netflow | NetFlow version 1 , 5 , 7 , 8 , 9 & 10 support for Go | TCP library

by tehmaze Go Version: Current License: MIT

X-Ray Key Features Code Snippets Community Discussions(10)Vulnerabilities Install Support

kandi X-RAY | netflow Summary

netflow is a Go library typically used in Networking, TCP applications. netflow has no bugs, it has no vulnerabilities, it has a Permissive License and it has low support. You can download it from GitHub.

NetFlow version 1, 5, 7, 8, 9 & 10 (IPFIX) support for Go.

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Quality

Security

License

Reuse

Support

netflow has a low active ecosystem.

It has 72 star(s) with 29 fork(s). There are 11 watchers for this library.

It had no major release in the last 6 months.

There are 1 open issues and 6 have been closed. On average issues are closed in 27 days. There are 2 open pull requests and 0 closed requests.

It has a neutral sentiment in the developer community.

The latest version of netflow is current.

Quality

netflow has 0 bugs and 0 code smells.

Security

netflow has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.

netflow code analysis shows 0 unresolved vulnerabilities.

There are 0 security hotspots that need review.

License

netflow is licensed under the MIT License. This license is Permissive.

Permissive licenses have the least restrictions, and you can use them in most projects.

Reuse

netflow releases are not available. You will need to build from source code and install.

It has 3609 lines of code, 191 functions and 46 files.

It has medium code complexity. Code complexity directly impacts maintainability of the code.

Top functions reviewed by kandi - BETA

kandi has reviewed netflow and discovered the below as its top functions. This is intended to give you an instant insight into netflow implemented functionality, and help decide if they suit your requirements.

Bytes converts a byte slice to a byte slice .
createIpfixRegistry creates ipfix registry
Main entry point
VariableLength reads variable length from r and returns a slice of bytes .
reducedSizeRead decodes int from bs .
Dump prints a packet
getIpfixRecords retrieves ipfix records from ipfix registry
redredSizeReadSigned returns the decoded size of bs .
reducedSizeReadUnsigned returns the unsigned size of bs .
Read reads a Message from r and returns a Message . If t is nil the session will be used .

Get all kandi verified functions for this library.

netflow Key Features

No Key Features are available at this moment for netflow.

netflow Examples and Code Snippets

No Code Snippets are available at this moment for netflow.

Community Discussions

Trending Discussions on netflow

How to implement sampling in ns3?

Impossible to stop Logstash

LogStash - Read field content from file

Storing ranged timeseries data in Postgres

Netflow TCP Flags hexidecimal characters not representative of UAPRSF

Creating new columns with Pandas df.apply

why I am getting error from the try condition?

How to add a field from a file in logstash filter

python scripts for router

Sum all except x columns in power query

QUESTION

How to implement sampling in ns3?

Asked 2021-Aug-04 at 00:47

I wonder how to implement sampling in ns3. What exactly I want to implement is to create a simple network of switches and hosts using p2p links. Then, setting a probability (lets say 0.1) for an specific switch and expecting that every packet passing the switch will be captured with probability that I defined earlier. (Pretty much like the sampling in sflow or netflow). I browsed nsnam.org, and the only tool I found regarding my question is Flow Monitor which I think is not helpful for my purpose.

...

ANSWER

Answered 2021-Aug-04 at 00:47

There isn't a direct way to implement the behavior you want, but there is a solution.

Set up a normal hook to get all packets going through one of the switches. Refer to the tutorial to learn how to use the tracing system.

Then, use a RandomVariable at the beginning of your function to determine whether you want ignore that packet or not. The RandomVariable will need to be in global scope or passed in as parameter to the function.

Source https://stackoverflow.com/questions/68538078

QUESTION

Impossible to stop Logstash

Asked 2021-May-11 at 03:58

I am using ELK stack with Netflow module. First of all, when I checked CPU usage Logstash was using a lot of resources and I decided to stop it. This moment Elasticsearch/Kibana/Logstash is stopped. I mean, I ran command sudo service elasticsearch/kibana/logstash stop. Basically, I think that something is wrong with logstash. When I am see log in htop I am getting something like this, I do not understand why.

When checking logstash service status, getting something like this.

Logstash is still running, and I am trying to figure out how to stop it. I think, I ran it in a wrong manner at the start, but why not possible to stop it forever?

...

ANSWER

Answered 2021-May-10 at 09:14

You have to be aware that Logstash will not stop unless it was able to end all pipelines and got rid of all the events in them.

Stopping usually means that it will stop the input, making it so that no new events will enter the pipelines, then depending on the config of persistent queues or not it will process what is in the queue or not. This can indeed take upto several minutes depending on the amount of events and how hard the processing exactly is.

Also keep in mind that when you have large bulk requests going to Elasticsearch itself it could mean that the messages are getting too large.

If it is really needed to stop the Logstash and there is really no need to keeping the events that are in the queue, you can always do a kill -9 on the pid.

Source https://stackoverflow.com/questions/67467612

QUESTION

LogStash - Read field content from file

Asked 2021-May-06 at 13:14

Im using cidr filter to check if an IP si public or private. The list of cidrs to check is now hardcoded in the filter but I need to read it from a file or using a meta-variable loaded at runtime.

...

ANSWER

Answered 2021-May-06 at 13:14

You can use the network_path setting instead of network:

Source https://stackoverflow.com/questions/67418860

QUESTION

Storing ranged timeseries data in Postgres

Asked 2021-Jan-31 at 13:40

I need to store netflow data in Postgresql. This is data about network traffic. Each record contains the following:

Connection start time
Connection end time
Total data transferred
Source/destination IPs/ASNs
(There is a bunch more, but that is enough for the purpose of this question).

My question is this: How can I store this data so I can efficiently calculate data transfer rates for the past X days/hours? For example, I may want to draw a chart of all traffic to Netflix's ASN over the last 7 days, with hourly resolution.

The difference between the connection start & end times could be milliseconds, or could be over an hour.

My first-pass at this would be to store the connection in a TSTZRANGE field with a GiST index. Then, to query the data for hourly traffic over the last 7 days:

Use a CTE to generate a sequence of hourly time buckets
Look for any TSTZRANGEs which overlap each bucket
Calculate the duration of the overlap
Calculate the data rate for the record in bytes per second
Do duration * bytes per second to get total data
Group it all on the bucket, summing the total data values

However, that sounds like a lot of heavy lifting. Can anyone think of a better option?

...

ANSWER

Answered 2021-Jan-26 at 00:42

A first draft:

Source https://stackoverflow.com/questions/65891024

QUESTION

Netflow TCP Flags hexidecimal characters not representative of UAPRSF

Asked 2020-Oct-17 at 22:49

I'm attempting to perform some statistical analysis of netflow data from a dataset that was provided to me, however I am getting a number of TCP Flags that do not represent the normal UAPRSF format.

The following hex values have also been included:

0x52
0x5a
0xc2
0xd3
0xd6
0xd7
0xda
0xdb
0xdf

I understand that the TCP flag is originally stored as HEX and then translated into the appropriate flags, but I don't understand where the additional values are coming from

...

ANSWER

Answered 2020-Oct-17 at 22:49

There are an additional 3 ECN Bits immediately prior to the 6 control bits used to describe the TCP Flags. (see http://www.networksorcery.com/enp/protocol/tcp.htm)

Following the explanation provided in the below link, you can translate the additional hexadecimal values into flags including the ECN bits: https://www.manitonetworks.com/flow-management/2016/10/16/decoding-tcp-flags

Source https://stackoverflow.com/questions/64408090

QUESTION

Creating new columns with Pandas df.apply

Asked 2020-Oct-08 at 10:24

I have a huge NetFlow database, (it contains a Timestamp, Source IP, Dest IP, Protocol, Source and Dest Port Num., Packets Exchanged, Bytes and more). I want to create custom attributes based on the current and previous rows.

I want to calculate new columns based on the source ip and timestamp of the current row. This what i want to do logically:

Get the source ip for the current row.
Get the Timestamp for the current row.
Based on the source IP, and Timestamp, I want to get all the Previous rows of the entire dataframe, that matches the source IP, and the communicaton happened in the last half an hour. This is very important.
For the rows(Flows, in my example), that matches the criteria (source ip and happened in the last half hour), I want to count the sum and mean of all the packets and all the bytes.

One row from the dataset

Snippets of relevant code:

...

ANSWER

Answered 2020-Oct-07 at 11:53

Documented inline

Source https://stackoverflow.com/questions/64242707

QUESTION

why I am getting error from the try condition?

Asked 2020-Sep-12 at 11:42

    string_features = []
    for j in main_labels2: 
        if df[j].dtype == "object":
            string_features.append(j)
    try:
        string_features.remove("Label")
    except:
        print("error!")

...

ANSWER

Answered 2020-Sep-12 at 07:31

To filter out Label, you can do something like:

Source https://stackoverflow.com/questions/63857902

QUESTION

How to add a field from a file in logstash filter

Asked 2020-Jul-31 at 11:59

I have a logstash pipeline with many filters, it ingests netflow data using the netflow module.

I would like to add one field to the output result. The name of the field being: "site"

Site is going to be a numeric value present in a file. How do I create the field from the file?

Eg:

...

ANSWER

Answered 2020-Jul-31 at 11:59

You can leverage an environment variable in the Logstash configuration. First, export the variable before running Docker/Logstash:

Source https://stackoverflow.com/questions/63190128

QUESTION

python scripts for router

Asked 2020-Jun-26 at 20:38

I am a beginner. I use paramiko to push configuration to devices. I use anaconda on a windows machine. How do I use database and proper formatting to take the output? Please suggest some learning on exception handling.

...

ANSWER

Answered 2020-Jun-26 at 20:38

Used mongodb, pymongo, paramiko, get_transport(). Was able to pick data from database. Was able to dry run . Having few hiccups on the exceptions. Anyhow, I am able complete current task.

Source https://stackoverflow.com/questions/62427267

QUESTION

Sum all except x columns in power query

Asked 2020-Jun-26 at 11:13

I have a source table which I pivot and then want to sum across all columns except 1 column, here TRADEDATE. The error occurs in the step #"Filled Down"# and a similar error in the next step.

...

ANSWER

Answered 2020-Jun-26 at 11:13

let
    Source = Excel.CurrentWorkbook(){[Name="tbl_equi_funds"]}[Content],
    #"Changed Type" = Table.TransformColumnTypes(Source,{{"TRADEDATE", type date}, {"ID", Int64.Type}, {"Name Equity", type text}, {"AccNetFlow", type number}}),
    #"Removed Columns1" = Table.RemoveColumns(#"Changed Type",{"ID", "Redemption", "Emission", "Netflow"}),
    #"Pivoted Column" = Table.Pivot(#"Removed Columns1", List.Distinct(#"Removed Columns1"[Name Equity]), "Name Equity", "AccNetFlow"),
    #"Changed Type1" = Table.TransformColumnTypes(#"Pivoted Column",{{"TRADEDATE", type date}}),
    #"Filled Down" = Table.FillDown(#"Changed Type1",
      Table.ColumnNames(#"Changed Type1")),
    #"Inserted Sum" = Table.AddColumn(#"Filled Down", "SUM", each List.Sum(
      Record.ToList(Record.RemoveFields(_, {"TRADEDATE"}))), type number)
in
    #"Inserted Sum"

Source https://stackoverflow.com/questions/62573684

Community Discussions, Code Snippets contain sources that include Stack Exchange Network

Vulnerabilities

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Install netflow

You can download it from GitHub.

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For any new features, suggestions and bugs create an issue on GitHub. If you have any questions check and ask questions on community page Stack Overflow .

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