Configuration - ZyXEL Communications P-793H v2 Support Notes

P-793H v 2 Support Notes
10. What is LAND attack?
In a LAN attack, hackers flood SYN packets to the network with a spoofed
source IP address of the targeted system. This makes it appear as if the host
computer sent the packets to itself, making the system unavailable while the
target system tries to respond to itself.
11 What is Brute-force attack?
A Brute-force attack, such as 'Smurf' attack, targets a feature in the IP
specification known as directed or subnet broadcasting, to quickly flood the
target network with useless data. A Smurf hacker flood a destination IP
address of each packet is the broadcast address of the network, the router
will broadcast the ICMP echo request packet to all hosts on the network. If
there are numerous hosts, this will create a large amount of ICMP echo
request packet, the resulting ICMP traffic will not only clog up the
'intermediary' network, but will also congest the network of the spoofed
source IP address, known as the 'victim' network. This flood of broadcast
traffic consumes all available bandwidth, making communications impossible.
12. What is IP Spoofing attack?
Many DoS attacks also use IP Spoofing as part of their attack. IP Spoofing may
be used to break into systems, to hide the hacker's identity, or to magnify the
effect of the DoS attack. IP Spoofing is a technique used to gain unauthorized
access to computers by tricking a router or firewall into thinking that the
communications are coming from within the trusted network. To engage in IP
Spoofing, a hacker must modify the packet headers so that it appears that the
packets originate from a trusted host and should be allowed through the router
or firewall.
13. What are the default ACL firewall rules in P-793H v2?
There are two default ACLs pre-configured in the P-793H v2, one allows all
connections from LAN to WAN and the other blocks all connections from WAN to
LAN except of the DHCP packets.

Configuration

1. How do I configure the firewall?
You can use the Web Configurator to configure the firewall for P-793H v2. By
factory default, if you connect your PC to the LAN Interface of P-793H v2, you
can access Web Configurator via „http://192.168.1.1‟.
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