Blog

• News
• Easy documentation with Docsy
• Second blog post
• Releases
• Another Great Release
• Ufw Deny Reorder

News

Easy documentation with Docsy

This is a typical blog post that includes images.

The front matter specifies the date of the blog post, its title, a short description that will be displayed on the blog landing page, and its author.

Including images

Here’s an image (featured-sunset-get.png) that includes a byline and a caption.

The front matter of this post specifies properties to be assigned to all image resources:

resources:
- src: "**.{png,jpg}"
  title: "Image #:counter"
  params:
    byline: "Photo: Riona MacNamara / CC-BY-CA"

To include the image in a page, specify its details like this:

The image will be rendered at the size and byline specified in the front matter.

Second blog post

Text can be bold, italic, or strikethrough. Links should be blue with no underlines (unless hovered over).

There should be whitespace between paragraphs. There should be whitespace between paragraphs. There should be whitespace between paragraphs. There should be whitespace between paragraphs.

There should be whitespace between paragraphs. There should be whitespace between paragraphs. There should be whitespace between paragraphs. There should be whitespace between paragraphs.

There should be no margin above this first sentence.

Blockquotes should be a lighter gray with a border along the left side in the secondary color.

There should be no margin below this final sentence.

First Header

This is a normal paragraph following a header. Bacon ipsum dolor sit amet t-bone doner shank drumstick, pork belly porchetta chuck sausage brisket ham hock rump pig. Chuck kielbasa leberkas, pork bresaola ham hock filet mignon cow shoulder short ribs biltong. Bacon ipsum dolor sit amet t-bone doner shank drumstick, pork belly porchetta chuck sausage brisket ham hock rump pig. Chuck kielbasa leberkas, pork bresaola ham hock filet mignon cow shoulder short ribs biltong. Bacon ipsum dolor sit amet t-bone doner shank drumstick, pork belly porchetta chuck sausage brisket ham hock rump pig. Chuck kielbasa leberkas, pork bresaola ham hock filet mignon cow shoulder short ribs biltong.

Bacon ipsum dolor sit amet t-bone doner shank drumstick, pork belly porchetta chuck sausage brisket ham hock rump pig. Chuck kielbasa leberkas, pork bresaola ham hock filet mignon cow shoulder short ribs biltong.

On big screens, paragraphs and headings should not take up the full container width, but we want tables, code blocks and similar to take the full width.

Lorem markdownum tuta hospes stabat; idem saxum facit quaterque repetito occumbere, oves novem gestit haerebat frena; qui. Respicit recurvam erat: pignora hinc reppulit nos aut, aptos, ipsa.

Meae optatos passa est Epiros utiliter Talibus niveis, hoc lata, edidit. Dixi ad aestum.

Header 2

This is a blockquote following a header. Bacon ipsum dolor sit amet t-bone doner shank drumstick, pork belly porchetta chuck sausage brisket ham hock rump pig. Chuck kielbasa leberkas, pork bresaola ham hock filet mignon cow shoulder short ribs biltong.

Header 3

This is a code block following a header.

Header 4

• This is an unordered list following a header.
• This is an unordered list following a header.
• This is an unordered list following a header.

Header 5

1. This is an ordered list following a header.
2. This is an ordered list following a header.
3. This is an ordered list following a header.

Header 6

There’s a horizontal rule above and below this.

Here is an unordered list:

• Salt-n-Pepa
• Bel Biv DeVoe
• Kid ‘N Play

And an ordered list:

1. Michael Jackson
2. Michael Bolton
3. Michael Bublé

And an unordered task list:

• Create a sample markdown document
• Add task lists to it
• Take a vacation

And a “mixed” task list:

• Steal underpants
• ?
• Profit!

And a nested list:

• Jackson 5
  • Michael
  • Tito
  • Jackie
  • Marlon
  • Jermaine
• TMNT
  • Leonardo
  • Michelangelo
  • Donatello
  • Raphael

Definition lists can be used with Markdown syntax. Definition terms are bold.

Name

Godzilla

Born

1952

Birthplace

Japan

Color

Green

Tables should have bold headings and alternating shaded rows.

If a table is too wide, it should scroll horizontally.

Code snippets like var foo = "bar"; can be shown inline.

Also, this should vertically align with this and this.

Code can also be shown in a block element.

foo := "bar";
bar := "foo";

Code can also use syntax highlighting.

func main() {
  input := `var foo = "bar";`

  lexer := lexers.Get("javascript")
  iterator, _ := lexer.Tokenise(nil, input)
  style := styles.Get("github")
  formatter := html.New(html.WithLineNumbers())

  var buff bytes.Buffer
  formatter.Format(&buff, style, iterator)

  fmt.Println(buff.String())
}

Long, single-line code blocks should not wrap. They should horizontally scroll if they are too long. This line should be long enough to demonstrate this.

Inline code inside table cells should still be distinguishable.

Small images should be shown at their actual size.

Large images should always scale down and fit in the content container.

Components

Alerts

Sizing

Add some sections here to see how the ToC looks like. Bacon ipsum dolor sit amet t-bone doner shank drumstick, pork belly porchetta chuck sausage brisket ham hock rump pig. Chuck kielbasa leberkas, pork bresaola ham hock filet mignon cow shoulder short ribs biltong.

Parameters available

Bacon ipsum dolor sit amet t-bone doner shank drumstick, pork belly porchetta chuck sausage brisket ham hock rump pig. Chuck kielbasa leberkas, pork bresaola ham hock filet mignon cow shoulder short ribs biltong.

Using pixels

Bacon ipsum dolor sit amet t-bone doner shank drumstick, pork belly porchetta chuck sausage brisket ham hock rump pig. Chuck kielbasa leberkas, pork bresaola ham hock filet mignon cow shoulder short ribs biltong.

Using rem

Bacon ipsum dolor sit amet t-bone doner shank drumstick, pork belly porchetta chuck sausage brisket ham hock rump pig. Chuck kielbasa leberkas, pork bresaola ham hock filet mignon cow shoulder short ribs biltong.

Memory

Bacon ipsum dolor sit amet t-bone doner shank drumstick, pork belly porchetta chuck sausage brisket ham hock rump pig. Chuck kielbasa leberkas, pork bresaola ham hock filet mignon cow shoulder short ribs biltong.

RAM to use

Bacon ipsum dolor sit amet t-bone doner shank drumstick, pork belly porchetta chuck sausage brisket ham hock rump pig. Chuck kielbasa leberkas, pork bresaola ham hock filet mignon cow shoulder short ribs biltong.

More is better

Bacon ipsum dolor sit amet t-bone doner shank drumstick, pork belly porchetta chuck sausage brisket ham hock rump pig. Chuck kielbasa leberkas, pork bresaola ham hock filet mignon cow shoulder short ribs biltong.

Used RAM

Bacon ipsum dolor sit amet t-bone doner shank drumstick, pork belly porchetta chuck sausage brisket ham hock rump pig. Chuck kielbasa leberkas, pork bresaola ham hock filet mignon cow shoulder short ribs biltong.

This is the final element on the page and there should be no margin below this.

Releases

Another Great Release

Text can be bold, italic, or strikethrough. Links should be blue with no underlines (unless hovered over).

There should be whitespace between paragraphs. There should be whitespace between paragraphs. There should be whitespace between paragraphs. There should be whitespace between paragraphs.

There should be whitespace between paragraphs. There should be whitespace between paragraphs. There should be whitespace between paragraphs. There should be whitespace between paragraphs.

There should be no margin above this first sentence.

Blockquotes should be a lighter gray with a border along the left side in the secondary color.

There should be no margin below this final sentence.

First Header

This is a normal paragraph following a header. Bacon ipsum dolor sit amet t-bone doner shank drumstick, pork belly porchetta chuck sausage brisket ham hock rump pig. Chuck kielbasa leberkas, pork bresaola ham hock filet mignon cow shoulder short ribs biltong. Bacon ipsum dolor sit amet t-bone doner shank drumstick, pork belly porchetta chuck sausage brisket ham hock rump pig. Chuck kielbasa leberkas, pork bresaola ham hock filet mignon cow shoulder short ribs biltong. Bacon ipsum dolor sit amet t-bone doner shank drumstick, pork belly porchetta chuck sausage brisket ham hock rump pig. Chuck kielbasa leberkas, pork bresaola ham hock filet mignon cow shoulder short ribs biltong.

Bacon ipsum dolor sit amet t-bone doner shank drumstick, pork belly porchetta chuck sausage brisket ham hock rump pig. Chuck kielbasa leberkas, pork bresaola ham hock filet mignon cow shoulder short ribs biltong.

On big screens, paragraphs and headings should not take up the full container width, but we want tables, code blocks and similar to take the full width.

Lorem markdownum tuta hospes stabat; idem saxum facit quaterque repetito occumbere, oves novem gestit haerebat frena; qui. Respicit recurvam erat: pignora hinc reppulit nos aut, aptos, ipsa.

Meae optatos passa est Epiros utiliter Talibus niveis, hoc lata, edidit. Dixi ad aestum.

Header 2

This is a blockquote following a header. Bacon ipsum dolor sit amet t-bone doner shank drumstick, pork belly porchetta chuck sausage brisket ham hock rump pig. Chuck kielbasa leberkas, pork bresaola ham hock filet mignon cow shoulder short ribs biltong.

Header 3

This is a code block following a header.

Header 4

• This is an unordered list following a header.
• This is an unordered list following a header.
• This is an unordered list following a header.

Header 5

1. This is an ordered list following a header.
2. This is an ordered list following a header.
3. This is an ordered list following a header.

Header 6

There’s a horizontal rule above and below this.

Here is an unordered list:

• Salt-n-Pepa
• Bel Biv DeVoe
• Kid ‘N Play

And an ordered list:

1. Michael Jackson
2. Michael Bolton
3. Michael Bublé

And an unordered task list:

• Create a sample markdown document
• Add task lists to it
• Take a vacation

And a “mixed” task list:

• Steal underpants
• ?
• Profit!

And a nested list:

• Jackson 5
  • Michael
  • Tito
  • Jackie
  • Marlon
  • Jermaine
• TMNT
  • Leonardo
  • Michelangelo
  • Donatello
  • Raphael

Definition lists can be used with Markdown syntax. Definition terms are bold.

Name

Godzilla

Born

1952

Birthplace

Japan

Color

Green

Tables should have bold headings and alternating shaded rows.

If a table is too wide, it should scroll horizontally.

Code snippets like var foo = "bar"; can be shown inline.

Also, this should vertically align with this and this.

Code can also be shown in a block element.

foo := "bar";
bar := "foo";

Code can also use syntax highlighting.

func main() {
  input := `var foo = "bar";`

  lexer := lexers.Get("javascript")
  iterator, _ := lexer.Tokenise(nil, input)
  style := styles.Get("github")
  formatter := html.New(html.WithLineNumbers())

  var buff bytes.Buffer
  formatter.Format(&buff, style, iterator)

  fmt.Println(buff.String())
}

Long, single-line code blocks should not wrap. They should horizontally scroll if they are too long. This line should be long enough to demonstrate this.

Inline code inside table cells should still be distinguishable.

Small images should be shown at their actual size.

Large images should always scale down and fit in the content container.

Components

Alerts

Sizing

Add some sections here to see how the ToC looks like. Bacon ipsum dolor sit amet t-bone doner shank drumstick, pork belly porchetta chuck sausage brisket ham hock rump pig. Chuck kielbasa leberkas, pork bresaola ham hock filet mignon cow shoulder short ribs biltong.

Parameters available

Bacon ipsum dolor sit amet t-bone doner shank drumstick, pork belly porchetta chuck sausage brisket ham hock rump pig. Chuck kielbasa leberkas, pork bresaola ham hock filet mignon cow shoulder short ribs biltong.

Using pixels

Bacon ipsum dolor sit amet t-bone doner shank drumstick, pork belly porchetta chuck sausage brisket ham hock rump pig. Chuck kielbasa leberkas, pork bresaola ham hock filet mignon cow shoulder short ribs biltong.

Using rem

Bacon ipsum dolor sit amet t-bone doner shank drumstick, pork belly porchetta chuck sausage brisket ham hock rump pig. Chuck kielbasa leberkas, pork bresaola ham hock filet mignon cow shoulder short ribs biltong.

Memory

Bacon ipsum dolor sit amet t-bone doner shank drumstick, pork belly porchetta chuck sausage brisket ham hock rump pig. Chuck kielbasa leberkas, pork bresaola ham hock filet mignon cow shoulder short ribs biltong.

RAM to use

Bacon ipsum dolor sit amet t-bone doner shank drumstick, pork belly porchetta chuck sausage brisket ham hock rump pig. Chuck kielbasa leberkas, pork bresaola ham hock filet mignon cow shoulder short ribs biltong.

More is better

Bacon ipsum dolor sit amet t-bone doner shank drumstick, pork belly porchetta chuck sausage brisket ham hock rump pig. Chuck kielbasa leberkas, pork bresaola ham hock filet mignon cow shoulder short ribs biltong.

Used RAM

Bacon ipsum dolor sit amet t-bone doner shank drumstick, pork belly porchetta chuck sausage brisket ham hock rump pig. Chuck kielbasa leberkas, pork bresaola ham hock filet mignon cow shoulder short ribs biltong.

This is the final element on the page and there should be no margin below this.

Ufw Deny Reorder

Preface

​ The server was down for a few days, and I didn’t notice any messages on my phone. I only saw them on the 21st.

Post the code

#!/usr/bin/env bash

# Use the 'ufw status' command to retrieve a list of rules.
rules=$(ufw status | grep "DENY" | grep -v "Anywhere (v6)" | awk '{print $1 " " $3}')

IFS=$'\n' read -r -d '' -a rule_array <<<"$rules"

for rule in "${rule_array[@]}"; do
    to=$(echo "$rule" | awk '{print $1}')
    from=$(echo "$rule" | awk '{print $2}')
    echo " ==================== $to From: $from ==================== "

    if [ "$to" != "Anywhere" ] && [ "$from" == "Anywhere" ]; then
        to_port=$(echo "$to" | awk -F'/' '{print $1}')
        to_proto=$(echo "$to" | awk -F'/' '{print $2}')
        proto_arg=""
        if [ -z "$to_proto" ]; then
            proto_arg=""
        else
            proto_arg="proto $to_proto"
        fi

        ufw delete deny to any port ${to_port} ${proto_arg}

        ufw insert 1 deny from 0.0.0.0/0 to any port ${to_port} ${proto_arg}
        ufw insert $(ufw status numbered | grep '(v6)' | awk '{print $1}' | grep -o '[0-9]*' | head -n 1) deny from ::/0 to any port ${to_port} ${proto_arg}

    elif
        [ "$to" == "Anywhere" ] && [ "$from" != "Anywhere" ]
    then
        ufw delete deny from ${from}
        if [[ "$from" =~ : ]]; then
            # shellcheck disable=SC2046
            ufw insert $(ufw status numbered | grep '(v6)' | awk '{print $1}' | grep -o '[0-9]*' | head -n 1) deny from ${from} to any port ${to}
        else
            ufw insert 1 deny from ${from}
        fi

    elif [ "$to" != "Anywhere" ] && [ "$from" != "Anywhere" ]; then
        to_port=$(echo "$to" | awk -F'/' '{print $1}')
        to_proto=$(echo "$to" | awk -F'/' '{print $2}')

        if [[ "$from" =~ : ]]; then
            rule_number=$(ufw status numbered | grep '(v6)' | awk '{print $1}'| grep -o '[0-9]*' | head -n 1)
        else
            rule_number=1
        fi

        proto_arg=""
        if [ -z "$to_proto" ]; then
            proto_arg=""
        else
            proto_arg="proto $to_proto"
        fi

        ufw delete deny from ${from} to any port ${to_port} ${proto_arg}
        ufw insert $rule_number deny from ${from} to any port ${to_port} ${proto_arg}
    fi
done
ufw reload

​ Result testing

​ Block some scans

## censys
ufw delete deny from  162.142.125.0/24
ufw delete deny from 167.94.138.0/24
ufw delete deny from 167.94.145.0/24
ufw delete deny from 167.94.146.0/24
ufw delete deny from  167.248.133.0/24
ufw delete deny from 2602:80d:1000:b0cc:e::/80
ufw delete deny from 2620:96:e000:b0cc:e::/80

ufw insert 1 deny from  162.142.125.0/24
ufw insert 1 deny from 167.94.138.0/24
ufw insert 1 deny from 167.94.145.0/24
ufw insert 1 deny from 167.94.146.0/24
ufw insert 1 deny from  167.248.133.0/24
ufw insert `ufw status numbered | grep '(v6)' | grep -o '[0-9]*' | head -n 1` deny from 2602:80d:1000:b0cc:e::/80
ufw insert `ufw status numbered | grep '(v6)' | grep -o '[0-9]*' | head -n 1` deny from 2620:96:e000:b0cc:e::/80

## driftnet.io

ufw delete deny from 87.236.176.0/24
ufw delete deny from 193.163.125.0/24
ufw delete deny from 68.183.53.77/24
ufw delete deny from 104.248.203.191/24
ufw delete deny from 104.248.204.195/24
ufw delete deny from 142.93.191.98/24
ufw delete deny from 157.245.216.203/24
ufw delete deny from 165.22.39.64/24
ufw delete deny from 167.99.209.184/24
ufw delete deny from 188.166.26.88/24
ufw delete deny from 206.189.7.178/24
ufw delete deny from 209.97.152.248/24
ufw delete deny from 2a06:4880::/32
ufw delete deny from 2604:a880:800:10::c4b:f000/124
ufw delete deny from 2604:a880:800:10::c51:a000/124
ufw delete deny from 2604:a880:800:10::c52:d000/124
ufw delete deny from 2604:a880:800:10::c55:5000/124
ufw delete deny from 2604:a880:800:10::c56:b000/124
ufw delete deny from 2a03:b0c0:2:d0::153e:a000/124
ufw delete deny from 2a03:b0c0:2:d0::1576:8000/124
ufw delete deny from 2a03:b0c0:2:d0::1577:7000/124
ufw delete deny from 2a03:b0c0:2:d0::1579:e000/124
ufw delete deny from 2a03:b0c0:2:d0::157c:a000/124


ufw insert 1 deny from 87.236.176.0/24
ufw insert 1 deny from 193.163.125.0/24
ufw insert 1 deny from 68.183.53.77/24
ufw insert 1 deny from 104.248.203.191/24
ufw insert 1 deny from 104.248.204.195/24
ufw insert 1 deny from 142.93.191.98/24
ufw insert 1 deny from 157.245.216.203/24
ufw insert 1 deny from 165.22.39.64/24
ufw insert 1 deny from 167.99.209.184/24
ufw insert 1 deny from 188.166.26.88/24
ufw insert 1 deny from 206.189.7.178/24
ufw insert 1 deny from 209.97.152.248/24

ufw insert `ufw status numbered | grep '(v6)' | grep -o '[0-9]*' | head -n 1` deny from 2a06:4880::/32
ufw insert `ufw status numbered | grep '(v6)' | grep -o '[0-9]*' | head -n 1` deny from 2604:a880:800:10::c4b:f000/124
ufw insert `ufw status numbered | grep '(v6)' | grep -o '[0-9]*' | head -n 1` deny from 2604:a880:800:10::c51:a000/124
ufw insert `ufw status numbered | grep '(v6)' | grep -o '[0-9]*' | head -n 1` deny from 2604:a880:800:10::c52:d000/124
ufw insert `ufw status numbered | grep '(v6)' | grep -o '[0-9]*' | head -n 1` deny from 2604:a880:800:10::c55:5000/124
ufw insert `ufw status numbered | grep '(v6)' | grep -o '[0-9]*' | head -n 1` deny from 2604:a880:800:10::c56:b000/124
ufw insert `ufw status numbered | grep '(v6)' | grep -o '[0-9]*' | head -n 1` deny from 2a03:b0c0:2:d0::153e:a000/124
ufw insert `ufw status numbered | grep '(v6)' | grep -o '[0-9]*' | head -n 1` deny from 2a03:b0c0:2:d0::1576:8000/124
ufw insert `ufw status numbered | grep '(v6)' | grep -o '[0-9]*' | head -n 1` deny from 2a03:b0c0:2:d0::1577:7000/124
ufw insert `ufw status numbered | grep '(v6)' | grep -o '[0-9]*' | head -n 1` deny from 2a03:b0c0:2:d0::1579:e000/124
ufw insert `ufw status numbered | grep '(v6)' | grep -o '[0-9]*' | head -n 1` deny from 2a03:b0c0:2:d0::157c:a000/124

The End