104
begin to receive file,wait...
recv 1526037
************************
write ok
transfer complete
close tftp client.
If the switch is upgrading system file or system start up file through TFTP, the switch must
not be restarted until “close tftp client” is displayed, indicating upgrade is successful,
otherwise the switch may be rendered unable to start. If the system file and system start
up file upgrade through TFTP fails, please try upgrade again or use the BootROM mode
to upgrade
2.6 Security Feature Configuration
2.6.1 Security Feature Introduction
Before introducing the security features, we here first introduce the DoS. The DoS is
short for Denial of Service, which is a simple but effective destructive attack on the
internet. The server under DoS attack will drop normal user data packet due to non-stop
processing the attacker’s data packet, leading to the denial of the service and worse can
lead to leak of sensitive data of the server.
Security feature refers to applications such as protocol check which is for protecting
the server from attacks such as DoS. The protocol check allows the user to drop matched
packets based on specified conditions. The security features provide several simple and
effective protections against Dos attacks while acting no influence on the linear
forwarding performance of the switch.
2.6.2 Security Feature Configuration
2.6.2.1 Prevent IP Spoofing Function Configuration Task Sequence
1
．
Enable the IP spoofing function.
Command Explanation
Global Mode
