Information about networks and hosts connected to this unit.

Refresh automatically... - To always view the latest information, and to see the trafic bars in real time, click this link to start automatic updating of the page.

Network Status
Overview of all network hosts attached to your unit, and their status. The list is compiled of all the hosts known to the different subsystems of this unit, such as ARP table, route table, DNS server, DNS cache, DHCP server, SIP proxy, etc. and is updated dynamically each time a new host is connected.

 Bars
Indicates traffic. Position mouse pointer on bar to view numerical values of bits/second and flows.
Length of the bar indicates the amount of data trafic to/from the host. The data trafic is measured in BITS per second IP trafic (divide with 8 to get BYTES per second), and it is an average value of the traffic since the last refresh of the page.
Thickness of the bar indicates number of flows open to this host.
TIP: Klick "Refresh automatically..." to see the data trafic in real time.

Interfaces - Displays status of this unit's active interfaces.
WAN interfaces are listed above the back side image of the unit.
LAN interfaces are listed below the back side image of the unit. Interfaces not listed have no active clients connected.
The traffic bar for an interface shows ALL Ethernet traffic going through that interface (both send and receive), including broadcasts, multicasts, control packets, etc.

Icons - Displays online status. Click on an icon to view more information about that host.
- this is the host you are sitting at.
- a directly connected host that is online (turned on). Directly means on the same subnet, thus there might still be hubs or switches inbetween.
- a directly connected host that is offline (turned off / unavailable).
- a gateway that is online. Gateways connect networks together into the Internet. NOTE: The trafic bar of a gateway only shows trafic to/from the gateway itself - not trafic the gateway is supposed to forward.
- a gateway that is offline (unavailable). You cannot reach networks behind an offline gateway.
- a remote host. As this host is behind a gateway, not on the same subnet, online/offline status is undeterminable. TIP: Click on the host icon. If the appearing Host info page states ping OK then the host is online. If ping failed the host might be offline or not answering to pings.
- one or more SIP users registered on host. Position mouse pointer on the icon to see the list of registered SIP users.
- one or more SIP calls (media streams) currently in progress from host.

IP address of host: Italics indicates IP address given by this unit's DHCP server.

Name - the host's DNS-name.

Advanced:

Routing table, ARP table - See general litterature on TCP/IP, ARP and routing to understand these tables..
DHCP server - List of assignments in the DHCP server database. PC with listed MAC address will receive stated IP address upon request.

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Network Status

The Host Information page displays detailed status information about a network equipment connected to this unit.

Status
Ping - a method used to discover if a network equipment is online or not. A ping request is sent to the IP address. PCs answering to ping are online. NOTE: Some network equipment may not answer to ping but still be online.
ARP - another method used to discover if a network equipment is online or not. An arp request is sent to the IP address. All network equipment do answer to ARP requests with their MAC address. NOTE: ARP only works with hosts connected directly (through hubs and switches). Hosts connected indirectly (through gateways and proxys) do not answer to ARP requests but may still be online.

SIP Users
List of all SIP users registered on this host.

Flows
List of all hosts this host is connected to. A "flow" is a stateful inspected data stream through the firewall - flows are used to get data through a firewall. A flow is opened when data is begun transmitted, and generally closed about 1-5 minutes after data transmission was finished.
NOTE: While most data through the firewall is transferred through flows, there are other data (such as eg. VPN tunnels) transferred without usage of flows. Data transferred without flows are NOT visible here.

# - number of such flows open to same host.

bytes - sum of bytes transferred within those flows, since those flows were opened.

Protocol - transfer protocol used by the data in the flows.

To IP:port - IP address and port of remote machine the flows go to.
To find out which machine has that IP address, either enter the IP address into the Address field of a web browser, or use WHOIS

Read more online:
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