Server Sandbox

Common commands

General

• netstat -a | more
  show ports and services that you are using.

• ifconfig
  Know network options.

DNS

• dig www.domain.com
  Do DNS query.

• host www.domain.com
  Know the IP of a name.

• nslookup www.domain.com
  Check if DNS is resolve correctly.

SMTP

• telnet xxx.xxx.xxx.xxx 25
  Basic query to SMTP service.

POP

• telnet xxx.xxx.xxx.xxx 110
  Basic query to POP service.

LDAP

• ldapsearch -x -H ldap://LDAP_IP -b "cn='',ou='',o='',c=''" FIELD
  Search in the LDAP IP.

HTTP

• curl -I www.domain.com
  Get HTTP head of the response.

SSL

• openssl version -d
  Report your SSL directory

• openssl req -x509 -newkey rsa:2048 -keyout cakey.pem -days 3650 -out cacert.pem Generate CA autosign in the server

• openssl x509 -in cacert.perm -text
  Check that your server certificate is standard by x509

• openssl rsa -in cakey.perm -text
  Check taht your server certificate is RSA correct

• openssl req -new -nodes -newkey rsa:1024 -keyout serverkey.pem -out servercsr.pem
  Generate certificate client

• openssl ca –keyfile cakey.pem -in servercsr.pem -out servercert.pem
  Sign certificate client by the server

• openssl s_server -cert servercert.pem -key serverkey.pem -www
  Check that your client certificate is valid