore_path_mtu (read and write) tcp_rcv_push_wait (read and write) tcp_smallest_anon_port (read and write) tcp_largest_anon_port (read and write) tcp_xmit_hiwat (read and write) tcp_xmit_lowat (read and write) tcp_recv_hiwat (read and write) tcp_recv_hiwat_minmss (read and write) tcp_fin_wait_2_flush_interval (read and write) tcp_co_min (read and write) tcp_max_buf (read and write) tcp_zero_win_probesize (read and write) tcp_strong_iss (read and write) tcp_rtt_updates (read and write) tcp_wscale_always (read and write) tcp_tstamp_always (read and write) tcp_tstamp_if_wscale (read and write) tcp_rexmit_interval_extra (read and write) tcp_deferred_acks_max (read and write) tcp_slow_start_after_idle (read and write) tcp_slow_start_initial (read and write) tcp_co_timer_interval (read and write) tcp_extra_priv_ports (read only) tcp_extra_priv_ports_add (write only) tcp_extra_priv_ports_del (write only) tcp_status (read only) tcp_bind_hash (read only) tcp_listen_hash (read only) tcp_conn_hash (read only) tcp_queue_hash (read only) tcp_host_param (read and write) tcp_1948_phrase (write only)

Parameters can also be set for IP, as well as TCP. For example, if the parameter ip_forwarding has a value of 2 (the default), it will only perform routing when two or more interfaces are active. However, if this parameter is set to zero, then ip_forwarding will never be performed (that is, to ensure that multihoming is enabled rather than routing). This can be set by using the following command:

server# ndd -set /dev/ip ip_forwarding 0

in. ftpd

As we mentioned in the previous section, FTP commands are associated with specific operations that are to be performed on the server. Most FTP clients and the Solaris FTP server support the following case-insensitive commands:

The following is a list of possible response codes, which the server generates in response to each command issued from the client:

 
 
   
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