BSD Ports

net/tcpmssd 1.1_2 FreeBSD

Utility to correct requested TCP receive segment size

System
FreeBSD
Repository
FreeBSD ports
Maintainer
[email protected]
Categories
net
Package size
7.0 KiB, 11.2 KiB installed

Description

tcpmssd was written by Ruslan Ermilov <[email protected]> based on work done by Patrick Bihan-Faou <[email protected]>.

tcpmssd is a divert(4) program that adjusts outgoing TCP data so that the requested segment size is not greater than the amount allowed by the interface MTU.

This is necessary in many setups to avoid problems caused by routers that drop ICMP Datagram Too Big messages. Without these messages, the originating machine sends data, it passes the rogue router then hits a machine that has an MTU that is not big enough for the data. Because the IP Don't Fragment option is set, this machine sends an ICMP Datagram Too Big message back to the originator and drops the packet. The rogue router drops the ICMP message and the originator never gets to discover that it must reduce the fragment size or drop the IP Don't Fragment option from its outgoing data.

In the other systems

SystemPortVersion
FreeBSDnet/tcpmssd1.1_2
DragonFlynet/tcpmssd1.1_2
HardenedBSDnet/tcpmssd1.1_2
GhostBSDnet/tcpmssd1.1_2

Install

Binary package:

pkg install tcpmssd

From the ports tree:

cd /usr/ports/net/tcpmssd/ && make install clean

To depend on this port in another port's Makefile:

RUN_DEPENDS=	tcpmssd>0:net/tcpmssd

Packages

The version each package repository carries. “-” means the repository builds no package of it, “n/a” that there is no such repository.

Repositoryaarch64amd64armv6armv7i386
FreeBSD:14:latest1.1_21.1_21.1_11.1_21.1_2
FreeBSD:14:quarterly1.1_21.1_2n/a1.1_21.1_2
FreeBSD:15:latest1.1_21.1_2n/a1.1_21.1_2
FreeBSD:15:quarterly1.1_21.1_2n/an/an/a
FreeBSD:16:latest1.1_21.1_2n/an/an/a
FreeBSD:16:quarterlyn/an/an/an/an/a

Dependencies

The Makefile names none itself; they come from USES and USE_*.

The full lists below include those, and their dependencies in turn.

No port depends on this one.

Configuration

No options to configure.

Service scripts
none

Message after installing

===>   NOTICE:

The tcpmssd port currently does not have a maintainer. As a result, it is
more likely to have unresolved issues, not be up-to-date, or even be removed in
the future. To volunteer to maintain this port, please create an issue at:

https://bugs.freebsd.org/bugzilla

More information about port maintainership is available at:

https://docs.freebsd.org/en/articles/contributing/#ports-contributing

Files

No file lists for this port.

Commit history 0

No commits in the history this site was built from.