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AT+i Programmer's Manual - SE Spezial-Electronic AG

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33.3.17 +iSDM — Service Disabling Mode<br />

Syntax: <strong>AT+i</strong>SDM=n<br />

Parameters: n=0 .. 7<br />

Command Options:<br />

Sets the service disabling mode bits.<br />

n= Bitmapped flags:<br />

Nonvolatile Parameter Database<br />

Bit 0: Disable iChip‘s response to ICMP ECHO (PING)<br />

requests. When this bit is set, iChip will not respond to any<br />

PING requests, thereby eliminating the possibility of a PING<br />

attack on iChip.<br />

Bit 1: Disable iChip‘s remote debug daemon. When this bit<br />

is set, iChip will not enable its internal (UDP) debug port,<br />

which is normally activated for administering remote<br />

support.<br />

Bit 3: Disable unauthenticated viewing of the iChip‘s<br />

internal website. When this bit is set, the internal Web site<br />

may be browsed only if the remote browser provides the<br />

RPG parameter (password). In this case, when the RPG<br />

parameter contains a password value, iChip‘s Configuration<br />

Web site will first display a password entry form. The remote<br />

end must submit the correct RPG value in order to continue<br />

to the Configuration site‘s home page. iChip uses the SHA1<br />

hash algorithm throughout the authentication process, so<br />

actual password values are never transmitted. When this bit<br />

is set, but the RPG parameter is empty, the Configuration<br />

Web site is effectively disabled, as all password values will<br />

be rejected. However, if the RPG parameter contains the<br />

special ‗*‘ wildcard value, authentication is bypassed and the<br />

authentication form will be skipped altogether. In this case,<br />

the Configuration website‘s home page will be displayed<br />

immediately.<br />

Default: 0 (All services enabled)<br />

Result Code:<br />

I/OK If n is within limits<br />

I/ERROR Otherwise<br />

<strong>AT+i</strong>SDM? Returns current Service Disabling mode followed by I/OK.<br />

<strong>AT+i</strong>SDM=? Returns the message ―0-7‖ followed by I/OK.

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