Data Server Applications Functions - Samsung OfficeServ 7400 General Description Manual

CHAPTER 4. OfficeServ 7400 Functions
Intrusion Detection System (IDS)
This function monitors packets on the network and detects those which can adversely affect
network operation, making the network more stable. IDS is divided into various types from
a detection type, where a specific type of attack is detected, to the abnormal traffic detect-
ing type; these are based on the Snort Rule (www.snort.org) which defines the intrusion pat-
tern and types. The detected packets are sorted and processed into Close connection/port or
service disable/Alarm/log, based on the intrusion pattern and the level. In the case of an
alarm, the system will notify the system administrator immediately.
Virtual Private Network (VPN)
VPN function
The system provides the virtual private network function using the Internet open net-
work. The VPN gateway function is based on the IPSec (IPSecurity), which is used to
build the enterprise network with reduced cost and enforced security using the public
network (such as the Internet) rather than the dedicated network.
VPN Tunnel Mode
VPN functions are processed by establishing a tunnel through the VPN gateways be-
tween the OfficeServ 7400 data servers. Up to 100 VPN channels are available for one
VPN.
PPTP
PPTP is a tunnelling protocol for using the IP-based network. PPP encapsulates the
data by wrapping the data with a PPP header. PPTP reconfigures the packets by adding
a Generic Routing Encapsulation (GRE) header and IP header to this so that the pack-
ets can be transmitted via the IP network.
L2TP
L2TP protocol combines PPTP and Layer 2 Forwarding (L2F). It encapsulates a user
PPP frame (a Layer 2 frame) in an additional message called L2TP and then transmits
it to the device connected to the public network, such as IP, X.25, frame relay, or
Asynchronous Transmission Mode (ATM).

4.2.4 Data Server Applications Functions

DHCP
The OfficeServ 7400 can assign the IP address using DHCP. When using the DHCP server
in another subnet, the OfficeServ 7400 supports the DCCP relay function. The IP address of
equipment connected to the OfficeServ 7400 can be managed easily.
SIP Aware ALG (SIP Application Gateway)
This function is used for recreating packets for smooth communication by checking the SIP
signal process packets according to the NAT/PT table in the data server. When using the
system data server, SIP equipment can operate regardless of the packet blocking caused by
the firewall or the NAT/PT conversion.
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