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authorRobert Göhler <github@ghlr.de>2022-12-19 19:55:30 +0100
committerGitHub <noreply@github.com>2022-12-19 19:55:30 +0100
commit768dd2b4a3935a813f0086f03031af1f9ae29348 (patch)
treefe280f290eac25c440af695668e66ccfd27cd5f8
parent9ca78c3edc4a72616f4135140c6d624227e8d1b2 (diff)
parent6205398554d80d117838085f03a218466264862c (diff)
downloadvyos-documentation-768dd2b4a3935a813f0086f03031af1f9ae29348.tar.gz
vyos-documentation-768dd2b4a3935a813f0086f03031af1f9ae29348.zip
Merge pull request #859 from initramfs/equuleus-fix-tcp-mss
firewall: T4709: update documentation for TCP MSS clamping
-rw-r--r--docs/configuration/firewall/index.rst14
1 files changed, 10 insertions, 4 deletions
diff --git a/docs/configuration/firewall/index.rst b/docs/configuration/firewall/index.rst
index 8a90e7fa..c2e584a3 100644
--- a/docs/configuration/firewall/index.rst
+++ b/docs/configuration/firewall/index.rst
@@ -812,10 +812,13 @@ IPv4
.. cfgcmd:: set firewall options interface <interface> adjust-mss
- <number-of-bytes>
+ <mss | clamp-mss-to-pmtu>
Use this command to set the maximum segment size for IPv4 transit
- packets on a specific interface (500-1460 bytes).
+ packets on a specific interface (536-65535 bytes).
+
+ Instead of a numerical MSS value `clamp-mss-to-pmtu` can be used to
+ automatically set the proper value.
Example
-------
@@ -835,10 +838,13 @@ IPv6
====
.. cfgcmd:: set firewall options interface <interface> adjust-mss6
- <number-of-bytes>
+ <mss | clamp-mss-to-pmtu>
Use this command to set the maximum segment size for IPv6 transit
- packets on a specific interface (1280-1492 bytes).
+ packets on a specific interface (1220-65535 bytes).
+
+ Instead of a numerical MSS value `clamp-mss-to-pmtu` can be used to
+ automatically set the proper value.
.. _firewall:ipv6_example: