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CTRON-NAT-MIB DEFINITIONS ::= BEGIN

        --  ctron-nat-mib.txt  Cabletron Network Address Translator MIB.
        --  Revision: 01.00.00
        --  Part Number: 
        --  Date:  December 16, 1998

        --  Cabletron Systems, Inc.
        --  35 Industrial Way, P.O. Box 5005
        --  Rochester, NH 03866-5005
        --  (603) 332-9400
        --  support@ctron.com

        --  This module provides authoritative definitions for part
        --  of the naming tree below:
        --
        --              cabletron { enterprises 52 }
        --
        --  This module will be extended, as additional sub-sections
        --  of this naming tree are defined.
        --

        --  Cabletron Systems reserves the right to make changes in 
        --  specification and other information contained in this document 
        --  without prior notice.  The reader should consult Cabletron Systems
        --  to determine whether any such changes have been made.
        --
        --  In no event shall Cabletron Systems be liable for any incidental, 
        --  indirect, special, or consequential damages whatsoever (including 
        --  but not limited to lost profits) arising out of or related to this
        --  document or the information contained in it, even if Cabletron
        --  Systems has been advised of, known, or should have known, the 
        --  possibility of such damages.
        --
        --  Cabletron grants vendors, end-users, and other interested parties
        --  a non-exclusive license to use this Specification in connection
        --  with the management of Cabletron products.
        --
        --  Copyright August 1997 Cabletron Systems

    --  Abstract
    --
    --  This memo defines management objects which are required to support
    --  Cabletron's implementation of RFC 1631, The IP Network Address 
    --  Translator (NAT).
 
    --  Structure of MIB
    --
    --  Objects, in this MIB, are arranged into groups.  Each group is organized
    --  as a set of related objects and is described below.
 
    --  The ctNatConfigGroup Group
    --
    --  This group contains the objects that are specific to the configuration,
    --  control and status of network address translation functionality. All of 
    --  the read-write objects are persistent. "Private" refers to a network 
    --  which uses IP addresses which must be translated.  Devices on that 
    --  network are termed "Local".  Their IP addresses are not official, and 
    --  they cannot be accessed from external networks without NAT.  "Public"  
    --  refers to the networks outside the private area which use registered 
    --  IP addresses. It is also called the "Internet".  Devices on the internet 
    --  can be also termed "Foreign".

    --  The ctNatServerGroup Group
    --
    --  This group contains the objects that are specific to the server
    --  list.  The list contains information describing the assignment
    --  of devices on the private network to perform some server functions.
    --  The assignment will make the device accessible to the public network.
    --  Access is obtained by addressing the Internet IP and a predefined port.
          
    --  The ctNatConnStatsGroup Group
    --
    --  This group contains the objects that are specific to the client list.
    --  The list contains information describing some statistics
    --  which are collected for ACTIVE connections.  The data are deleted
    --  when the connection goes inactive.

IMPORTS
      OBJECT-TYPE
        FROM RFC-1212
      nwRtrProtoSuites
        FROM ROUTER-OIDS
      nwIpRouter, nwIpMibs, nwIpComponents, nwIpClientServices
        FROM CTRON-IP-ROUTER-MIB
      IpAddress, Counter
        FROM RFC1155-SMI;


--====================================================================

    ctNat                  OBJECT IDENTIFIER ::= { nwIpClientServices 1 }

    --========       group definitions           =============
 
    ctNatConfigGroup       OBJECT IDENTIFIER ::= { ctNat 1 }

    ctNatServerGroup       OBJECT IDENTIFIER ::= { ctNat 2 }

    ctNatConnStatsGroup    OBJECT IDENTIFIER ::= { ctNat 3 }

--====================================================================

    --
 --========        ctNatConfigGroup group       =============--
    --

        ctNatPublicIfIndex       OBJECT-TYPE
                SYNTAX  INTEGER
                ACCESS  read-write
                STATUS  mandatory
                DESCRIPTION
                "This is the value of the MIB II ifindex which identifies 
                        the router port connected to the public network."
                ::= { ctNatConfigGroup 1}

        ctNatPublicIP   OBJECT-TYPE
                SYNTAX  IpAddress 
                ACCESS  read-only
                STATUS  mandatory
                DESCRIPTION
                        "This is the IP address of the interface which
                        is selected by ctNatPublicIfIndex."
                ::= { ctNatConfigGroup 2 }

        ctNatPublicMask OBJECT-TYPE
                SYNTAX  IpAddress 
                ACCESS  read-only
                STATUS  mandatory
                DESCRIPTION
                        "This is the subnet mask of the interface which
                        is selected by ctNatPublicIfIndex."
                ::= { ctNatConfigGroup 3 }

        ctNatMaxConn       OBJECT-TYPE
                SYNTAX  INTEGER
                ACCESS  read-write
                STATUS  mandatory
                DESCRIPTION
                        "This is the value of the maximum number of simultaneous
                        connections allowed, using the Network Address 
                        Translator application.  The default value is 200.  
                        Acceptable values are from 40 to 1000."
                ::= { ctNatConfigGroup 4}

        ctNatTcpTimeout       OBJECT-TYPE
                SYNTAX  INTEGER
                ACCESS  read-write
                STATUS  mandatory
                DESCRIPTION
                        "This is the value in seconds after which an idle
                        TCP connection will be deleted.  The default value
                        is 300.  Acceptable values are from 60 to 3600."
                ::= { ctNatConfigGroup 5}

        ctNatUdpTimeout       OBJECT-TYPE
                SYNTAX  INTEGER
                ACCESS  read-write
                STATUS  mandatory
                DESCRIPTION
                        "This is the value in seconds after which an idle
                        UDP connection will be deleted.  The default value
                        is 120.  Acceptable values are from 60 to 3600."
                ::= { ctNatConfigGroup 6}

        ctNatPktsL2I       OBJECT-TYPE
                SYNTAX  Counter
                ACCESS  read-only
                STATUS  mandatory
                DESCRIPTION
                        "This is the number of packets which have been forwarded 
                        from the private network to the public network since the
                        last reset."
                ::= { ctNatConfigGroup 7}

        ctNatPktsI2L       OBJECT-TYPE
                SYNTAX  Counter
                ACCESS  read-only
                STATUS  mandatory
                DESCRIPTION
                        "This is the number of packets which have been forwarded 
                        from the public network to the private network since the
                        last reset."
                ::= { ctNatConfigGroup 8}

        ctNatBytesL2I       OBJECT-TYPE
                SYNTAX  Counter
                ACCESS  read-only
                STATUS  mandatory
                DESCRIPTION
                        "This is the number of bytes which have been forwarded 
                        from the private network to the public network since the
                        last reset."
                ::= { ctNatConfigGroup 9}

        ctNatBytesI2L       OBJECT-TYPE
                SYNTAX  Counter
                ACCESS  read-only
                STATUS  mandatory
                DESCRIPTION
                        "This is the number of bytes which have been forwarded
                        from the public network to the private network since the
                        last reset."
                ::= { ctNatConfigGroup 10}

        ctNatTcpConn       OBJECT-TYPE
                SYNTAX  INTEGER
                ACCESS  read-only
                STATUS  mandatory
                DESCRIPTION
                        "This is the number of active TCP connections using
                        the Network Address Translator application."
                ::= { ctNatConfigGroup 11}

        ctNatUdpConn       OBJECT-TYPE
                SYNTAX  INTEGER
                ACCESS  read-only
                STATUS  mandatory
                DESCRIPTION
                        "This is the number of active UDP connections using
                        the Network Address Translator application."
                ::= { ctNatConfigGroup 12}

        ctNatIcmpConn       OBJECT-TYPE
                SYNTAX  INTEGER
                ACCESS  read-only
                STATUS  mandatory
                DESCRIPTION
                        "This is the number of active ICMP connections using
                        the Network Address Translator application."
                ::= { ctNatConfigGroup 13}

        ctNatRetries       OBJECT-TYPE
                SYNTAX  Counter
                ACCESS  read-only
                STATUS  mandatory
                DESCRIPTION
                        "This is the number of detected TCP retries in both
                        directions since the last reset."
                ::= { ctNatConfigGroup 14}

        ctNatBadSums       OBJECT-TYPE
                SYNTAX  Counter
                ACCESS  read-only
                STATUS  mandatory
                DESCRIPTION
                        "This is the number of detected checksum errors in both
                        directions since the last reset."
                ::= { ctNatConfigGroup 15}

        ctNatTotalPkts       OBJECT-TYPE
                SYNTAX  Counter
                ACCESS  read-only
                STATUS  mandatory
                DESCRIPTION
                        "This is the total number of packets by the application
                        since the last reset."
                ::= { ctNatConfigGroup 16}

        ctNatBadPkts       OBJECT-TYPE
                SYNTAX  Counter
                ACCESS  read-only
                STATUS  mandatory
                DESCRIPTION
                        "This is the total number of packets detected with an 
                        invalid format since the last reset."
                ::= { ctNatConfigGroup 17}

        ctNatResPkts       OBJECT-TYPE
                SYNTAX  Counter
                ACCESS  read-only
                STATUS  mandatory
                DESCRIPTION
                        "This is the total number of packets detected with a
                        reserved address since the last reset."
                ::= { ctNatConfigGroup 18}

        ctNatTotTcpConn       OBJECT-TYPE
                SYNTAX  Counter
                ACCESS  read-only
                STATUS  mandatory
                DESCRIPTION
                        "This is the number of TCP connections made
                        using the Network Address Translator application
                        since the last reset."
                ::= { ctNatConfigGroup 19}

        ctNatTotUdpConn       OBJECT-TYPE
                SYNTAX  Counter
                ACCESS  read-only
                STATUS  mandatory
                DESCRIPTION
                        "This is the number of UDP connections made
                        using the Network Address Translator application
                        since the last reset."
                ::= { ctNatConfigGroup 20}

        ctNatTotIcmpConn       OBJECT-TYPE
                SYNTAX  Counter
                ACCESS  read-only
                STATUS  mandatory
                DESCRIPTION
                        "This is the number of ICMP connections made
                        using the Network Address Translator application
                        since the last reset."
                ::= { ctNatConfigGroup 21}

-- This table configures each instance of the Network Address Translator class.

        ctNatConfigTable OBJECT-TYPE
                SYNTAX      SEQUENCE OF CtNatConfigEntry
                ACCESS      not-accessible
                STATUS      mandatory
                DESCRIPTION
                        "Information describing the configuration parameters
                        for each instance of NAT."
                ::= { ctNatConfigGroup 22 }
        
        ctNatConfigEntry OBJECT-TYPE
                SYNTAX      CtNatConfigEntry
                ACCESS      not-accessible
                STATUS      mandatory
                DESCRIPTION
                        "A description of a single server entry."
                INDEX       { ctNatConfigId }
                ::= { ctNatConfigTable 1 }
        
        CtNatConfigEntry ::=
                SEQUENCE {
                        ctNatConfigId
                        INTEGER,
                        ctNatAdminStatus
                        INTEGER,
                        ctNatOperStatus
                        INTEGER,
                        ctNatLocalIfIndex
                        INTEGER,
                        ctNatLocalIP
                        IpAddress,
                        ctNatLocalMask
                        IpAddress
                        }
        
        ctNatConfigId    OBJECT-TYPE
                SYNTAX      INTEGER
                ACCESS      read-only
                STATUS      mandatory
                DESCRIPTION
                        "A unique value identifying an element in a sequence of
                        groups which belong to the NAT configuration table."
                ::= { ctNatConfigEntry 1 }
        
        ctNatAdminStatus        OBJECT-TYPE
                SYNTAX  INTEGER {
                        disabled(1),
                        enabled(2)
                        }
                ACCESS  read-write
                STATUS  mandatory
                DESCRIPTION
                        "Used to enable and disable the Network Address 
                        Translator method for this instance.  This object must 
                        be set to enabled for the translation to occur on 
                        ctNatLocalIfIndex."
                ::= { ctNatConfigEntry 2 }

        ctNatOperStatus OBJECT-TYPE
                SYNTAX  INTEGER {
                        disabled(1),
                        enabled(2),
                        invalid-config(3)
                        }
                ACCESS  read-only
                STATUS  mandatory
                DESCRIPTION
                        "Indicates the current operating status of the Network 
                        Address Translator feature."
                ::= { ctNatConfigEntry 3 }

        ctNatLocalIfIndex       OBJECT-TYPE
                SYNTAX  INTEGER
                ACCESS  read-write
                STATUS  mandatory
                DESCRIPTION
                        "This is the value of the MIB II ifindex which identifies 
                        the router port connected to the private network."
                ::= { ctNatConfigEntry 4 }

        ctNatLocalIP    OBJECT-TYPE
                SYNTAX  IpAddress 
                ACCESS  read-only
                STATUS  mandatory
                DESCRIPTION
                        "This is the IP address of the interface which
                        serves as the gateway for the private network.
                        With ctNatLocalMask, it serves to define the subnet 
                        of the hosts on the network.  The preferred address 
                        is 192.168.254.254, part of the class C net reserved 
                        by RFC1597."
                ::= { ctNatConfigEntry 5 }

        ctNatLocalMask  OBJECT-TYPE
                SYNTAX  IpAddress 
                ACCESS  read-only
                STATUS  mandatory
                DESCRIPTION
                        "This is the subnet mask of the interface which
                        serves as the gateway for the private network.
                        With ctNatLocalIP, it serves to define the subnet 
                        of the hosts on the network.  The preferred mask is
                        255.255.255.0, part of the class C net reserved 
                        by RFC1597."
                ::= { ctNatConfigEntry 6 }

    --
 --========        ctNatServerGroup group       =============--
    --

-- This group comprises the Network Address Translator Server List Table

        ctNatTotServerEntries   OBJECT-TYPE
                SYNTAX      INTEGER
                ACCESS      read-only
                STATUS      mandatory
                DESCRIPTION
                        "This is the total number of server assignments."
                ::= { ctNatServerGroup 1 }

        ctNatServerListTable OBJECT-TYPE
                SYNTAX      SEQUENCE OF CtNatServerListEntry
                ACCESS      not-accessible
                STATUS      mandatory
                DESCRIPTION
                        "Information describing the configured parameters
                        which designate a local device as a server."
                ::= { ctNatServerGroup 2 }
        
        ctNatServerListEntry OBJECT-TYPE
                SYNTAX      CtNatServerListEntry
                ACCESS      not-accessible
                STATUS      mandatory
                DESCRIPTION
                        "A description of a single server entry."
                INDEX       { ctNatServerId }
                ::= { ctNatServerListTable 1 }
        
        CtNatServerListEntry ::=
                SEQUENCE {
                        ctNatServerId
                        INTEGER,
                        ctNatProxyServer
                        OCTET STRING
                        }
        
        ctNatServerId    OBJECT-TYPE
                SYNTAX      INTEGER 
                ACCESS      read-only
                STATUS      mandatory
                DESCRIPTION
                        "A unique value identifying an element in a sequence of
                        groups which belong to the NAT Server List.  This value
                        ranges from 1 to 16."
                ::= { ctNatServerListEntry 1 }
        
        ctNatProxyServer   OBJECT-TYPE
                SYNTAX      OCTET STRING
                ACCESS      read-write
                STATUS      mandatory
                DESCRIPTION
                        "A description of a proxy server assignment.  The format
                        is private IP address of the server, followed by the 
                        public port number, followed by the private port number, 
                        followed by the protocol to be handled by the server.  
                        The fields are delimited by commas.  Each record must be 
                        31 chars or less.  Protocol choices are TCP and UDP." 
                ::= { ctNatServerListEntry 2 }

    --
 --========        ctNatConnStatsGroup group       =============--
    --

-- This table contains the Network Address Translator Connection Statistics.

        ctNatTotActiveConn   OBJECT-TYPE
                SYNTAX      INTEGER
                ACCESS      read-only
                STATUS      mandatory
                DESCRIPTION
                        "This is the total number of active connections."
                ::= { ctNatConnStatsGroup 1 }

        ctNatConnStatsTable OBJECT-TYPE
                SYNTAX      SEQUENCE OF CtNatConnStatsEntry
                ACCESS      not-accessible
                STATUS      mandatory
                DESCRIPTION
                        "Information describing the configured parameters
                        which designate a local device as a server."
                ::= { ctNatConnStatsGroup 2 }
        
        ctNatConnStatsEntry OBJECT-TYPE
                SYNTAX      CtNatConnStatsEntry
                ACCESS      not-accessible
                STATUS      mandatory
                DESCRIPTION
                        "A description of a single server entry."
                INDEX       { ctNatConnStatsID }
                ::= { ctNatConnStatsTable 1 }
        
        CtNatConnStatsEntry ::=
                SEQUENCE {
                        ctNatConnStatsID
                        INTEGER,
                        ctNatConnStatsForeignIP
                        IpAddress,
                        ctNatConnStatsLocalIP
                        IpAddress,
                        ctNatConnStatsPublicPort
                        INTEGER,
                        ctNatConnStatsLocalPort
                        INTEGER,
                        ctNatConnStatsForeignPort
                        INTEGER,
                        ctNatConnStatsOutgoingPkts
                        Counter,
                        ctNatConnStatsOutgoingBytes
                        Counter,
                        ctNatConnStatsIncomingPkts
                        Counter,
                        ctNatConnStatsIncomingBytes
                        Counter,
                        ctNatConnStatsTimeSinceUse
                        INTEGER,
                        ctNatConnStatsProtocol
                        INTEGER,
                        ctNatConnStatsTCPSeq
                        INTEGER,
                        ctNatConnStatsTCPAck
                        INTEGER,
                        ctNatConnStatsTCPState
                        INTEGER,
                        ctNatConnStatsLocalRetrys
                        Counter,
                        ctNatConnStatsForeignRetrys
                        Counter,
                        ctNatConnStatsLocalChecksum
                        Counter,
                        ctNatConnStatsForeignChecksum
                        Counter
                        }
        
        ctNatConnStatsID    OBJECT-TYPE
                SYNTAX      INTEGER 
                ACCESS      read-only
                STATUS      mandatory
                DESCRIPTION
                        "A unique value identifying an element in a sequence of
                        active connections which belong to the NAT Connection
                        Statistics Group."  
                ::= { ctNatConnStatsEntry 1 }
        
        ctNatConnStatsForeignIP OBJECT-TYPE
                SYNTAX  IpAddress 
                ACCESS  read-only
                STATUS  mandatory
                DESCRIPTION
                        "This is the IP address of the foreign host during
                        this active connection."
                ::= { ctNatConnStatsEntry 2 }

        ctNatConnStatsLocalIP   OBJECT-TYPE
                SYNTAX  IpAddress 
                ACCESS  read-only
                STATUS  mandatory
                DESCRIPTION
                        "This is the IP address of the local host during
                        this active connection."
                ::= { ctNatConnStatsEntry 3 }

        ctNatConnStatsPublicPort       OBJECT-TYPE
                SYNTAX  INTEGER
                ACCESS  read-only
                STATUS  mandatory
                DESCRIPTION
                        "This is the port number addressed by an external 
                        device.  It is also substituted for the local port 
                        by NAT on outbound packets."
                ::= { ctNatConnStatsEntry 4 }

        ctNatConnStatsLocalPort       OBJECT-TYPE
                SYNTAX  INTEGER
                ACCESS  read-only
                STATUS  mandatory
                DESCRIPTION
                        "This is the local host's port for TCP or UDP
                        for this active connection."
                ::= { ctNatConnStatsEntry 5 }

        ctNatConnStatsForeignPort       OBJECT-TYPE
                SYNTAX  INTEGER
                ACCESS  read-only
                STATUS  mandatory
                DESCRIPTION
                        "This is the source port number used by the
                        foreign host for this active connection."
                ::= { ctNatConnStatsEntry 6 }

        ctNatConnStatsOutgoingPkts       OBJECT-TYPE
                SYNTAX  Counter
                ACCESS  read-only
                STATUS  mandatory
                DESCRIPTION
                        "This is the number of packets that have been sent 
                        from the local net to the public net by this 
                        active connection."
                ::= { ctNatConnStatsEntry 7 }

        ctNatConnStatsOutgoingBytes       OBJECT-TYPE
                SYNTAX  Counter
                ACCESS  read-only
                STATUS  mandatory
                DESCRIPTION
                        "This is the number of bytes that have been sent 
                        from the local net to the public net by this 
                        active connection."
                ::= { ctNatConnStatsEntry 8 }

        ctNatConnStatsIncomingPkts       OBJECT-TYPE
                SYNTAX  Counter
                ACCESS  read-only
                STATUS  mandatory
                DESCRIPTION
                        "This is the number of packets that have been sent from
                        the public net to the local net by this active connection."
                ::= { ctNatConnStatsEntry 9 }

        ctNatConnStatsIncomingBytes       OBJECT-TYPE
                SYNTAX  Counter
                ACCESS  read-only
                STATUS  mandatory
                DESCRIPTION
                        "This is the number of bytes that have been sent from
                        the public net to the local net by this active connection."
                ::= { ctNatConnStatsEntry 10 }

        ctNatConnStatsTimeSinceUse       OBJECT-TYPE
                SYNTAX  INTEGER
                ACCESS  read-only
                STATUS  mandatory
                DESCRIPTION
                        "This is the time in seconds since the last packet 
                        was sent or received on this active connection."
                ::= { ctNatConnStatsEntry 11 }

        ctNatConnStatsProtocol       OBJECT-TYPE
                SYNTAX  INTEGER
                ACCESS  read-only
                STATUS  mandatory
                DESCRIPTION
                        "This is the type of IP protocol used by this 
                        active connection.  Options are 1 = ICMP, 6 = TCP 
                        and 17 = UDP."
                ::= { ctNatConnStatsEntry 12 }

--      The folowing objects apply to TCP connections only.

        ctNatConnStatsTCPSeq       OBJECT-TYPE
                SYNTAX  INTEGER
                ACCESS  read-only
                STATUS  mandatory
                DESCRIPTION
                        "This is the last TCP sequence number of local host 
                        sent on this active connection."
                ::= { ctNatConnStatsEntry 13 }

        ctNatConnStatsTCPAck       OBJECT-TYPE
                SYNTAX  INTEGER
                ACCESS  read-only
                STATUS  mandatory
                DESCRIPTION
                        "This is the last TCP acknowledgement number of 
                        local host sent on this active connection."
                ::= { ctNatConnStatsEntry 14 }

        ctNatConnStatsTCPState       OBJECT-TYPE
                SYNTAX  INTEGER
                ACCESS  read-only
                STATUS  mandatory
                DESCRIPTION
                        "This is the TCP connection state value on this 
                        active connection."
                ::= { ctNatConnStatsEntry 15 }

        ctNatConnStatsLocalRetrys       OBJECT-TYPE
                SYNTAX  Counter
                ACCESS  read-only
                STATUS  mandatory
                DESCRIPTION
                        "This is the number of TCP retries by the local host 
                        on this active connection."
                ::= { ctNatConnStatsEntry 16 }

        ctNatConnStatsForeignRetrys       OBJECT-TYPE
                SYNTAX  Counter
                ACCESS  read-only
                STATUS  mandatory
                DESCRIPTION
                        "This is the number of TCP retries by the foreign host 
                        on this active connection."
                ::= { ctNatConnStatsEntry 17 }

        ctNatConnStatsLocalChecksum       OBJECT-TYPE
                SYNTAX  Counter
                ACCESS  read-only
                STATUS  mandatory
                DESCRIPTION
                        "This is the number of times checksum failed in a 
                        packet from the local host on this active connection."
                ::= { ctNatConnStatsEntry 18 }

        ctNatConnStatsForeignChecksum       OBJECT-TYPE
                SYNTAX  Counter
                ACCESS  read-only
                STATUS  mandatory
                DESCRIPTION
                        "This is the number of times checksum failed in a 
                        packet from the foreign host on this active connection."
                ::= { ctNatConnStatsEntry 19 }

END