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Configure System Information
57
Insight Managed 28-Port and 52-Port Gigabit Ethernet Smart Cloud Switches
• Denial of Service ICMP Fragment. Enabling ICMP Fragment DoS prevention
causes the switch to drop ICMP fragmented packets.
• Denial of Service SIP=DIP. Enabling SIP=DIP DoS prevention causes the switch to
drop packets with a source IP address equal to the destination IP address.
• Denial of Service SMAC=DMAC. Enabling SMAC=DMAC DoS prevention causes
the switch to drop packets with a source MAC address equal to the destination MAC
address.
• Denial of Service TCP FIN&URG&PSH. Enabling TCP FIN & URG & PSH DoS
prevention causes the switch to drop packets with TCP Flags FIN, URG, and PSH set
and TCP sequence number equal to 0.
• Denial of Service TCP Flag&Sequence. Enabling TCP Flag DoS prevention causes
the switch to drop packets with TCP control flags set to 0 and TCP sequence number
set to 0.
• Denial of Service TCP Fragment. Enabling TCP Fragment DoS prevention causes
the switch to drop packets with a TCP payload for which the IP payload length minus
the IP header size is less than the minimum allowed TCP header size.
• Denial of Service TCP Offset. Enabling TCP Offset DoS prevention causes the
switch to drop packets with a TCP header offset set to 1.
• Denial of Service TCP Port. Enabling TCP Port DoS prevention causes the switch to
drop packets for which the TCP source port is equal to the TCP destination port.
• Denial of Service TCP SYN. Enabling TCP SYN DoS prevention causes the switch
to drop packets with TCP flags SYN set.
• Denial of Service TCP SYN&FIN. Enabling TCP SYN & FIN DoS prevention causes
the switch to drop packets with TCP flags SYN and FIN set.
• Denial of Service UDP Port. Enabling UDP Port DoS prevention causes the switch
to drop packets for which the UDP source port is equal to the UDP destination port.
7. Click the Apply button.
Your settings are saved.
Configure DNS Settings
You can configure information about DNS servers that the network uses and how the switch
operates as a DNS client.
Configure Global DNS Settings
You can configure global DNS settings and DNS server information.
 To configure the global DNS settings:
1. Connect your computer to the same network as the switch.
You can use a WiFi or wired connection to connect your computer to the network, or
connect directly to a switch that is off-network using an Ethernet cable.
2. Launch a web browser.
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