---
title: "tcp, tcp6, udp, udp6: OBSOLETE - Send messages to a remote log server using the legacy BSD-syslog protocol (tcp(), udp() drivers)"
url: "https://axoflow.com/docs/axosyslog-core/4.28/chapter-destinations/configuring-destinations-tcpudp/"
last_modified: "2023-10-29T10:05:55+01:00"
---

> For the complete documentation index, see [llms.txt](https://axoflow.com/docs/axosyslog-core/4.28/llms.txt).

# tcp, tcp6, udp, udp6: OBSOLETE - Send messages to a remote log server using the legacy BSD-syslog protocol (tcp(), udp() drivers)

> **Note:**
> The `tcp()`, `tcp6()`, `udp()`, and `udp6()` drivers are obsolete. Use the `network()` source and the `network()` destination instead. For details, see [network: Collect messages using the RFC3164 protocol (network() driver)](https://axoflow.com/docs/axosyslog-core/4.28/chapter-sources/configuring-sources-network/index.md) and [network: Send messages to a remote log server using the RFC3164 protocol (network() driver)](https://axoflow.com/docs/axosyslog-core/4.28/chapter-destinations/configuring-destinations-network/index.md), respectively.

To convert your existing `tcp()`, `tcp6()`, `udp()`, `udp6()` source drivers to use the `network()` driver, see [Change an old destination driver to the network() driver](https://axoflow.com/docs/axosyslog-core/4.28/chapter-destinations/configuring-destinations-tcpudp/reference-destination-tcpudp/destination-tcpudp-to-network/index.md).

The `tcp()`, `tcp6()`, `udp()`, and `udp6()` drivers send messages to another host (for example, an AxoSyslog server or relay) on the local intranet or internet using the UDP or TCP protocol. The `tcp6()` and `udp6()` drivers use the IPv6 network protocol.

---

[tcp(), tcp6(), udp(), and udp6() destination options](https://axoflow.com/docs/axosyslog-core/4.28/chapter-destinations/configuring-destinations-tcpudp/reference-destination-tcpudp/index.md)

Last modified October 29, 2023: [Create manpages (#34) (9534f54e)](https://github.com/axoflow/axosyslog-core-docs/commit/9534f54ee9e0cc76cb336c0c01f2e1973760d0e0)