List 3–6Barracuda NG Network Access Client

Parameter Description

ICMP Parameters

This tab allows you to configure blocking of ICMP packets.

Connect to the Internet

Setting to yes creates a pass rule named ADSL in the Outgoing tab of the firewall configuration that is needed for Internet

with ADSL (PPTP)

connections via ADSL.

 

The service object used in this rule amongst others implements the services and protocols listed in table 3–3, page 50.

 

 

Table 3–3Services and protocols employed by the ADSL rule

Port

Protocol

Service Name

Description

 

 

 

 

 

GRE

pptp

Generic Routing Encapsulation; protocol which allows an arbitrary network protocol A to be

 

 

 

transmitted over any other arbitrary network protocol B, by encapsulating the packets of A within

 

 

 

GRE packets, which in turn are contained within packets of B

 

 

 

 

1723

TCP

NETBIOS-DGM

Point-to-Point tunnelling protocol; control port

 

 

 

 

50 Server Config – Personal Firewall Rules

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Barracuda Networks VERSION SP4 manual Port Protocol Service Name Description, Icmp Parameters, Connect to the Internet