---
name: "west-chamber"
section: "8"
platform: "linux"
package: "west-chamber-common"
version: "20100405+svn20111107.r124-14.3"
release: "Debian 13 (Trixie)"
platforms: ["linux"]
url: "https://new.carta.tech/west-chamber"
---

# west-chamber(8)

xtables extensions for eluding network intrusion detection.

## Name

West-chamber — xtables extensions for eluding network intrusion detection.

## Targets

### CUI

The CUI target sends obfuscating packets upon incoming SYN to make the  connection invisible to third-party intrusion detection.

### UDPENCAP

Unconditionally and statelessly encapsulate transport layer packets in UDP packets and decapsulate UDP packets.

- **--decap** *protocol*

  Decapsulate to this protocol (number).

- **--sport** *port*

  Encapsulate with the source port (number).

- **--dport** *port*

  Encapsulate with the destination port (number).

### ZHANG

The ZHANG target sends obfuscating packets upon incoming SYN/ACK to make the  connection invisible to third-party intrusion detection.

## Matches

### gfw

The gfw match allows to match on gfw packet fingerprints.

## See also

[**xtables-addons**(8)](/xtables-addons/8.md), [**iptables**(8)](/iptables/8.md), [**ip6tables**(8)](/ip6tables/8.md)