sipcalc - outra calculadora de subredes
Colaboração: Rubens Queiroz de Almeida
Data de Publicação: 15 de agosto de 2014
O aplicativo sipcalc é uma outra calculadora para ajudar na configuração de redes IP, tanto versão 4 quanto versão 6.
Em sua forma mais simples, o programa recebe como parâmetro um endereço IP e uma máscara de rede (netmask) e exibe as informações sobre a rede.
sipcalc 143.106.1.0/26 -[ipv4 : 143.106.1.0/26] - 0 [CIDR] Host address - 143.106.1.0 Host address (decimal) - 2406088960 Host address (hex) - 8F6A0100 Network address - 143.106.1.0 Network mask - 255.255.255.192 Network mask (bits) - 26 Network mask (hex) - FFFFFFC0 Broadcast address - 143.106.1.63 Cisco wildcard - 0.0.0.63 Addresses in network - 64 Network range - 143.106.1.0 - 143.106.1.63 Usable range - 143.106.1.1 - 143.106.1.62
No exemplo acima, o número de bits identificadores da rede (26) foi fornecido na linha de comando. Podemos também usar a notação completa, como abaixo:
sipcalc 192.168.0.1 255.255.128.0
Neste exemplo, o IP é 192.168.0.1 e a máscara de rede é 255.255.128.0.
Podemos também fornecer múltiplos parâmetros simultaneamente.
$ sipcalc 192.168.0.1 255.255.128.0 255.255.192.0
Neste exemplo, fornecemos a identificação de uma rede e duas máscaras de rede diferentes.
Outro recurso deste programa é a obtenção dos dados de configuração de uma interface de rede:
sipcalc eth0 -[int-ipv4 : eth0] - 0 [CIDR] Host address - 192.168.20.67 Host address (decimal) - 2406093891 Host address (hex) - 8F6A1443 Network address - 192.168.20.64 Network mask - 255.255.255.192 Network mask (bits) - 26 Network mask (hex) - FFFFFFC0 Broadcast address - 192.168.20.127 Cisco wildcard - 0.0.0.63 Addresses in network - 64 Network range - 192.168.20.64 - 192.168.20.127 Usable range - 192.168.20.65 - 192.168.20.126
E ainda, podemos obter informação sobre um determinado domínio:
sipcalc -d www.dicas-l.com.br -[ipv4 : www.dicas-l.com.br] - 0 [CIDR] Host address - 208.115.203.102 Host address (decimal) - 3497249638 Host address (hex) - D073CB66 Network address - 208.115.203.102 Network mask - 255.255.255.255 Network mask (bits) - 32 Network mask (hex) - FFFFFFFF Broadcast address - 208.115.203.102 Cisco wildcard - 0.0.0.0 Addresses in network - 1 Network range - 208.115.203.102 - 208.115.203.102
E também funciona para endereços ipv6:
sipcalc 2001:0db8:85a3:0000:0000:8a2e:0370:7334 -[ipv6 : 2001:0db8:85a3:0000:0000:8a2e:0370:7334] - 0 [IPV6 INFO] Expanded Address - 2001:0db8:85a3:0000:0000:8a2e:0370:7334 Compressed address - 2001:db8:85a3::8a2e:370:7334 Subnet prefix (masked) - 2001:db8:85a3:0:0:8a2e:370:7334/128 Address ID (masked) - 0:0:0:0:0:0:0:0/128 Prefix address - ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff Prefix length - 128 Address type - Aggregatable Global Unicast Addresses Network range - 2001:0db8:85a3:0000:0000:8a2e:0370:7334 - 2001:0db8:85a3:0000:0000:8a2e:0370:7334
Para instalar o aplicativo sipcalc em sistemas Debian GNU/Linux e derivados, digite:
sudo apt-get install sipcalc
Piadas IPv6
- The world is moving from IPv4 and going straight to IPv6 because Chuck Norris doesn't like the number 5!
- The bad thing about IPv6 jokes is that nobody wants to tell them first.
- The best part about IPv6 jokes is that you don't have to make up the punchline for 15 years.
- The great thing about Teredo jokes is that you can tell smart jokes even when surrounded by dumb peers.
- The problem with IPv6 jokes is they're long, obscure and no one gets them without a translation.
- I know a great IPv6 joke, but I just don't think you're ready for it.
- An IPv6 packet walks into a bar. Nobody talks to him.
- The great thing about Teredo jokes is that you can tell smart jokes even when surrounded by dumb peers.
- I will tell you IPv6 joke, but first I need to tell you IPv4 joke, so you get it.
- If you run IPv6 then you're a c001:d00d.
- IPv4 is soon dead:beef.