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User Guide for Cisco Security Manager 4.4
OL-28826-01
Chapter 23 Configuring Network Address Translation
NAT Policies on Cisco IOS Routers
UDP Timeout (sec.) The timeout value applied to User Datagram Protocol (UDP) ports. The
default is 300 seconds (5 minutes).
Note This value applies only when Port Translation (Overload) is
enabled for a dynamic NAT rule; see NAT Dynamic Rule
Dialog Box, page 23-11.
DNS Timeout (sec.) The timeout value applied to Domain Naming System (DNS) server
connections. The default is 60 seconds.
Note This value applies only when Port Translation (Overload) is
enabled for a dynamic NAT rule; see NAT Dynamic Rule
Dialog Box, page 23-11.
TCP Timeout (sec.) The timeout value applied to Transmission Control Protocol (TCP)
ports. The default is 86400 seconds (24 hours).
Note This value applies only when Port Translation (Overload) is
enabled for a dynamic NAT rule; see NAT Dynamic Rule
Dialog Box, page 23-11.
FINRST Timeout (sec.) The timeout value applied when a Finish (FIN) packet or Reset (RST)
packet (both of which terminate connections) is found in the TCP
stream. The default is 60 seconds.
Note This value applies only when Port Translation (Overload) is
enabled for a dynamic NAT rule; see NAT Dynamic Rule
Dialog Box, page 23-11.
ICMP Timeout (sec.) The timeout value applied to Internet Control Message Protocol
(ICMP) flows. The default is 60 seconds.
Note This value applies only when Port Translation (Overload) is
enabled for a dynamic NAT rule; see NAT Dynamic Rule
Dialog Box, page 23-11.
PPTP Timeout (sec.) The timeout value applied to NAT Point-to-Point Tunneling Protocol
(PPTP) flows. The default is 86400 seconds (24 hours).
Note This value applies only when Port Translation (Overload) is
enabled for a dynamic NAT rule; see NAT Dynamic Rule
Dialog Box, page 23-11.
SYN Timeout (sec.) The timeout value applied to TCP flows after a synchronous
transmission (SYN) message (used for precise clocking) is
encountered. The default is 60 seconds.
Note This value applies only when Port Translation (Overload) is
enabled for a dynamic NAT rule; see NAT Dynamic Rule
Dialog Box, page 23-11.
Table 23-4 NAT Timeouts Tab (Continued)
Element Description