AysadKozanoglu

####SIBIT - systemintegration.berlin / Germany

get by known AWS ip the originAS for whole AWS network

whois 13.125.40.66 | grep "OriginAS"

you would get in the output originAS like

OriginAS: AS16509 #--> AWs ripe ORIGIN

AysadKozanoglu

#!/bin/bash
#####################################################
# Author: Aysad Kozanoglu
#
# OS: Debian / Ubuntu / all derivates of Debian 
#
# Usage: file_encrypter.sh enc|dec FILENAME (without Ending .plain or .enc)
# example: ./file_encrypter.sh enc FILENAME  
# create first NEW_FILENAME.plain with plain content
#####################################################

AysadKozanoglu

# Shorten home dir, cygwin drives, paths that are too long
# (just bourne; no perl, sed, or bashisms!)


HOST='\033[02;36m\]\h'; HOST=' '$HOST
TIME='\033[01;31m\]\t \033[01;32m\]'
LOCATION=' \033[01;34m\]`pwd | sed "s#\(/[^/]\{1,\}/[^/]\{1,\}/[^/]\{1,\}/\).*\(/[^/]\{1,\}/[^/]\{1,\}\)/\{0,1\}#\1_\2#g"`'
BRANCH=' \033[00;33m\]$(git_branch)\[\033[00m\]\n\$ '
PS1=$TIME$USER$HOST$LOCATION$BRANCH
PS2='\[\033[01;36m\]>'

AysadKozanoglu

```
telnet mail.MailserverDomain.com 25

#Trying 76.33.23.xxx...
#Connected to mail.MailserverDomain.com.
#Escape character is '^]'.
#220 mail.MailserverDomain.com ESMTP Postfix

helo GIVEANYEXISTINGDOMAIN.COM

AysadKozanoglu

# Redis configuration file example.
#
# Note that in order to read the configuration file, Redis must be
# started with the file path as first argument:
#
# ./redis-server /path/to/redis.conf

# Note on units: when memory size is needed, it is possible to specify
# it in the usual form of 1k 5GB 4M and so forth:
#

AysadKozanoglu

# compile nginx with openssl1.1.1 
# params: --with-openssl=/source/openssl-1.1.1g --with-stream --with-threads --with-file-aio --with-http_stub_status_module --with-cc-opt='-g -O2 -fstack-protector-strong -Wformat -Werror=format-security -D_FORTIFY_SOURCE=2' --with-ld-opt=-Wl,-z,relro --sbin-path=/usr/local/sbin --with-http_stub_status_module --with-http_ssl_module --user=www-data --group=www-data 

# generate diffie hellman 
openssl dhparam -out /etc/cert/dhparams.pem 4096

# add following params in vhost config
ssl_protocols       TLSv1.2;

ssl_ciphers "EECDH+ECDSA+AESGCM EECDH+aRSA+AESGCM EECDH+ECDSA+SHA384 EECDH+ECDSA+SHA256 EECDH+aRSA+SHA384 EECDH+aRSA+SHA256 EECDH+aRSA+RC4 EECDH EDH+aRSA HIGH !RC4 !aNULL !eNULL !LOW !3DES !MD5 !EXP !PSK !SRP !DSS";

AysadKozanoglu

    location / {
                    proxy_pass https://example.de;
                    proxy_http_version 1.1;
                    proxy_set_header Accept-Encoding "";
                    proxy_set_header Cache-Control no-cache;
                    proxy_set_header Upgrade $http_upgrade;
                    proxy_set_header Connection 'upgrade';
                    proxy_set_header X-Real-IP $remote_addr;
                    proxy_ssl_server_name on;
    }

AysadKozanoglu

BCC - Dynamic Tracing Tools for Linux Performance Monitoring, Networking and More

pyDash - A Web Based Linux Performance Monitoring Tool

Perf - A Performance Monitoring and Analysis Tool for Linux

Collectl - An Advanced All-in-One Performance Monitoring Tool for Linux

Netdata - A Real-Time Performance Monitoring Tool for Linux Systems

AysadKozanoglu

 #!/bin/sh



IPT="/sbin/iptables"


# Flush old rules, old custom tables
$IPT --flush
$IPT --delete-chain

AysadKozanoglu

# To enable rate limiting simply add the following line to the top-level of your config file:

# 1 request / second
limit_req_zone $binary_remote_addr zone=login:10m rate=1r/s;

# Then apply it to a location by adding a rate  limiting burst to your server block:

location /account/login/ {
    # apply rate limiting
    limit_req zone=login burst=5;