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

No Comments
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

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Dec, 26, 2010
Angelo Schalley
Linux, Networking, security, vmware, Windows-Microsoft

FreeBSD

On a FreeBSD Unix system, as with other BSD Unix systems, you have a number of utilities with a base system install that can be used for listing open files, running processes, and network connections. The netstat utility is maintained as a part of the FreeBSD base system by the FreeBSD core developers, and offers exactly the sort of functionality you need to list open ports on your system.

Category Archives: security

The mystery revealed – ftp active vs passive

create CSR openssl – request certificate

list open / listening ports linux unix windows

FreeBSD

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