Cisco Small Business RV220W Administration Guide

Firewall
Advanced Firewall Settings
Cisco RV220W Administration Guide 91
4
Session Settings
Use the Firewall > Advanced Settings > Session Settings page to limit the
maximum number of unidentified sessions and half-open sessions on the Cisco
RV220W. You can also introduce timeouts for TCP and UDP sessions to ensure
that Internet traffic is not deviating from expectations in your private network.
To open this page: In the navigation tree, choose Firewall > Advanced Settings >
Session Settings.
STEP 1 Enter these settings:
• Maximum Unidentified Sessions—Enter the maximum number of
unidentified sessions for the ALG identification process. This value can
range from 2 through 128. The default is 32 sessions.
• Maximum Half Open Sessions—Enter the maximum number of half-open
sessions. A half-open session is the session state between receipt of a SYN
packet and the SYN/ACK packet. Under normal circumstances, a session is
allowed to remain in the half-open state for 10 seconds. The maximum value
ranges from 0 through 3,000. The default is 128 sessions.
• TCP Session Timeout Duration—Enter the time, in seconds, after which
inactive TCP sessions are removed from the session table. Most TCP
sessions terminate normally when the RST or FIN flags are detected. This
value ranges from 0 through 4,294,967 seconds. The default is 1,800
seconds (30 minutes).
• UDP Session Timeout Duration—Enter the time, in seconds, after which
inactive UDP sessions are removed from the session table. This value ranges
from 0 through 4,294,967 seconds. The default is 120 seconds (2 minutes).
• Other Session Timeout Duration (seconds)—Enter the time, in seconds,
after which inactive non-TCP/UDP sessions are removed from the session
table. This value ranges from 0 through 4,294,967 seconds. The default is 60
seconds.
• TCP Session Cleanup Latency (seconds)—Enter the maximum time for a
session to remain in the session table after detecting both FIN flags. This
value ranges from 0 through 4,294,967 seconds. The default is 10 seconds.
STEP 2 Click Save to save your settings, or click Cancel to reload the page with the
current settings.

Cisco Small Business RV220W Specifications

General

Firewall Type	Stateful packet inspection (SPI)
VPN Support	Yes
DHCP Server	Yes
QoS	Yes
Wireless Speed	300 Mbps
Management	Web-based
LAN Ports	4
Encryption	AES
Security Features	NAT, URL filtering
Power Supply	12V DC
Wireless Standard	802.11n
WAN Ports	1