- Foundry Router User Guide

Security Features
June 2004 © 2004 Foundry Networks, Inc. 15 - 65
Tunneling Default Values
This section provides the IP-IP and GRE tunneling protocol default values.
Win Nuke Attack Check Disabled
IP Unaligned Time stamp check Disabled
TCP Sequence Number
Prediction Check
Disabled
TCP Sequence Number Range
Check
Disabled
FTP Bounce Check Disabled
Table 15.11: Tunnel Interface Defaults
Parameter Default Value
IP Address No Default
Tunnel Source No Default
Tunnel Destination No Default
MTU 1476 - Not configurable
ICMP unreachable Enabled
ICMP redirect Enabled
Crypto/Tunnel Protection Disabled
Tunnel TTL 30
Keepalive Disabled
Tunnel Mode GRE
Tunnel TOS Copy from Inner
Tunnel Path Mtu Discovery Disabled
Tunnel Sequence Disabled
Tunnel Checksum Disabled
Tunnel Key Disabled
Shutdown Disabled
Table 15.10: DoS Protection Defaults (Configured DoS Attacks)