Tenda AC5 User Manual

100
10.6 Firewall
The Firewall function can protect the router against some common DoS attacks such as ICMP Flood Attack, TCP
Flood Attack, and UCP Flood Attack. It forbids WAN Ping as well, helping secure your network.
To access the configuration page, click Advanced Settings > Firewall. By default, the Firewall function is
enabled. It is recommended to retain the default settings.
Parameter descriptions
Parameter
Description
ICMP Flood Attack
Defense
ICMP Flood Attack is an attack using ICMP packets. If an attacker sends many
ICMP ECHO packets to destination host, which results in ICMP flood. Then
destination host pays much time and resources on ICMP ECHO but nothing on
normal requests or responses, which achieves attack against destination host.
TCP Flood Attack
Defense
In TCP protocol, when one client sends connection request and initialization to
server, protocol stack in server will leave Backlog Quene for information exchange
in connecting process.
Attackers make use of Backlog Quene and send TCP connection requests only
with SYN to server mark many times by special program. Server will regard those
requests as uncompleted and establish sessions for them in Backlog Queue.
If those SYN requests are more than what server can hold, Backlog Queue will be
full. Then server will not accept new request so that other legal connection will be
refused.
UCP Flood Attack
Defense
UCP Flood Attack works on the similar principle as ICMP Flood Attack. If an
attacker sends many UDP packets to destination host. Then destination host pays
much time and resources on UDP packets but nothing on normal packet requests
or responses, which achieves attack against destination host.
Forbid WAN Ping
When host in the internet tries to ping WAN IP address of the router, the router
will ignore that ping request automatically, protecting itself from external Ping

Tenda AC5 Specifications

General

Antennas quantity	4
Antenna gain level (max)	5 dBi
Certification	CE/FCC/RoHS
Built-in processor	Yes
Processor frequency	1000 MHz
Wi-Fi band	Dual-band (2.4 GHz / 5 GHz)
Wi-Fi standards	802.11a, Wi-Fi 5 (802.11ac), 802.11b, 802.11g, Wi-Fi 4 (802.11n)
Top Wi-Fi standard	Wi-Fi 5 (802.11ac)
WLAN data transfer rate (max)	1167 Mbit/s
WLAN data transfer rate (first band)	300 Mbit/s
WLAN data transfer rate (second band)	867 Mbit/s
VPN support	L2TP/PPTP/IPSec
Cabling technology	10/100Base-T(X)
Networking standards	IEEE 802.11a, IEEE 802.11ac, IEEE 802.11b, IEEE 802.11g, IEEE 802.11n, IEEE 802.3, IEEE 802.3u
Ethernet LAN data rates	10, 100 Mbit/s
Ethernet LAN interface type	Fast Ethernet
SIM card slot	No
Ethernet LAN (RJ-45) ports	3
Output current	1 A
Output voltage	9 V
AC input voltage	100 - 240 V
Power source type	DC
AC input frequency	50 - 60 Hz
Product type	Tabletop router
Product color	Black
LED indicators	LAN, System, WAN, WLAN
Security algorithms	WPA-PSK, WPA2-PSK, WPS
Storage temperature (T-T)	-40 - 70 °C
Operating temperature (T-T)	0 - 40 °C
Storage relative humidity (H-H)	5 - 90 %
Operating relative humidity (H-H)	10 - 90 %
Cables included	LAN (RJ-45)
Harmonized System (HS) code	85176990