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123 lines
7.0 KiB
ReStructuredText
123 lines
7.0 KiB
ReStructuredText
===========
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Diagnostics
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===========
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-----------------------------------------
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Aliases
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-----------------------------------------
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Detailed insight into loaded aliases and their content. When an alias has **Statistics** enabled, it will show these
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too.
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It's also possible to manually adjust the contents, using **Quick add address** or the delete button.
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.. Note::
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When deleting items, keep in mind that the regular update process might put the address (or network) back in, since
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deletion isn't persistent.
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.. Tip::
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Use "Find references" to check if an address would match any configured aliases, which is very practical for debugging
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purposes, since it will also check if an address fits a network (such as 10.0.0.2 fits in 10.0.0.0/24).
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-----------------------------------------
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Sessions
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-----------------------------------------
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Utilises `pftop <https://www.freebsd.org/cgi/man.cgi?query=pftop>`__ to offer a detailed view on the active sessions
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and their traffic counters.
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The following fields are available in the grid:
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==========================================================================================================================
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========================= ================================================================================================
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Dir Direction (in :code:`->` or out :code:`<-`)
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Proto Protocol in question
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Source Source address and port
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Gateway Address and port this session is being translated too using NAT
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Destination Destination address and port
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State State at source:destination, see tables in States section
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Age (sec) The number of seconds since the state is created
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Expires (sec) The number of seconds left before the state expires.
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Pkts Number of packets processed by the state
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Bytes Number of bytes processed by the state
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Rule Rule this state (most likely) belongs to
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========================= ================================================================================================
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-----------------------------------------
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States
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-----------------------------------------
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Insight into the state table (pf), offers the ability to search for specific states and removal.
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It is also possible to reset all states and/or the source tracking tables from here, especially the state table
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reset should be used with care as it drops all active connections.
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.. Note::
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The state table tries to connect states to rules, but since these are refered to by rule number (sequence) in :code:`pf(4)`
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these aren't always accurate after changes to the rules.
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The following fields are available in the grid:
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==========================================================================================================================
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========================= ================================================================================================
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State id Unique internal identifier describing the state and the origin (creator)
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Int Bound to which interface, by default this is all unless " Bind states to interface" is set
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in :menuselection:`Firewall->Settings->Advanced`
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Dir Direction (in :code:`->` or out :code:`<-`)
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Proto Protocol in question
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Source Source address and port
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Nat Address and port this session is being translated too using NAT
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Destination Destination address and port
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State State at source:destination,
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see next tables for lists of states and their explanations available
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Rule Rule this state (most likely) belongs to
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Command Button to drop a specific state (State id)
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========================= ================================================================================================
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List of available TCP states (as defined by `RFC 793 <https://www.rfc-editor.org/rfc/rfc793>`__)
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==========================================================================================================================
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========================= ================================================================================================
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LISTEN Represents waiting for a connection request from any remote TCP and port.
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SYN_SENT Represents waiting for a matching connection request after having sent a connection request.
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SYN_RCVD Represents waiting for a confirming connection request acknowledgment
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after having both received and sent a connection request.
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ESTABLISHED Represents an open connection, data received can be delivered to the user.
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The normal state for the data transfer phase of the connection.
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FIN_WAIT_1 Represents waiting for a connection termination request from the remote TCP,
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or an acknowledgment of the connection termination request previously sent.
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FIN_WAIT_2 Represents waiting for a connection termination request from the remote TCP.
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CLOSE_WAIT Represents waiting for a connection termination request from the local user.
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CLOSING Represents waiting for a connection termination request acknowledgment from the remote TCP.
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LAST_ACK Represents waiting for an acknowledgment of the connection termination request
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previously sent to the remote TCP (which includes an acknowledgment of
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its connection termination request).
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TIME_WAIT Represents waiting for enough time to pass to be sure the remote TCP received the
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acknowledgment of its connection termination request.
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CLOSED Represents no connection state at all
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==========================================================================================================================
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List of available UDP/Other states (man `pf.conf(5) <https://www.freebsd.org/cgi/man.cgi?pf.conf(5)>`__)
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==========================================================================================================================
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========================= ================================================================================================
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NO_TRAFFIC No traffic for this direction
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SINGLE The state if the source host sends more than one packet but the destination host has never sent one back.
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MULTIPLE The state if both hosts have sent packets.
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========================= ================================================================================================
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-----------------------------------------
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Statistics
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-----------------------------------------
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Various detailed statistics gathered from `pfctl <https://www.freebsd.org/cgi/man.cgi?query=pfctl>`__,
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such as packet counters per interface, memory limits, configured timeouts and detailed active rules.
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