| Commit message (Collapse) | Author | Age | Files | Lines |
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This enables to send icmp frag-needed messages using reject target.
I have a bridge with connects an gretap tunnel with some ethernet lan.
On the gretap device I use ignore-df to avoid packets being lost without
icmp reject to the sender of the bridged packet.
Still I want to avoid packet fragmentation with the gretap packets.
So I though about adding an nftables rule like this:
nft insert rule bridge filter FORWARD \
ip protocol tcp \
ip length > 1400 \
ip frag-off & 0x4000 != 0 \
reject with icmp type frag-needed
This would reject all tcp packets with ip dont-fragment bit set that are
bigger than some threshold (here 1400 bytes). The sender would then receive
ICMP unreachable - fragmentation needed and reduce its packet size (as
defined with PMTU).
[ pablo: update tests/py ]
Signed-off-by: Michael Braun <michael-dev@fami-braun.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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Signed-off-by: Jan Engelhardt <jengelh@inai.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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Signed-off-by: Ville Skyttä <ville.skytta@iki.fi>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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Double-spacing in .txt files has no effect on PDF or man page output and
can make it hard to locate phrases when editing, so remove them.
Signed-off-by: Duncan Roe <duncan_roe@optusnet.com.au>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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Correct all the typos done while converting man page source to asciidoc.
Signed-off-by: Arushi Singhal <arushisinghal19971997@gmail.com>
Signed-off-by: Florian Westphal <fw@strlen.de>
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- data-types.txt: "user space" -> userspace to match usage in statements.txt &
data-types.txt
- nft.txt: "an user-defined" sounds odd to a native English speaker (trust me)
so change to "a user-defined"
These patches are applied on top of Máté's previous 2, but apply fine
without them (2 occurrences of "offset -5 lines").
Signed-off-by: Duncan Roe <duncan_roe@optusnet.com.au>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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These were found by a combination of tkdiff and side-by-side man pages
Most changes preserve or (occasionally) fix highlighting, casing or plurality.
No major omissions were found.
- data-types.txt: (Nothing special)
- nft.txt:
-- changed "`nft' stands for Netfilter" back to "`nf' stands for Netfilter"
-- removed mysterious plus sign
- payload-expression.txt:
-- XML had MTU as 16-bit so changed back from 32. Is that correct?
- primary-expression.txt: (Nothing special)
- statements.txt: (Nothing special)
This patch does not address any of the following observations:
1. Title has changed from nft to NFT
2. There is no attempt at justification.
3. There is no attempt at hyphenation.
4. Long lines of code now wrap instead of indenting nicely.
See e.g. "tcp option" line under EXTENSION HEADER EXPRESSIONS
5. Tables have a lot of empty lines in them.
6. Occasionally there is severe wrapping,
e.g. under CHAINS see add/create/delete/&c. which wrap at about cc40.
Signed-off-by: Duncan Roe <duncan_roe@optusnet.com.au>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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This run-together header has been there since before the conversion to .txt.
Also the comment starting "without []" wrapped around in an 80cc xterm,
so split into 2 comment lines and fixed grammar (extrs "the").
Signed-off-by: Duncan Roe <duncan_roe@optusnet.com.au>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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Correct some typo mistakes done while converting man page source to
asciidoc.
Signed-off-by: Arushi Singhal <arushisinghal19971997@gmail.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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Signed-off-by: Máté Eckl <ecklm94@gmail.com>
Signed-off-by: Florian Westphal <fw@strlen.de>
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This patch converts nft.xml into asciidoc markup.
Signed-off-by: Arushi Singhal <arushisinghal19971997@gmail.com>
Signed-off-by: Florian Westphal <fw@strlen.de>
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