---
name: "firewall6"
section: "8"
platform: "linux"
package: "thc-ipv6"
version: "3.8-4"
release: "Arch Linux 2026-11-01"
platforms: ["linux"]
url: "https://new.carta.tech/firewall6"
---

# firewall6(8)

## NAME

**firewall6**

## SYNOPSIS

firewall6 \[-Hu\] interface destination port \[test-case-no\]

Performs various ACL bypass attempts to check implementations. Defaults to TCP ports, option -u switches to UDP. Option -H prints the hop count. For all test cases to work, ICMPv6 ping to the destination must be allowed.

## AUTHOR

thc-ipv6 was written by van Hauser \<vh@thc.org\> / THC

The homepage for this toolkit is: https://github.com/vanhauser-thc/thc-ipv6

## COPYRIGHT

firewall6 3.8 (c) 2020 by van Hauser / THC \<vh@thc.org\> www.github.com/vanhauser-thc/thc-ipv6