Source IP Filtering (SF) setting

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Description (see setting description format info here)

 

Function:Defines whether the DS will accept incoming data connections from any network host (filtering disabled) or specific host only (filtering enabled)

 

Set (S) command format:SSFx, where x: 0 (disabled), 1 (enabled)

 

Get (G) command format:GSF

 

Init (I) command effect:Initialized unconditionally, through network command, serial command, or quick initialization

 

Post-initialization value:0 (disabled)

 

Change takes effect:After reboot

 

Overriding param/instr:Source IP Filtering (SF) parameter

 

Relevance conditions:Current Routing Mode (RM) [setting/parameter]= 0 (server) or 1 (server/client)

 

First introduced:V3.24/3.54

 

See also:Ethernet port and network communications

 


Details

 

When Source IP Filtering is 0 (disabled) the DS will accept an incoming data connection from any network host.

 

When Source IP Filtering is 1 (enabled) the DS will accept an incoming data connection only from host whose IP-address matches the one specified by current Destination IP-address [setting/parameter].

 

Since out-of-band on-the-fly commands (network-side parameters issued using Parameter (P) command) can also be considered a part of a data connection the DS will reject any such command that comes from a "wrong" IP-address while source IP-address filtering is enabled.

 

This setting is irrelevant when current Routing Mode (RM) [setting/parameter] is 2 (client) because in this mode the DS won't accept incoming connections at all.