The mystery revealed – ftp active vs passive

Active ftp mode

Client starts connection with server on port TCP 21

Servers tells client to start listning on a port higher then TCP 1024

Server starts sending data traffic from TCP 20 to the TCP 1024 or higher port

Certificates and Encodings

At its core an X.509 certificate is a digital document that has been encoded and/or digitally signed according to RFC 5280.

In fact, the term X.509 certificate usually refers to the IETF’s PKIX Certificate and CRL Profile of the X.509 v3 certificate standard, as specified in RFC 5280, commonly referred to as PKIX for Public Key Infrastructure (X.509).

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Dec, 28, 2010
Angelo Schalley
Certificates, Linux, Plesk Linux, security

create CSR with the openssl-commando

1.Login as root. Go to a directory for storing the csr / ssl cert:
[root@serv]# cd /root/cert/

2.Create Private Key and CSR :
[root@serv cert]# openssl req -nodes -newkey rsa:2048 -keyout www_domain_com.key -out www_domain_com.csr

The mystery revealed – ftp active vs passive

The mystery revealed – ftp active vs passive

Openssl Certificates Tips & Tricks DER CRT CER PEM

Certificates and Encodings

create CSR openssl – request certificate

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