Bedienungsanleitung Snom M200 SC Base Station (Seite 65 von 120) (Englisch)

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M200SC Administrator and Provisioning Manual Provisioning using conﬁguration ﬁles

Conﬁguration File Tips and Security

All conﬁguration settings are initially stored in a conﬁguration template ﬁle. Copy, rename, and edit the

template ﬁle to create a general conﬁguration ﬁle and the MAC-speciﬁc conﬁguration ﬁles you will need. You

can store the general conﬁguration ﬁle and the MAC-speciﬁc ﬁles on your provisioning server.

Do not modify the conﬁguration ﬁle header line that includes the model and ﬁrmware version.

To save yourself time and eort, consider which settings will be common to all (or the majority of) M200SC base

stations. Such settings might include call settings, language, and NAT settings. You can then edit those settings

in the conﬁguration template and save it as the general conﬁguration ﬁle. The remaining settings will make up

the MAC-speciﬁc conﬁguration ﬁle, which you will have to copy and edit for each M200SC.

Guidelines for the MAC-Speciﬁc conﬁguration ﬁle

The M200SC downloads the MAC-speciﬁc conﬁguration ﬁle after the general conﬁguration ﬁle. You must create

a MAC-speciﬁc conﬁguration ﬁle for each M200SC in your system. The ﬁle name must contain the M200SC MAC

address, which is printed on a label on the bottom of the device. For example, an M200SC base station with the

MAC address of 00:11:A0:10:6F:2D would download the M200SC_0011A0106F2D.cfg ﬁle.

Note: When renaming a MAC-speciﬁc conﬁguration ﬁle, ensure the ﬁle name is all upper case.

The MAC-speciﬁc conﬁguration ﬁle contains settings intended exclusively for that M200SC base station. Such

settings will include SIP account settings such as display name, user ID, and authentication ID.

Securing conﬁguration ﬁles with AES encryption

You can encrypt your conﬁguration ﬁles to prevent unauthorized users modifying the conﬁguration ﬁles. The

M200SC ﬁrmware decrypts ﬁles using the AES 256 algorithm. After encrypting a ﬁle and placing it on your

provisioning server, you can enable the M200SC to decrypt the ﬁle after fetching it from the server.

The procedures in this section use OpenSSL for Windows for ﬁle encryption, as shown in Figure 2.

To decrypt a conﬁguration ﬁle, you will need a 16-character AES key that you speciﬁed when you encrypted the

ﬁle. The key (or passphrase) is limited to 16 characters in length and supports special characters ~ ^ ` % ! & - _

+ = | . @ * : ; , ? ( ) [ ] { } < > / \ # as well as spaces.

Note: The encryption of conﬁguration ﬁles is supported only for the auto provisioning process.

Encrypt ﬁles only if you intend to store them on a provisioning server. Do not encrypt

ﬁles that you intend to manually import to the M200SC. You cannot enable decryption for

manually imported conﬁguration ﬁles.

Encrypting a conﬁguration ﬁle:

1. (Optional) Place your conﬁguration ﬁle in the same folder as the openssl executable ﬁle. If the conﬁguration

ﬁle is not in the same folder as the openssl executable ﬁle, you can enter a relative pathname for the [inﬁle]

in the next step.

2. Double-click the openssl.exe ﬁle.

3. On the openssl command line (Fig. 1, below), type:

enc-aes-256-cbc-passpass:[passphrase123456]-in[inle]-out[outle]

-nosalt-p

Note: Elements in brackets are examples; do not enter the brackets. Enter a 16-character

passphrase and the ﬁlename of the unencrypted conﬁguration ﬁle (the “inﬁle”) and a name for

the encrypted ﬁle (“outﬁle”) that will result.

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