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UTM distorts IP phones

Our SG 105 Firewalls are distorting the ip phone calls. We tried it without the firewall and the calls were not distorted anymore. Is there any helping page / recommendations for configuring the firewalls correctly for ip telefon services?

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0 dirkkotte over 6 years ago

check IPS / UDP-Flood protection.

Repeatedly this interfered the phones.

Try to disable UDP-flood-protection ... if this help, reenable the Settings and create an exception.

Dirk

Systema Gesellschaft für angewandte Datentechnik mbH // Sophos Platinum Partner
Sophos Solution Partner since 2003
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0 SEBB over 6 years ago in reply to dirkkotte

The UPD-flood-protection was never active.
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0 Louis-M over 6 years ago in reply to SEBB

There is a voip feature on the UTM where you put your clients into one part and the servers on the internet into another. This then loads rules into the firewall to assist with this.

Are you using this? If not, you may be looking at manual QoS rules etc to rectify this.
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0 StealthyM over 6 years ago in reply to Louis-M

Hi Louis, can you tell me where this voip feature is?
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0 Louis-M over 6 years ago in reply to StealthyM

Network Protection > Voip
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0 BAlfson over 6 years ago in reply to SEBB

Hi, SEBB, and welcome to the UTM Community!

I saw your response to Dirk. Please humor us and look at the Intrusion Prevention log. See #1 in Rulz.

Cheers - Bob

Sophos UTM Community Moderator
Sophos Certified Architect - UTM
Sophos Certified Engineer - XG
Gold Solution Partner since 2005

MediaSoft, Inc. USA
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