• FTP: To allow normal mode when using File Transfer Protocol. This is not needed for passive mode. This is enabled by
default.
• IRC: For Direct Client to Client (DCC) transfer when using Internet Relay Chat. You may wish to forward TCP port 113 for
incoming identd (RFC 1413) requests.
6.4.6 Firewall Options (Advanced)
Anti-Spoof: Anti-Spoof checks help protect
against malicious users faking the source
address in packets they transmit in order to
either hide themselves or to impersonate
someone else. Once the user has spoofed
their address they can launch a network attack without revealing the true source of the attack or attempt to gain access to network
services that are restricted to certain addresses.
6.4.7 Remote Administration Access Control (Advanced)
Enable Remote Administration Access
Control: Selecting this option allows you to
make remote administration tools available
to only the specified IP addresses. Access
from all other IP addresses will be blocked.
This option only filters IP addresses: you
must enable Remote Management
separately (System Settings →
Administration).
The services affected by this include remote
HTTP, HTTPS, SNMP, and SSH configuration tools. This does not restrict access to LAN-based administration, i.e. devices within
your network still have administration access. The individual remote administration services can be enabled under System Settings
→ Administration --> Remote Management.
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