Several organizations maintain and publish free blocklists of IP addresses and URLs of systems and networks suspected in malicious activities on-line. Some of these lists have usage restrictions

Do you want to block visitors by country?
Select the countries you want to block, IP address version (IPv4 or IPv6), output format and press the "Download" button.

The output formats supported are Apache .htaccess, Linux iptables, CIDR, Netmask, Inverse Netmask, IIS web.config, Cisco ACL, PeerGuardian2, network-object, Cisco bit bucket, Juniper Junos and MicroTik. Please find the details below:

Niezamówiona informacja handlowa, czyli spam

14 lipca otrzymałem e-maila zachęcającego mnie do rozpoczęcia współpracy z agencją reklamową X. E-mail jakich setki. “Zapraszamy do współpracy“, “nasza oferta to“… (nie wklejam, bo co drugie słowo należałoby wyciąć). Generalnie spam mało mnie interesuje i w ogóle na niego nie reaguje

In order to block an IP on your Linux server you need to use iptables tools (administration tool for IPv4 packet filtering and NAT) and netfilter firewall. First you need to log into shell as root user. To block an IP address you need to type the iptables command as follows: