zblocklist(1) - zmap IP blocklist tool

1. zblocklist(1)
2. zblocklist
3. zblocklist(1)

## NAME

`zblocklist` - zmap IP blocklist tool

## SYNOPSIS

zblocklist [ -b <blocklist> ] [ -w <allowlist> ] [ OPTIONS... ]

## DESCRIPTION

ZBlacklist is a network tool for limiting and deduplicating a list of IP addresses using a blocklist or allowlist.

## OPTIONS

### BASIC OPTIONS

`-b`, `--blocklist-file=path`

  File of subnets to exclude, in CIDR notation, one-per line. It is recommended you use this to exclude RFC 1918 addresses, multicast, IANA reserved space, and other IANA special-purpose addresses. An example blocklist file blocklist.conf for this purpose.

`-w`, `--allowlist-file=name`

  File of subnets to include, in CIDR notation, one-per line. All other subnets will be excluded.

`-l`, `--log-file=name`

  File to log to.

`--disable-syslog`

  Disable logging messages to syslog.

`-v`, `--verbosity`

  Level of log detail (0-5, default=3)

`--no-duplicate-checking`

  Don't deduplicate input addresses. Default is false.

`--ignore-blocklist-errors`

  Ignore invalid, malformed, or unresolvable entries in the blocklist/allowlist. Default is false.

`--ignore-input-errors`

  Don't print invalid entries in the input. Default is false.

### ADDITIONAL OPTIONS

`-h`, `--help`

  Print help and exit

`-V`, `--version`

  Print version and exit

1. ZMap
2. February 2024
3. zblocklist(1)