ADTRAN SmartRG SR555ac User Manual page 36

Field Name
Bridge PPPoE Frames
Between WAN and Local
Ports
Enable Firewall
Enable SYN Flood rules
Network Address Translation Settings
Enable NAT
Enable Fullcone NAT
Enable SIP ALG
Port Control Protocol Mode PCP is a computer networking protocol that allows hosts on IPv4 or IPv6 networks to
PCP Server
IGMP Multicast
Enable IGMP Multicast
Proxy
Enable IGMP Multicast
Source
MLD Multicast
Enable MLD Multicast
Proxy
Enable MLD Multicast
Source
MTU size
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Description
Select to enable PPPoE passthrough to relay PPPoE connections from behind the
modem. Also known as Half-Bridged mode.
This option is enabled by default. To disable the firewall, clear the checkbox.
Select to enable rules for preventing SYN flood distributed denial of service attacks.
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This option is enabled by default. To disable NAT (Network Address Translation), clear
the checkbox.
Click to enable "one-to-one" NAT. All requests from the same internal IP address and
port are mapped to the same external IP address and port. In addition, any external
host can send a packet to the internal host by sending a packet to the mapped external
address.
Warning: Enabling this option will disable network acceleration and some security
settings.
Click to enable Session Initiation Protocol (SIP) pass-through NAT. Used for Voice over IP
(VOIP) applications.
control how the incoming IPv4 or IPv6 packets are translated and forwarded by an
upstream router that performs network address translation (NAT) or packet filtering.
Options are Disable,DS-Lite, and NAT444. The default is Disable.
Enter the server name to be used with PCP.
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Click to enable Internet Group Membership Protocol (IGMP) multicast. Used by IPv4
hosts to report multicast group memberships to any neighboring multicast routers.
Click to enable this service to act as an IGMP multicast source.
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(Available only for IPv6 environments) Click to enable MLD multicast. Used by IPv4 hosts
to report multicast group memberships to any neighboring multicast routers.
(Available only for IPv6 environments) Click to enable this service to act as an MLD
multicast source.
Enter the maximum transmission unit size. Options are 1370 - 1492. The default is 1492.
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