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Barracuda CloudGen Firewall

Live Page

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The Live tab lets you view and filter real-time information for the traffic that passes through the Barracuda NextGen Firewall. You can also manage the traffic sessions. To access the Live page, click the FIREWALL tab and select the Live icon in the ribbon bar.

Video

To get a feel for how to use the FIREWALL > Live page in NextGen Admin, watch the following video:

The Live tab provides three separate sections:

  • Session Details
  • Work Processes
  • Traffic Meter

fw_live_01.png

The Live page provides the following information for each session: 

  • ID – The icons indicating the amount of traffic (Low to High...). The number provided is the unique access ID for the connection.
  • State – The connection status: One-way traffic; connection established (TCP); two-way traffic (all other); connection could not be established; closing connection. The icon next to the status symbol indicates the application policy.
  • IP Protocol – The protocol used. For example, TCP, UDP, or ICMP.
  • Application Context – The context of the affected application.
  • Application – The name of the affected application.
  • File Content – The content of the affected file.

  • Rule – The name of the affected firewall rule.
  • Type – The origin, as specified by the following abbreviations:
    • LIN – Local In. The incoming traffic on the box firewall.
    • LOUT – Local Out. The outgoing traffic from the box firewall.
    • LB – Loopback. The traffic via the loopback interface.
    • FWD – Forwarding. The outbound traffic via the Forwarding Firewall.
    • IFWD – Inbound Forwarding. The inbound traffic to the firewall.
    • PXY – Proxy. The outbound traffic via the proxy.
    • IPXY – Inbound Proxy. The inbound traffic via the proxy.
    • TAP – Transparent Application Proxying. The traffic via stream forwarding.
  • Source – The source IP address.
  • Src. Port – The source port.
  • Src./Dst. Prefix – The source/destination prefix.
  • Destination – The destination IP address.
  • Port – The destination port (or internal ICMP ID).
  • User – The username of the affected user and group.
  • bit/s – The bits per second (during the last second).
  • Idle – Time since the last data transfer.
  • Total – The total number of bytes transferred over this connection.
  • In – The total number of bytes transferred over this connection from the source.
  • Out – The total number of bytes transferred over this connection to the source.
  • Start – Time since the connection was established.
  • SNAT – The source NAT address.
  • DNAT – The destination NAT address.
  • Output-IF – The outgoing interface.
  • Policy – The affected policy. For descriptions of the available policies, see the Policy Overview section below.
  • QoS – QoS band used by this session.
  • FWD Shape – The forward Traffic Shaping (IN/OUT). The shape connectors for ingress and egress shaping, respectively, in the forward direction. Ingress shaping takes place at the inbound interface. Egress shaping takes place at the outbound interface.
  • REV Shape – The reverse Traffic Shaping (IN/OUT).
  • Protocol – The affected protocol.
  • User Agent  User agent for HTTP and HTTPS connections.
  • Status – The status of the connection. For descriptions of the available status types, see Status Overview below.
  • Src./Dst. Geo – The geographic source/destination of the active connection.
  • TI ID – The transport rating setting (Bulk, Quality, or Fallback with IDs 0-7). For more information, see Traffic Shaping below.
  • URL Category – Category of the destination URL.

Filter Options

You can filter the list of sessions by traffic type, status, and properties. Click the Filter icon on the top right of the ribbon bar to access the filtering options.

filter_options.png

  1. Click the Filter icon.
  2. Select New Filter. The Traffic Selection section opens on the top left of the list.
  3. Expand the Traffic Selection drop-down menu and select the required check boxes: 
    • Forward – Sessions handled by the Forwarding Firewall.
    • Loopback – System internal data exchanged by the loopback interface.
    • Local In – Incoming sessions handled by the box firewall.
    • Local Out – Outgoing sessions handled by the box firewall.
    • IPv4 – IPv4 traffic.
    • IPv6 – IPv6 traffic.
  4. From the Status Selection list, you can select the following options to filter for certain traffic statuses:
    • Closing – Closing connections.
    • Established – Established connections.
    • Failing  Failed connections.
    • Pending – Connections currently being established.
  5. To define more filters for specific properties:
    1. Click the + icon.
    2. Select the required criteria.
    3. Select or enter the value in the blank field.

Some fields allow the use of wildcards (*?; !*?). Example: !Amazon* excludes all entries starting with Amazon; Y*|A* includes all entries starting with "Y" or "A".

Clicking the Sync Filter icon on the top right of the ribbon bar above the filters allows you to switch to the History Page but with the same filters applied.

Managing Sessions

You can view additional information for a specific session by double-clicking an entry.

sessions.png

You can control, copy, print, export, and organize the sessions listed on the Firewall > Live page. When you right-click a session, you are provided with the following options: 

  • Terminate Session – Ends the session.
  • Abort Session (No TCP RST) – Ends the session without a TCP request.
  • Change QoS / Reverse QoS – Lets you change the QoS band. For more information, see Traffic Shaping below.
  • Toggle Trace – The selected connections are immediately traced, and you will be able to see all data transferred within these connections in the Trace view. To stop tracing, select the traced connections, and select Toggle Trace again.
  • Change TI Settings – Lets you change the Traffic Intelligent settings. For more information, see Traffic Intelligence below.
  • Show Session Details – Displays the session details.

For more settings, see: Barracuda NextGen Admin

Work Processes

In the lower left of the Live page, you can view and control firewall-related processes and workers. To access the status, click >> Show Proc on the lower left of the window.

fw_live_02.png

The entry Active displays the currently active worker processes. The feature Kill Selected is used for terminating single workers. 

fw_live_03.png

The entry on the right of the Kill Selected button shows the status of the synchronization in case of active transparent failover. For more Information, see High Availability.

The following possible states are available: 

  • Active Sync (UP) – Shown on active HA partner; synchronization works.
  • Active Sync (DOWN) – Shown on active HA partner; sync would work, but box firewall is down.
  • Passive Sync (UP) – Shown on passive HA partner; synchronization works.
  • Passive Sync (DOWN) – Shown on passive HA partner; sync would work, but box firewall is down.

The window provides the following information about the processes: 

  • PID – System process ID.
  • Connections – Number of connections handled by worker.
  • bps – Bytes per second (during the last second).
  • Heartbeat – Time in seconds the process stopped to answer. Should never be more than 2.
  • PID  System process ID. Allows view on PID and fully extended description column.
  • Description – Role description of worker.

Traffic Meter

A traffic meter is integrated on the lower right of the page. The firewall engine samples the amount of traffic over 10 seconds, and the traffic meter displays it based on the traffic origin (Forward, Loopback, Local, Total). Traffic can be displayed as Bits/sec, Bytes/sec, or Packets/sec.

fw_live_04.png

The second available view is TF Sync (click the Traffic drop-down arrow) and contains detailed information concerning the Transparent Failover function of an HA Forwarding Firewall. The pull-down menu for the statistics type (with the options Bits/secBytes/sec and Packets/sec) has no function for this type of view. The display consists of the following entries: 

  • My Sync Addr – IP address and connection port for synchronization of this box.
  • Partner Sync Addr – IP address and connection port for synchronization of the HA partner box.
  • Synced Sessions – Number of sessions successfully synchronized.
  • Pending Sessions – Number of pending sessions not synchronized.

Status Overview

This table provides descriptions of the possible statuses displayed in the Status column for each session on the Firewall > Live page:

Status NameOriginDescription
FWD-NEW 

TCP Packet Forwarding Outbound

The session is validated by the firewall ruleset. Traffic has not been forwarded yet.

FWD-FSYN-RCV 

TCP Packet Forwarding Outbound

The initial SYN packet received from the session source was forwarded.

FWD-RSYN-RSV

TCP Packet Forwarding Outbound

The session destination answered the SYN with a SYN/ACK packet.

FWD-EST 

TCP Packet Forwarding Outbound

The SYN/ACK packet was acknowledged by the session source. The TCP session is established.

FWD-RET 

TCP Packet Forwarding Outbound

Either source or destination are retransmitting packets. The connection might be dysfunctional.

FWD-FFIN-RCV 

TCP Packet Forwarding Outbound

The session source sent a FIN datagram to terminate the session.

FWD-RLACK 

TCP Packet Forwarding Outbound

The session destination answered the FIN packet with a FIN reply and awaits the last acknowledgement for this packet.

FWD-RFIN-RCV 

TCP Packet Forwarding Outbound

The session destination sent a FIN datagram to terminate the session.

FWD-FLACK 

TCP Packet Forwarding Outbound

The session source answered the FIN packet with a FIN reply and awaits the last acknowledgement for this packet.

FWD-WAIT 

TCP Packet Forwarding Outbound

The session was reset by one of the two participants by sending an RST packet. During a wait period of five seconds, all packets belonging to the session will be discarded.

FWD-TERM 

TCP Packet Forwarding Outbound

The session is terminated and will be removed from the session list.

IFWD-NEW 

TCP Packet Forwarding Inbound

The session is validated by the firewall ruleset. Traffic has not been forwarded yet.

IFWD-SYN-SND 

TCP Packet Forwarding Inbound

A SYN packet was sent to the destination initiating the session. Note that the session with the source is already established.

IFWD-EST 

TCP Packet Forwarding Inbound

The destination replied to the SYN with a SYN/ACK. The session is established.

IFWD-RET 

TCP Packet Forwarding Inbound

Either source or destination are retransmitting packets. The connection might be dysfunctional.

IFWD-FFIN-RCV 

TCP Packet Forwarding Inbound

The session source sent a FIN datagram to terminate the session.

IFWD-RLACK 

TCP Packet Forwarding Inbound

The session destination answered the FIN packet with a FIN reply and awaits the last acknowledgement for this packet.

IFWD-RFIN-RCV 

TCP Packet Forwarding Inbound

The session destination sent a FIN datagram to terminate the session.

IFWD-FLACK 

TCP Packet Forwarding Inbound

The session source answered the FIN packet with a FIN reply and awaits the last acknowledgement for this packet.

IFWD-WAIT 

TCP Packet Forwarding Inbound

The session was reset by one of the two participants by sending an RST packet. During a wait period of five seconds, all packets belonging to the session will be discarded.

IFWD-TERM 

TCP Packet Forwarding Inbound

The session is terminated and will be removed from the session list.

PXY-NEW 

TCP Stream Forwarding Outbound

The session is validated by the firewall ruleset. Traffic has not been forwarded yet.

PXY-CONN 

TCP Stream Forwarding Outbound

A socket connection to the destination is being established.

PXY-ACC 

TCP Stream Forwarding Outbound

A socket connection to the source is being accepted.

PXY-EST 

TCP Stream Forwarding Outbound

Two established TCP socket connections to the source and destination exist.

PXY-SRC-CLO 

TCP Stream Forwarding Outbound

The socket to the source is closed or is in the closing process.

PXY-DST-CLO 

TCP Stream Forwarding Outbound

The socket to the destination is closed or is in the closing process.

PXY-SD-CLO 

TCP Stream Forwarding Outbound

The source and the destination socket are closed or in the closing process.

PXY-TERM 

TCP Stream Forwarding Outbound

The session is terminated and will be removed from the session list.

IPXY-NEW 

TCP Stream Forwarding Inbound

The session is validated by the firewall ruleset. Traffic has not been forwarded yet.

IPXY-ACC 

TCP Stream Forwarding Inbound

A socket connection to the source is being accepted.

IPXY-CONN 

TCP Stream Forwarding Inbound

A socket connection to the destination is being established.

IPXY-EST 

TCP Stream Forwarding Inbound

Two established TCP socket connections to the source and destination exist.

IPXY-SRC-CLO 

TCP Stream Forwarding Inbound

The socket to the source is closed or is in the closing process.

IPXY-DST-CLO 

TCP Stream Forwarding Inbound

The socket to the destination is closed or is in the closing process.

IPXY-SD-CLO 

TCP Stream Forwarding Inbound

The source and the destination socket are closed or in the closing process

IPXY-TERM 

TCP Stream Forwarding Inbound

The session is terminated and will be removed from the session list.

UDP-NEW 

UDP Forwarding

The session is validated by the firewall ruleset. Traffic has not been forwarded yet.

UDP-RECV 

UDP Forwarding

Traffic has been received from the source and was forwarded to the destination.

UDP-REPL 

UDP Forwarding

The destination replied to the traffic sent by the source.

UDP-SENT 

UDP Forwarding

The source transmitted more traffic after receiving a reply from the destination.

UDP-FAIL 

UDP Forwarding

The destination or a network component on the path to the destination sent an ICMP indicating that the request cannot be fulfilled.

ECHO-NEW 

ECHO Forwarding

The session is validated by the firewall ruleset. Traffic has not been forwarded yet.

ECHO-RECV 

ECHO Forwarding

Traffic has been received from the source and forwarded to the destination.

ECHO-REPL 

ECHO Forwarding

The destination replied to the traffic sent by the source.

ECHO-SENT 

ECHO Forwarding

The source sent more traffic after receiving a reply from the destination.

ECHO-FAIL 

ECHO Forwarding

The destination or a network component on the path to the destination sent an ICMP indicating that the request cannot be fulfilled.

OTHER-NEW 

OTHER Protocols Forwarding

The session is validated by the firewall ruleset. Traffic has not been forwarded yet.

OTHER-RECV 

OTHER Protocols Forwarding

Traffic has been received from the source and forwarded to the destination.

OTHER-REPL 

OTHER Protocols Forwarding

The destination replied to the traffic sent by the source.

OTHER-SENT 

OTHER Protocols Forwarding

The source sent more traffic after receiving a reply from the destination.

OTHER-FAIL 

OTHER Protocols Forwarding

The destination or a network component on the path to the destination sent an ICMP indicating that the request cannot be fulfilled.

LOC-NEW 

Local TCP Traffic

A local TCP session was granted by the local ruleset.

LOC-EST 

Local TCP Traffic

The local TCP session is fully established.

LOC-SYN-SND 

Local TCP Traffic

A Local-Out TCP session is initiated by sending a SYN packet.

LOC-SYN-RCV 

Local TCP Traffic

A Local-In TCP session is initiated by receiving a SYN packet.

LOC-FIN-WAIT1 

Local TCP Traffic

An established local TCP session started the closing process by sending a FIN packet.

LOC-FIN-WAIT2 

Local TCP Traffic

A local TCP session in the FIN-WAIT1 state received an ACK for the FIN packet.

LOC-TIME-WAIT 

Local TCP Traffic

A local TCP session in the FIN-WAIT1 or in the FIN-WAIT2 state received a FIN packet.

LOC-CLOSE 

Local TCP Traffic

An established local TCP session is closed.

LOC-CLOSE-WAIT

Local TCP Traffic

An established local TCP session received a FIN packet.

LOC-LAST-ACK 

Local TCP Traffic

Application holding an established TCP socket responded to a received FIN by closing the socket. A FIN is sent in return.

LOC-LISTEN Local TCP Traffic

A local socket awaits connection request (SYN packets).

LOC-CLOSING Local TCP Traffic

A local socket in the FIN_WAIT1 state received a FIN packet.

LOC-FINISH Local TCP Traffic

A local TCP socket was removed from the internal socket list.

Policy Overview

This table provides descriptions of the possible policies that you might see in the Policy column for each session on the Firewall > Live page:

PolicyDescription
NO_MATCH_IIFThe received packet (Forward Direction) must NOT match initial input interface.
NO_MATCH_OIFThe received packet (Reverse Direction) must NOT match initial output interface.
INBOUNDThe Inbound Accept Policy is used.
FWD_FILTERThe content filter is applied for forward traffic.
REV_FILTERThe content filter is applied for reverse traffic.
TRACEThe session is traced.
NOTIFY_CONECTThe Firewall Service is notified about successful or failing TCP establishment. These notifications are required for multiple redirection status.
Source-Based NATThe bind IP address is determined by the routing table.
NOLOGLog file entries are not generated by the session.
NOSTATStatistics are not generated by the session.
NOCACHEAn access cache entry is not generated by the session.
NONAGLEThe Nagle algorithm is turned OFF.
LOG_STATEEvery state change of this session is logged.
OWN_LOGThe session will log to the firewall rule log file.
SRVSTATThe session resolves service object names when generating statistics.
DYNAMIC_PORTThe session is dynamically NAT'd. The outgoing source port will differ from the original client port.
NOSYNCThe session is not synchronized for transparent failover.
CLEAR_ECNThe session clears any ECN bits in the IP header.
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