Glossary

• 2.4 GHz / 5 GHz — Radio bands supported; band selection depends on hardware mode and bandwidth settings.
• 802.11a/b/g/n/ac — WiFi standards supported; selectable via hardware mode and bandwidth options.
• Access Point (AP) — Mode where the router provides WiFi for clients to join.
• AnyNet Connectivity Service — Eseye's global cellular service for IoT deployments.
• APN (Access Point Name) — Network identifier the device uses to connect to a carrier's data service; configured per cellular profile.
• Auto MDI/MDIX — Ethernet feature that autocrosses pairs so standard cables work for either role.
• AWS IOT — Amazon Web Services Internet Of Things
• Bandwidth — Channel width that affects data rates and spectrum use.
• Channel (Auto/Manual) — RF channel used by the radio; availability depends on country and mode.
• CLI — Command-line interface accessible via SSH when permitted.
• Client Certificate — A digital certificate that verifies a device or user's identity to a server.
• Default Route Priority / Metric — Numeric weight that prefers one default route over another when multiple exist.
• DER — A file format containing the X.509 certificate encoded in binary form.
• DHCP — Protocol that automatically assigns IP configuration; the router can run a DHCP server for LAN devices.
• DIN rail Mounting — Optional kit for mounting the device on DIN rails (bottom/sideways).
• DNS (Domain Name System) — Resolves hostnames to IP addresses; also used in connectivity tests.
• eSIM — Embedded SIM built into the device; Hera 204 also has a removable SIM slot.
• eUICC — SIM technology that supports remote provisioning of multiple profiles.
• Firewall — Built-in packet filtering to control inbound and outbound traffic.
• Firmware — Operating software running on the router; reported in System Status.
• Gateway — Next-hop address used to reach networks outside the local subnet.
• GUI — Web-based management interface (Graphical User Interface).
• Health Monitor — Connectivity monitoring that can restart interfaces, switch profiles, or reboot to restore service.
• Hostname — Name assigned to the router for identification on the network.
• HTTPS / HTTP — Encrypted (443) and unencrypted (80) web access referenced in firewall examples and blocks.
• ICCID — Integrated Circuit Card Identifier; unique identifier of a SIM card.
• IMEI — International Mobile Equipment Identity; unique identifier for the modem hardware.
• IMSI — International Mobile Subscriber Identity; identifies the subscriber on the cellular network.
• Inbound Rules — Open or restrict access to services on the router (e.g., HTTPS 443, SSH 22, ICMP Ping).
• Infinity Platform — Eseye's platform for consolidated billing and security features for IoT.
• IPv4 / IPv6 — Internet Protocol versions referenced for name resolution and connectivity options.
• Kernel — Linux kernel version currently running on the device.
• LAN (Local Area Network) — Local network segment for client devices connected to the router.
• MAC Filter (Allow/Deny) — Whitelist/blacklist of client MAC addresses permitted to associate.
• MCC/MNC — Mobile Country Code and Mobile Network Code used to specify a particular cellular provider.
• MTU — Maximum Transmission Unit; size parameter available when using PPPoE.
• NAT (Network Address Translation) — Translates private LAN addresses to a public/WAN address.
• Netmask / Subnet mask — Defines the size of an IP network (e.g., 255.255.255.0).
• NTP (Network Time Protocol) — Synchronizes the router's system time with configured servers; client/server options available.
• Outbound Rules — Restrict LAN clients from reaching specific IPs/ports/protocols.
• PEM — A file format containing the X.509 certificate encoded in text form (base64 and encrypted).
• Port Forwarding / Redirection — Maps an external WAN port to a specific LAN IP/port to enable remote access.
• Power Supply (LPS, 9–24 VDC) — Uses a Limited Power Source adapter; accepts 9–24 VDC input (12 V wall adapter supplied).
• Private Key — A secret cryptographic key used to decrypt data and prove identity via digital signatures.
• Protocols: TCP, UDP, ICMP, ESP — Transport/network protocols selectable in firewall rules.
• Reboot / Factory Reset — Maintenance actions to restart the router or restore factory defaults (via UI or reset button).
• Reset Button — Physical button that can reboot or trigger a factory reset depending on press duration.
• Root CA — A trusted authority at the top of a certificate chain that signs and validates other certificates.
• RSSI — Received Signal Strength Indicator; cellular signal level reported in dBm.
• Security (WEP, WPA-PSK, WPA-PSK2) — Encryption/authentication options for protecting the WiFi network.
• SIM PIN — Optional numeric code that protects a SIM; incorrect entry may block the SIM.
• SMA Antenna Connectors (50 Ω) — RF connectors for cellular (primary/diversity) and WiFi antennas.
• SSH — Secure remote login protocol; used to access the router's CLI when enabled.
• SSID (Service Set Identifier) — WiFi network name clients see and join; requires a passphrase when security is enabled.
• SSID Visibility (Broadcast/Hidden) — Controls whether the SSID is visible in scans or must be entered manually.
• Static Route — Manually configured route specifying destination, mask, interface, gateway, and cost.
• Status LEDs (Power, WiFi, WAN, Signal) — Indicators for power/software state, WiFi/WAN availability/activity, and cellular signal strength.
• Thing (AWS IoT) — A virtual representation of a physical device within AWS IoT used for identity and management.
• Uptime — Time elapsed since the device last booted.
• URL — The web address used to locate and access a resource on a network.
• WAN (Wide Area Network) — External network used to reach the internet or upstream networks.
• Wireless Client / STA mode — Mode where the device connects to another WiFi network as a client.