piątek, 24 stycznia 2020

What is my IP? DNS way...

What is my IP via custom DNS server: 
dig @ip.socha.it tell-me-my-ip +short
Other use cases 
dig @ip.socha.it ip +short
dig @ip.nauka.ga ip +short
dig @ip.automatus.cf ip +short

dig @ip.socha.it ip TXT +short 
dig @ip.socha.it ip TXT +short +tcp
Autor: o Brak komentarzy:

What is my IP? The nginx way...

Pure nginx solution ;) 
curl -sf ip.socha.it
or 
curl -sf ip.socha.it/eol

Nginx configuration: 
server {
        listen 80;
        server_name ip.socha.it;
        default_type "text/plain";
        location /eol {
          return 200 "$remote_addr\n";
        }
        location / {
          return 200 $remote_addr;
        }
}
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niedziela, 19 stycznia 2020

Traefik v2 - private docker repository

It's time to migrate from Traefik v1 to Traefik v2.

Sample project based on docker-compose service definition: priavate docker registry.

Quick setup
curl -sf automatus.cf/private-registry | bash

Or step by step.

  • Install docker & docker-compose
  • Create required directories 
    mkdir registry
cd registry
mkdir {auth,default}
  • Create docker-compose.yml file: 
    version: '3'

services:
  gateway:
    image: traefik:2.1
    restart: always
    command: 
      - "--providers.docker"
      - "--providers.docker.exposedbydefault=false"
      - "--entrypoints.http.address=:80"
      - "--entrypoints.https.address=:443"
      - "--certificatesResolvers.le.acme.httpchallenge=true"
      - "--certificatesResolvers.le.acme.httpchallenge.entryPoint=http"
      - "--certificatesResolvers.le.acme.storage=/acme/acme.json"
     #- "--api.insecure=true"
     #- "--certificatesResolvers.le.acme.caServer=https://acme-staging-v02.api.letsencrypt.org/directory"
    ports:
      - 80:80
      - 443:443
      # API
      #- 8080:8080
    volumes:
      - /var/run/docker.sock:/var/run/docker.sock
      - acme:/acme
      - ./auth:/auth

  registry:
    restart: always
    image: registry:2
    environment:
      REGISTRY_HTTP_SECRET: change-me
    labels:
      - "traefik.enable=true"
      - "traefik.http.routers.http.rule=Host(`hostname-change-me`)" 
      - "traefik.http.routers.http.entrypoints=http"
      - "traefik.http.routers.https.rule=Host(`hostname-change-me`)" 
      - "traefik.http.routers.https.entrypoints=https"
      - "traefik.http.routers.https.tls=true"
      - "traefik.http.routers.https.tls.certresolver=le"
      - "traefik.http.middlewares.server-header.headers.customresponseheaders.server=docker-registry"
      - "traefik.http.middlewares.redirect.redirectscheme.scheme=https"
      - "traefik.http.middlewares.auth.basicauth.usersFile=/auth/passwd"
      - "traefik.http.middlewares.auth.basicauth.realm=REGISTRY"
      - "traefik.http.routers.http.middlewares=redirect,server-header"
      - "traefik.http.routers.https.middlewares=server-header,auth"
    volumes:
      - registry:/var/lib/registry

  # Catch-all default vhost
  default:
    image: nginx:stable
    restart: always
    labels:
      - "traefik.enable=true"
      - "traefik.http.routers.default.rule=HostRegexp(`{default:.*}`)" 
      - "traefik.http.routers.default.entrypoints=http"
      - "traefik.http.routers.default.priority=1"
      - "traefik.http.routers.default.middlewares=server-header"
    volumes:
      - ./default/default.conf:/etc/nginx/conf.d/default.conf

volumes:
  acme:
  registry:

# vim: set tabstop=2 shiftwidth=2 expandtab autoindent indentexpr= nosmartindent :
  • Create default/default.conf file: 
    server { 
   listen 80 default_server; 
   return 204;
}
  • Create user and passwrd for registry access: 
    htpasswd -c auth/passwd username >auth/passwd
#or
docker run --rm -it httpd:alpine htpasswd >auth/passwd
  • Start project 
    docker-compose up -d
    • Autor: o Brak komentarzy:

    piątek, 25 stycznia 2019

    PowerShell - podpisywanie skryptów (self-signed cert) 

      

# Genracja CA
# {hex}30030101FF => ASN.1 BasicConstraints: CA:TRUE
# $asn1=([System.Security.Cryptography.X509Certificates.X509BasicConstraintsExtension]::new($true, $flase, 0,$true)).RawData
# $asn1 | Format-Hex -Encoding Ascii

$ca_params =@{ 
   "Type"              = "Custom";
   "Subject"           = "CN=Local CA";
   "FriendlyName"      = "Local CA";
   "KeyAlgorithm"      = "RSA";
   "KeyLength"         = 2048;
   "KeyUsage"          = "CertSign";
   "TextExtension"     = @("2.5.29.19={critical}{hex}30030101FF");
   "NotAfter"          = ((Get-Date).AddYears(10)); 
   "CertStoreLocation" = "Cert:\CurrentUser\My";
}

$root=New-SelfSignedCertificate @ca_params 
$root.ToString()

$cert_params =@{ 
   "Signer"            = $root;
   "Type"              = "CodeSigningCert";
   "Subject"           = "CN=Robert Socha";
   "FriendlyName"      = "Robert Socha CS";
   "KeyAlgorithm"      = "RSA";
   "KeyLength"         = 2048;
   "KeyUsage"          = "DigitalSignature";
   "NotAfter"          = ((Get-Date).AddYears(10)); 
   "CertStoreLocation" = "Cert:\CurrentUser\My";
}

# Generacja certyfikatu do podpisywania kodu
$code=New-SelfSignedCertificate @cert_params
$code.ToString()

# Export certifkatu CA do zaufanych
$ca_file = [System.IO.Path]::GetTempFileName()
Export-Certificate -Type CERT -Cert $root -FilePath $ca_file -Force
Import-Certificate -CertStoreLocation Cert:\CurrentUser\Root -FilePath $ca_file

# Export certyfikatu podpisującego do zaufanych dostawców kodu
Export-Certificate -Type CERT -Cert $code -FilePath $ca_file -Force
Import-Certificate -CertStoreLocation Cert:\CurrentUser\TrustedPublisher -FilePath $ca_file
Remove-Item $ca_file

# $code=(Get-ChildItem cert:\CurrentUser\my -CodeSigningCert)[0]

# Skrypt do podpisania
'Write-Host "Hello, World!"' >.\sign_me.ps1

# https:/go.microsoft.com/fwlink/?LinkID=135170
Set-ExecutionPolicy -ExecutionPolicy AllSigned -Scope CurrentUser -Force

# Wartość domyślna dla wersji kliencikich Windows
# Set-ExecutionPolicy -ExecutionPolicy Undefined -Scope CurrentUser  -Force

Set-AuthenticodeSignature .\sign_me.ps1 $code

.\sign_me.ps1
    GIST
    Autor: o Brak komentarzy:

    Time-Stamp Protocol (RFC 3161) + openssl

    Serwery TSP:


      
# Plik z danymi:
echo "Hello, World!" >data.txt

# Tworzenie zapytania
openssl ts -query -data data.txt -no_nonce -sha512 -out data.tsq  
openssl ts -query -in data.tsq -text

        
Version: 1
Hash Algorithm: sha512
Message data:
    0000 - 92 16 18 bc 6d 9f 80 59-43 7c 5e 03 97 b1 3f 97   ....m..YC|^...?.
    0010 - 3a b7 c7 a7 b8 1f 0c a3-1b 70 bf 44 8f d8 00 a4   :........p.D....
    0020 - 60 b6 7e fd a0 02 00 88-bc 97 bf 7d 9d a9 7a 9e   `.~........}..z.
    0030 - 2c e7 b2 0d 46 e0 66 46-2e c4 4c f6 02 84 f9 a7   ,...F.fF..L.....
Policy OID: unspecified
Nonce: unspecified
Certificate required: no
Extensions:

      
# Zapytanie z żądaniem certyfikatu podpisującego
openssl ts -query -data data.txt -no_nonce -sha512 -cert -out data-cert.tsq
openssl ts -query -in data-cert.tsq -text

        
Version: 1
Hash Algorithm: sha512
Message data:
    0000 - 92 16 18 bc 6d 9f 80 59-43 7c 5e 03 97 b1 3f 97   ....m..YC|^...?.
    0010 - 3a b7 c7 a7 b8 1f 0c a3-1b 70 bf 44 8f d8 00 a4   :........p.D....
    0020 - 60 b6 7e fd a0 02 00 88-bc 97 bf 7d 9d a9 7a 9e   `.~........}..z.
    0030 - 2c e7 b2 0d 46 e0 66 46-2e c4 4c f6 02 84 f9 a7   ,...F.fF..L.....
Policy OID: unspecified
Nonce: unspecified
Certificate required: yes
Extensions:

      
# Wysyłanie zapytania do serwera 
curl -s -H "Content-Type: application/timestamp-query" \
     --data-binary @data.tsq  \
     http://time.certum.pl -o data.tsr
curl -s -H "Content-Type: application/timestamp-query" \
     --data-binary @data-cert.tsq  \
     http://time.certum.pl -o data-cert.tsr

# Lub wykorzystując tsget
# Może być konieczna instalacja bindingów curla dla perla: apt-get install libwww-curl-perl
/usr/lib/ssl/misc/tsget -h http://time.certum.pl/ -e .tsr -v data.tsr data-cert.tsq
 #> data.tsr: sending request, reply received, ./data.tsr written.
 #> data-cert.tsq: sending request, reply received, ./data-cert.tsr written.

# Informację na temat odpowiedzi
openssl ts -reply -in data.tsr -text
    Plik odpowiedzi. Dla pliku data-cert.tsr wygląda tak samo (różni się tylko rozmiar pliku) 
        
Status info:
Status: Granted.
Status description: unspecified
Failure info: unspecified

TST info:
Version: 1
Policy OID: 1.2.616.1.113527.2.5.1.11
Hash Algorithm: sha512
Message data:
    0000 - 92 16 18 bc 6d 9f 80 59-43 7c 5e 03 97 b1 3f 97   ....m..YC|^...?.
    0010 - 3a b7 c7 a7 b8 1f 0c a3-1b 70 bf 44 8f d8 00 a4   :........p.D....
    0020 - 60 b6 7e fd a0 02 00 88-bc 97 bf 7d 9d a9 7a 9e   `.~........}..z.
    0030 - 2c e7 b2 0d 46 e0 66 46-2e c4 4c f6 02 84 f9 a7   ,...F.fF..L.....
Serial number: 0x038D7EAE927662
Time stamp: Jan 25 00:17:48 2019 GMT
Accuracy: 0x01 seconds, unspecified millis, unspecified micros
Ordering: no
Nonce: unspecified
TSA: DirName:/C=PL/O=Unizeto Technologies S.A./OU=Certum Certification Authority/CN=Certum EV TSA SHA2
Extensions:
    Pobieramy certyfikaty CA i pośredni (wymagany dla pliku data.tsr) z tej strony: https://www.certum.pl/pl/wsparcie/cert_wiedza_zaswiadczenia_klucze_certum/ 
     
wget https://www.certum.pl/CTNCA.pem 
wget https://www.certum.pl/pl/upload_module/wysiwyg/zaswiadczenia/Certum_EV_TSA_SHA2/TSA-SHA2.pem

# Weryfikacja
# Odpowiedź z certyfikatem klucza podpisującego
openssl ts -verify -data data.txt -in data-cert.tsr -CAfile CTNCA.pem
# Odpowiedź bez certyfikatów
openssl ts -verify -data data.txt -in data.tsr -CAfile CTNCA.pem -untrusted TSA-SHA2.pem

    man openssl ts
    man openssl tsget
    Autor: o Brak komentarzy:

    wtorek, 19 kwietnia 2016

    CenOS 7 i bonding

    Setup: /etc/modules-load.d/bonding.conf:
    bonding
    /etc/modprobe.d/bonding.conf:
    options bonding max_bonds=0
    /etc/sysconfig/network-scripts/ifcfg-host0:
    NAME="host0"
DEVICE="host0"
NM_CONTROLLED=no
ONBOOT=yes
USERCTL=no
TYPE=Ethernet
BOOTPROTO=none
BONDING_OPTS="mode=802.3ad lacp_rate=slow miimon=250 xmit_hash_policy=layer2+3"
DEFROUTE=yes
IPV4_FAILURE_FATAL=no
IPV6INIT=no
IPADDR=192.168.1.1
PREFIX=31
GATEWAY=192.168.1.0
    /etc/sysconfig/network-scripts/ifcfg-eno1:
    NAME=eno1
DEVICE=eno1
TYPE=Ethernet
USERCTL=no
SLAVE=yes
MASTER=host0
BOOTPROTO=none
ONBOOT=yes
NM_CONTROLLED=no
    /etc/sysconfig/network-scripts/ifcfg-eno2:
    NAME=eno2
DEVICE=eno2
TYPE=Ethernet
USERCTL=no
SLAVE=yes
MASTER=host0
BOOTPROTO=none
ONBOOT=yes
NM_CONTROLLED=no
    Autor: o Brak komentarzy:

    sobota, 16 kwietnia 2016

    Debian i bonding

    Setup: 
    apt-get install vlan ifensalve
    /etc/modules:
    bonding
    /etc/modprobe.d/bonding.conf:
    options bonding max_bonds=0
    /etc/network/interfaces:
    auto host0
iface host0 inet static
        address 192.168.1.2
        netmask 255.255.255.248
        gateway 192.168.1.1
        bond-slaves eno1 eno2
        bond-mode 802.3ad
        bond-miimon 250
        bond-xmit-hash-policy layer2+3
    Autor: o Brak komentarzy:
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