Barracuda Networks VERSION SP4 - Manual (Page 61)

59 Barracuda NG Network Access Client - Administrator’s Guide
The following services are available in the Barracuda NG Personal Firewall by default:
3.7 Application Objects
The Application Objects tab allows creating predefined applications, which may be employed in rule
sets.
Click New … to open the Edit / Create Application Object window.
Table 3–5 Service Objects available in the Personal Firewall
Service Name Port Protocol Connection Description
ICMP O / I Internet Control Message Protocol; ICMP messages, delivered in IP packets are
used for out-of-band messages related to network operation, or misoperation.
DNS 53 TCP/UDP O Domain Name Service; method by which the Internet addresses in mnemonic form
(for example barracuda.com) are converted into the equivalent numeric IP address
(for example 134.220.4.1)
BOOTPS 67 UDP O Bootstrap protocol; also used for DHCP (Dynamic Host Configuration)
Kerberos 88 TCP/UDP O Protocol for authentication in Windows 2000 environment
NTP 123 UDP O Network Time Protocol; used to synchronize the time of a computer client or server
to another server or reference time source
LOC-SRV/EPMAP 135 TCP O NETBIOS; very common protocol; it is supported on both, Ethernet and TokenRing.
In NetBIOS, TCP and UDP communication is supported. It supports broadcasts and
multi-casting and also three distinct services: Naming, Session, and Datagram.
NETBIOS-NS 137 UDP O / I
NETBIOS-DGM 138 UDP O / I
NETBIOS-SSN 139 TCP O / I
SNMP 161 UDP O Simple Network Protocol; Network management system contains two primary
elements – Manager (console to perform network management functions) and
Agents (entities that interface to the actual managed device). SNMP allows
Managers and Agents to communicate.
LDAP 389 TCP/UDP O Lightweight Directory Access Protocol; set of protocols for accessing information
directories.
CIFS 445 TCP O / I further development of the SMB protocol and serves as an addition and
improvement to the standard protocols FTP and HTTP.
MSTASK 1026 TCP O Windows Task Scheduler; used to schedule tasks, such as backups or updates, to
run at certain times or dates
Application Liability and Application Type classifications are purely informational.