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Live filtering of tables

Multiple measuring statistics show all entries in tables with different columns for all measured values, which can be sorted individually.

Since often there are a lot of entries, the Allegro Network Multimeter allows for filtering those tables to quickly find the relevant information.

All search text areas show a hint about for what kind of information the table can be filtered. Once entered, the table is updated immediately while still updating the measured values for the visible entries.

This live filtering allows for viewing live data only for the entries that are currently important for the investigation of a network problem.

It is always possible the enter a single word for filtering.

In this case the Allegro Network Multimeter will match any possible field for the given text.

For instance, in the IP statistics, the IP will be matched if a number representation is entered, with an optional subnet mask length (1.2.3.4/8).

The known alternative names are also matched, so it is possible to enter a host name and the list will show only those entries which contain the string in the DHCP name, DNS name, HTTP name, or any other name field.

Some tables allow for using more complex expressions for flexible live filtering.

The support of filter expressions is indicated by the hint text in the search area, which informs that the entered string must start with an open parenthesis (.

In this mode it is possible to enter expressions in the form of keyword == value.

The keyword depends on the actual context of the search field, often name, ip, or packets is possible.

The web interface will give hints about all possible keywords in the current context which usually directly correlate with the available columns.

Also, the comparison operator can be == or != for equal or unequal compare, but for numbers <, >=, etc can be used too.

Multiple expressions can be combined with boolean operators and or or (or equivalent && / ||). Also, parentheses can be used to enter even more complex expressions.

  1. Show all IPs with at least 100 packets, that have been active within the last minute: (packets > 100 and lasttime < 60)
  2. Show all IPs that showed up not more than 24 hours ago and have an associated name of alice or bob: ( (firsttime < 86400 and ( name == alice or name == bob )) 86400 is the number of seconds in 24 hours (24 * 60 * 60)
  • It is possible to enter values in quotes if they contain reserved characters used for the expressions (<,=,&,(, etc).
  • Under the search text area, the interface will show all valid values for the last element entered in the expression.
  • A green check mark indicates if the entered expression has been successfully parsed.

The available keywords vary depending on the web interface section.

The web interface will always show the available keywords in the specific context. The following table contains all keywords:

KeywordDescription
nameany name information (DNS, DHCP, SSL, HTTP, custom names, etc)
name.dnsDNS name information only for IPs and IP connections
categorythe category of a custom name
ipthe IP address of the client or server side
ipgroupthe name(s) of the matching IP groups if configured
clientipthe IP address of the client
serveripthe IP address of the server
packetsthe number of packets (received and transmitted combined)
rxpacketsthe number of received packets
txpacketsthe number of transmitted packets
clientpacketsthe number of packets sent by the client
serverpacketsthe number of packets sent by the server
bytesthe number of bytes (received and transmitted combined)
rxbytesthe number of received bytes
txbytesthe number of transmitted bytes
clientbytesthe number of bytes sent by the client
serverbytesthe number of bytes sent by the server
ppsthe packets per second value
rxppsthe received packets per second value
txppsthe transmitted packets per second value
bpsthe bits per second value
rxbpsthe received bits per second value
txbpsthe transmitted bits per second value
firsttimethe time of the first activity
lasttimethe time of the last activity
tcppacketsthe number of TCP packets (received and transmitted combined)
udppacketsthe number of UDP packets (received and transmitted combined)
tcppayloadthe amount of bytes processed as TCP payload
tcpRetransthe amount of payload bytes retransmitted
tcpRetransRxthe amount of received payload bytes retransmitted
tcpRetransTxthe amount of transmitted payload bytes retransmitted
tcpRetransClientthe amount of client payload bytes retransmitted
tcpRetransServerthe amount of server payload bytes retransmitted
macthe MAC address of the client or server
portthe layer 4 port of the client or server (a number or range)
clientportthe layer 4 port of the client (a number or range)
serverportthe layer 4 port of the server (a number or range)
l4protocolthe layer 4 protocol name (tcp, udp, icmp, etc)
l7protocolthe layer 7 protocol name (http, dns, etc)
tcpendthe ending reason of a TCP connection (open, fin, rst, timeout)
tcpstatethe state of a TCP connection (valid, invalid, unknown)
tcpclienthandshakethe TCP handshake time in milliseconds for the client (time to answer the server’s syn packet)
tcpserverhandshakethe TCP handshake time in milliseconds for the server (time to answer the client’s syn packet)
tcpdataresponseavgthe average TCP data response time in milliseconds of the connection
tcpdataresponsemaxthe max TCP data response time in milliseconds of the connection (any direction)
httpresponsethe HTTP response time for a request
httpstatusthe HTTP status code of the response
sslhandshakethe SSL handshake time (time for the server to answer the SSL setup)
packetratiothe client/server packet ratio as a floating point number
vlanthe VLAN tag (a tag or ‘none’), both outer and inner VLAN will be considered
outervlanthe outer VLAN tag (a tag or ‘none’)
innervlanthe inner VLAN tag (a tag or ‘none’)
interface.namethe interface name or ID (starting at 1)
interface.rawidthe raw interface ID (starting at 0)
validconnectionsthe number of valid TCP connections
invalidconnectionsthe number of invalid TCP connections
profinetFrameIdthe number of a Profinet frame ID
minCallerJitterthe minimum jitter of the caller as a floating point number
avgCallerJitterthe average jitter of the caller as a floating point number
maxCallerJitterthe maximum jitter of the caller as a floating point number
minCalleeJitterthe minimum jitter of the callee as a floating point number
avgCalleeJitterthe average jitter of the callee as a floating point number
maxCalleeJitterthe maximum jitter of the callee as a floating point number
minJitterthe minimum jitter of the caller or callee as a floating point number
avgJitterthe average jitter of the caller or callee as a floating point number
maxJitterthe maximum jitter of the caller or callee as a floating point number
minCallerMosthe minimum MOS of the caller as a floating point number
avgCallerMosthe average MOS of the caller as a floating point number
maxCallerMosthe maximum MOS of the caller as a floating point number
minCalleeMosthe minimum MOS of the callee as a floating point number
avgCalleeMosthe average MOS of the callee as a floating point number
maxCalleeMosthe maximum MOS of the callee as a floating point number
minMosthe minimum MOS of the caller or callee as a floating point number
avgMosthe average MOS of the caller or callee as a floating point number
maxMosthe maximum MOS of the caller or callee as a floating point number
minClientJitterthe minimum jitter of the client as a floating point number
maxClientJitterthe maximum jitter of the client as a floating point number
avgClientJitterthe average jitter of the client as a floating point number
minServerJitterthe minimum jitter of the server as a floating point number
maxServerJitterthe maximum jitter of the server as a floating point number
avgServerJitterthe average jitter of the server as a floating point number
statusCodethe number of a status code
mplsthe MPLS label (a label or ‘none’), both outer and inner MPLS label will be considered
outermplsthe outer MPLS label (a label or ‘none’)
innermplsthe inner MPLS label (a label or ‘none’)
qosFilter for presence or absence of QoS. May be ‘any’ or ‘none’.
qosIpDscpthe DSCP value in the IP header
qosMplsTcthe traffic class value in the outermost MPLS label stack entry
qosVlanPcpthe priority code point in the outermost VLAN tag
usedCipherSuitethe negotiated SSL/TLS cipher suite name
usedTlsVersionthe negotiated SSL/TLS version
pppoeSessionIdthe PPPoE session ID (in hexadecimal or decimal representation)
mtuthe MTU value in bytes
rxMtuthe MTU value of the RX direction in bytes
txMtuthe MTU value of the TX direction in bytes
clientMtuthe MTU value of the sent direction of the client in bytes
serverMtuthe MTU value of the sent direction of the server in bytes
callIdthe string value of a SIP call ID or similar identifier (e.g. P-Palladion-ID)
dnsresponsethe DNS response time (for DNS connections)
dnsstatusmatches DNS response status (either a DNS reply code, e.g, 0 for success, or noanswer for unanswered DNS connections
dnsnamethe requested DNS name
callerRtpPacketLossthe amount of lost packets of the RTP flow of the caller
calleeRtpPacketLossthe amount of lost packets of the RTP flow of the callee
rtpPacketLossthe amount of lost packets of the RTP flow of the caller or callee
clientRtpPacketLossthe amount of lost packets of the RTP flow of the client
serverRtpPacketLossthe amount of lost packets of the RTP flow of the server
callerRtcpPacketLossthe amount of lost packets of the RTCP flow of the caller (firmware >= 4.5)
calleeRtcpPacketLossthe amount of lost packets of the RTCP flow of the callee (firmware >= 4.5)
rtcpPacketLossthe amount of lost packets of the RTCP flow of the caller or callee (firmware >= 4.5)
callerRtpJitterBufferExceededthe amount of packets with jitter above configured max jitter buffer threshold (default 50ms) of the RTP flow of the caller
calleeRtpJitterBufferExceededthe amount of packets with jitter above configured max jitter buffer threshold (default 50ms) of the RTP flow of the callee
rtpJitterBufferExceededthe amount of packets with jitter above configured max jitter buffer threshold (default 50ms) of the RTP flow of the caller or callee
clientRtpJitterBufferExceededthe amount of packets with jitter above configured max jitter buffer threshold (default 50ms) of the RTP flow of the client
serverRtpJitterBufferExceededthe amount of packets with jitter above configured max jitter buffer threshold (default 50ms) of the RTP flow of the server
callerRtpPayloadTypethe payload type of the RTP flow of the caller as a string, will match also parts of the name e.g. G.711
calleeRtpPayloadTypethe payload type of the RTP flow of the callee as a string, will match also parts of the name e.g. G.711
rtpPayloadTypethe payload type of the RTP flow of the caller or callee as a string, will match also parts of the name e.g. G.711
duration, sipDurationthe duration of a connection or a SIP call, amount of seconds
callerDurationthe duration of a SIP call of the caller, amount of seconds
calleeDurationthe duration of a SIP call of the callee, amount of seconds
diffRtpSipDurationthe difference between the duration of a SIP call and its RTP connection, amount of seconds
sipQosFilter for presence or absence of QoS in SIP calls. May be ‘any’ or ‘none’.
sipQosIpDscpthe DSCP value in the IP header of SIP packets
sipQosMplsTcthe traffic class value in the outermost MPLS label stack entry of SIP packets
sipQosVlanPcpthe priority code point in the outermost VLAN tag of SIP packets
rtpQosFilter for presence or absence of QoS in RTP streams. May be ‘any’ or ‘none’.
rtpQosIpDscpthe DSCP value in the IP header of RTP packets
rtpQosMplsTcthe traffic class value in the outermost MPLS label stack entry of RTP packets
rtpQosVlanPcpthe priority code point in the outermost VLAN tag of RTP packets
tcpZeroWindowthe number of TCP zero window packets
tcpZeroWindowRxthe number of TCP zero window packets in RX direction
tcpZeroWindowTxthe number of TCP zero window packets in TX direction
tcpZeroWindowClientthe number of TCP zero window packets of the client
tcpZeroWindowServerthe number of TCP zero window packets of the server
tcpWindowSizethe value of the announced TCP window size in bytes
tcpWindowSizeClientthe value of the announced TCP window size of the client in bytes
tcpWindowSizeServerthe value of the announced TCP window size of the server in bytes
tcpSmallestWindowSizethe smallest announced TCP window in bytes
tcpSmallestWindowSizeClientthe smallest announced TCP window of the client in bytes
tcpSmallestWindowSizeServerthe smallest announced TCP window of the server in bytes
tcpWindowScalethe value of the announced TCP window scale
tcpWindowScaleClientthe value of the announced TCP window scale of the client
tcpWindowScaleServerthe value of the announced TCP window scale of the server
tcpUsedWindowSizethe value of the actual used TCP window in bytes
tcpUsedWindowSizeClientthe value of the actual used TCP window of the client in bytes
tcpUsedWindowSizeServerthe value of the actual used TCP window of the server in bytes
tcpSynthe number of TCP SYN packets
tcpSynClientthe number of TCP SYN packets of the client
tcpSynServerthe number of TCP SYN packets of the server
tcpSynRxthe number of received TCP SYN packets of an IP
tcpSynTxthe number of transmitted TCP SYN packets of an IP
tcpSynAckthe number of TCP SYN-ACK packets
tcpSynAckClientthe number of TCP SYN-ACK packets of the client
tcpSynAckServerthe number of TCP SYN-ACK packets of the server
tcpSynAckRxthe number of received TCP SYN-ACK packets of an IP
tcpSynAckTxthe number of transmitted TCP SYN-ACK packets of an IP
tcpRstthe number of TCP RST packets
tcpRstClientthe number of TCP RST packets of the client
tcpRstServerthe number of TCP RST packets of the server
tcpRstRxthe number of received TCP RST packets of an IP
tcpRstTxthe number of transmitted TCP RST packets of an IP
tcpFinthe number of TCP FIN packets
tcpFinClientthe number of TCP FIN packets of the client
tcpFinServerthe number of TCP FIN packets of the server
tcpFinRxthe number of received TCP FIN packets of an IP
tcpFinTxthe number of transmitted TCP FIN packets of an IP
tcpDupAckthe number of TCP DUP ACK packets
tcpDupAckClientthe number of TCP DUP ACK packets of the client
tcpDupAckServerthe number of TCP DUP ACK packets of the server
tcpDupAckRxthe number of received TCP DUP ACK packets of an IP
tcpDupAckTxthe number of transmitted TCP DUP ACK packets of an IP
tcpMissedDatathe estimated amount of TCP bytes to not see
tcpDataTransferTimethe data transfer time in milliseconds (TCP applications times)
tcpFirstDataResponseTimefirst data response time in milliseconds (TCP applications times)
tcpTotalRequestResponseTransferTimetotal request response transfer time in milliseconds (TCP applications times)
traceroutethe IP or host name of a traceroute network hop
tracerouteHostnamethe host name of a traceroute network hop
tracerouteIpthe IP of a traceroute network hop
tlsAlertthe description of TLS alert messages (see RFC8446 section 6 for a full list)
tlsAlertLevelthe TLS alert level (can be warning, fatal or unknown)
supportedTlsVersionthe announced TLS version
supportedCipherSuitethe announced SSL/TLS cipher suite name
spiIPSec SPI (security parameter index), a number in hexadecimal or decimal representation
numberThe phone number of the caller or callee of a SIP call. Extracted from ‘From’, ‘To’, ‘Contact’, ‘P-Asserted-Identity’, or ‘P-Preferred-Identity’ field or request URI. (firmware <= 4.4)
callNumberThe phone number of the caller or callee of a SIP call. Extracted from ‘From’, ‘To’, ‘Contact’, ‘P-Asserted-Identity’, or ‘P-Preferred-Identity’ field or request URI. (firmware >= 4.5)
callerNumberThe phone number of the caller of a SIP call. Extracted from ‘From’ field.
calleeNumberThe phone number of the callee of a SIP call. Extracted from ‘To’ field.
packetTimeDelta min/avg/maxThe RTP packet time delta in milliseconds (min, average or max). This is the delta of arrival time between two subsequent packets.
callerPacketTimeDelta min/avg/maxThe RTP packet time delta in milliseconds (min, average or max) of the caller. This is the delta of arrival time between two subsequent packets.
calleePacketTimeDelta min/avg/maxThe RTP packet time delta in milliseconds (min, average or max) of the callee. This is the delta of arrival time between two subsequent packets.
clientPacketTimeDelta min/avg/maxThe RTP packet time delta in milliseconds (min, average or max) of the client. This is the delta of arrival time between two subsequent packets.
serverPacketTimeDelta min/avg/maxThe RTP packet time delta in milliseconds (min, average or max) of the server. This is the delta of arrival time between two subsequent packets.
serverMaxPacketLossBurstThe longest RTP packet loss in a row of the server.
clientMaxPacketLossBurstThe longest RTP packet loss in a row of the client.
callerMaxPacketLossBurstThe longest RTP packet loss in a row of the caller.
calleeMaxPacketLossBurstThe longest RTP packet loss in a row of the callee.
maxPacketLossBurstThe longest RTP packet loss in a row of either client/server or caller/callee.
peerRoleThe peer role. Could be either client or server.
ssrcThe RTP synchronization source value of either client or server. It can also be used in hexadecimal notation.
clientSsrcThe RTP synchronization source value of the client. It can also be used in hexadecimal notation.
serverSsrcThe RTP synchronization source value of the server. It can also be used in hexadecimal notation.
callerSsrcThe RTP synchronization source value of the caller. It can also be used in hexadecimal notation.
calleeSsrcThe RTP synchronization source value of the callee. It can also be used in hexadecimal notation.
peersThe amount of peers of an IP address.
sipCallerIpThe IP address of the SIP caller, usually the sender of SIP Invite packet.
sipCalleeIpThe IP address of the SIP callee, usually the receiver of SIP Invite packet.
minTtlThe min value of TTL for IPv4 or hop limit for IPv6.
maxTtlThe max value of TTL for IPv4 or hop limit for IPv6.
avgTtlThe avg value of TTL for IPv4 or hop limit for IPv6.

There are some additional keywords to support some limited set of wireshark compatible filter expressions:

KeywordDescriptionAvailable in firmware version
ip.addrthe IPv4 address (either source or destination)3.4
ip.srcthe IPv4 source address3.4
ip.dstthe IPv4 destination address3.4
ipv6.addrthe IPv6 address (either source or destination)3.4
ipv6.srcthe IPv6 source address3.4
ipv6.dstthe IPv6 destination address3.4
tcp.portthe source or destination port of a TCP connection3.4
tcp.srcportthe source port of a TCP connection3.4
tcp.dstportthe destination port of a TCP connection3.4
udp.portthe source or destination port of a UDP connection3.4
udp.srcportthe source port of a UDP connection3.4
udp.dstportthe destination port of a UDP connection3.4
smb.shareNamethe Name of the smb share4.1
smb.connectionEncryptedif the connection between a client and a server is encrypted
(possible values are: “encrypted” and “unencrypted”
4.1
smb.negotiationStatethe negotiation state of a connection4.1
smb.successfulConnects / smb.failedConnectsnumber of successful/failed connects to a smb share4.1
smb.successfulDisconnects / smb.failedDisconnectsnumber of successful/failed disconnects to a smb share4.1
smb.dialectthe used dialects of a smb server4.1
smb.dialectReqthe dialects requested by a client4.1
smb.dialectUsedthe dialects used by a client4.1
smb.failedOpens / smb.successfulOpensthe number of successful/failed opens of a file by a client of a
file
4.1
smb.failedOpens / smb.successfulOpensthe number of successful/failed opens of a file by a client4.1
smb.failedCloses / smb.successfulClosesthe number of successful/failed closes of a file by a client4.1
smb.failedDeletes / smb.successfulDeletesthe number of successful/failed deletes of a file by a client4.1
smb.firstOpen / smb.lastOpentime since the first/last open4.1
smb.lastClosetime since the file got closed the last time4.1
smb.lastDeletetime since the file got deleted the last time4.1
smb.bytesWritten / smb.bytesReadthe number of bytes written to/read from the file4.1
icmp.pingLatencyMinthe ping latency (min) in ms for ICMP ping request/replies tuples of
one connection
4.2
icmp.pingLatencyAvgthe ping latency (average) in ms for ICMP ping request/replies
tuples of one connection
4.2
icmp.pingLatencyMaxthe ping latency (max) in ms for ICMP ping request/replies tuples of
one connection
4.2
icmp.requeststhe number of ICMP ping requests of one connection4.2
icmp.repliesthe number of ICMP ping replies of one connection4.2
ip.ttl.min / max / avgthe min / max / avg TTL value of an IPv44.2
ipv6.hlim.min / max / avgthe min / max / avg hop limit value of an IPv64.2
goose.packetsExpectedthe number of expected IEC 61850 GOOSE packets4.2
goose.packetsLostthe number of lost IEC 61850 GOOSE packets4.2
goose.packetsRepeatthe number of repeated IEC 61850 GOOSE packets4.2
sv.asduExpectedthe number of expected IEC 61850 Sampled Values ASDUs4.2
sv.asduLostthe number of lost IEC 61850 Sampled Values ASDUs4.2
sv.asduRepeatthe number of repeated IEC 61850 Sampled Values ASDUs4.2
tds.loginack.tdsversionthe used TDS version as negotiated during the login process4.3
tds.sqlqueryresponse.avg/min/maxthe average/min/max response time for TDS SQL queries in ms4.3
tds.sqlqueryrequeststhe number of TDS SQL queries4.3
tds.sqlqueryresponsesthe number of responses to TDS SQL queries4.3
radius.messages
radius.client.messages radius.server.messages
the number of (total/client/server) RADIUS messages4.4
radius.messages.access
radius.client.messages.access radius.server.messages.access
the number of (total/client/server) RADIUS Access messages4.4
radius.messages.access.accept
radius.client.messages.access.accept
radius.server.messages.access.accept
the number of (total/client/server) RADIUS Access Accept
messages
4.4
radius.messages.access.challenge
radius.client.messages.access.challenge
radius.server.messages.access.challenge
the number of (total/client/server) RADIUS Access Challenge
messages
4.4
radius.messages.access.reject
radius.client.messages.access.reject
radius.server.messages.access.reject
the number of (total/client/server) RADIUS Access Reject
messages
4.4
radius.messages.access.request
radius.client.messages.access.request
radius.server.messages.access.request
the number of (total/client/server) RADIUS Access Request
messages
4.4
radius.messages.accounting
radius.client.messages.accounting
radius.server.messages.accounting
the number of (total/client/server) RADIUS Accounting messages4.4
radius.messages.accounting.request
radius.client.messages.accounting.request
radius.server.messages.accounting.request
the number of (total/client/server) RADIUS Accounting Request
messages
4.4
radius.messages.accounting.response
radius.client.messages.accounting.response
radius.server.messages.accounting.response
the number of (total/client/server) RADIUS Accounting Response
messages
4.4
radius.messages.others
radius.client.messages.others radius.server.messages.others
the number of other (total/client/server) RADIUS messages4.4
radius.client.messages.expected
radius.server.messages.expected
the number of expected (client/server) RADIUS messages4.4
radius.client.messages.lost
radius.server.messages.lost
the number of lost (client/server) RADIUS messages4.4
radius.client.messages.reorder
radius.server.messages.reorder
the number of reordered (client/server) RADIUS messages4.4
radius.client.messages.repeat
radius.server.messages.repeat
the number of repeated (client/server) RADIUS messages4.4
radius.calledStationIdthe called station ID string sent by the RADIUS client4.4
radius.callingStationIdthe calling station ID string sent by the RADIUS client4.4
radius.nasSpecifierthe NAS Specifier/Identifier string sent by the RADIUS client4.4
radius.responsetime.avg/min/maxthe average/min/max duration between client requests and server
responses
4.4
bgp.sourceIpthe IPv4 / IPv6 address of the message BGP source router4.5
bgp.destinationIpthe IPv4 / IPv6 address of the message BGP destination router4.5
bgp.versionthe BGP version used by the BGP router4.5
bgp.lastAsthe last AS announced by the BGP router4.5
bgp.holdTimethe hold time announced by a BGP router4.5
bgp.identifierthe IPv4 identifier of the BGP router4.5
bgp.lastSubnetthe last subnet announced by the BGP router4.5
bgp.messagesall BGP messages send between a router pair4.5
bgp.messages.openall BGP OPEN messages send between a router pair4.5
bgp.messages.updateall BGP UPDATE messages send between a router pair4.5
bgp.messages.notificationall BGP NOTIFICATION messages send between a router pair4.5
bgp.messages.keepaliveall BGP KEEPALIVE messages send between a router pair4.5
bgp.messages.unknownall unknown BGP messages send between a router pair4.5
bgp.rxMessagesall BGP messages received by a router4.5
bgp.rxMessages.openall BGP OPEN messages received by a router4.5
bgp.rxMessages.updateall BGP UPDATE messages received by a router4.5
bgp.rxMessages.notificationall BGP NOTIFICATION messages received by a router4.5
bgp.rxMessages.keepaliveall BGP KEEPALIVE messages received by a router4.5
bgp.rxMessages.unknownall unknown BGP messages received by a router4.5
bgp.txMessagesall BGP messages transmitted by a router4.5
bgp.txMessages.openall BGP OPEN messages transmitted by a router4.5
bgp.txMessages.updateall BGP UPDATE messages transmitted by a router4.5
bgp.txMessages.notificationall BGP NOTIFICATION messages transmitted by a router4.5
bgp.txMessages.keepaliveall BGP KEEPALIVE messages transmitted by a router4.5
bgp.txMessages.unknownall unknown BGP messages transmitted by a router4.5

Wireshark uses a filter syntax that is not directly compatible to the filter syntax in the Allegro Network Multimeter as it is more strict regarding the expression and also supports many packet header related fields.

However, Wireshark conversion filters for IPV4, IPV6, TCP, and UDP can be used directly:

  • Example: The filter “(ip.addr eq 1.2.3.4 and ip.addr eq 2.3.4.5) and (tcp.port eq 80 and tcp.port eq 1234)” is a valid filter expression. The corresponding native expression is: “ip == 1.2.3.4 and ip == 2.3.4.5 and port == 80 and port == 1234 and l4protocol == TCP” (the last part about the l4protocol can be left out since most of the time there is only one connection matching the port portion).