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linux/Documentation/networking
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Eric Dumazet 64db5933c7 icmp: increase net.ipv4.icmp_msgs_{per_sec,burst} 
These sysctls were added in 4cdf507d54 ("icmp: add a global rate
limitation") and their default values might be too small.

Some network tools send probes to closed UDP ports from many hosts
to estimate proportion of packet drops on a particular target.

This patch sets both sysctls to 10000.

Note the per-peer rate-limit (as described in RFC 4443 2.4 (f))
intent is still enforced.

This also increases security, see b38e7819ca
("icmp: randomize the global rate limiter") for reference.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Reviewed-by: Kuniyuki Iwashima <kuniyu@google.com>
Link: https://patch.msgid.link/20260223161742.929830-1-edumazet@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-02-24 17:50:12 -08:00
..
caif
tty: cumulate and document tty_struct::flow* members
2021-05-13 16:57:16 +02:00
device_drivers
Merge tag 'net-next-7.0' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next
2026-02-11 19:31:52 -08:00
devlink
net/mlx5: implement swp_l4_csum_mode via devlink params
2025-11-20 19:01:22 -08:00
diagnostic
Documentation: use a source-read extension for the index link boilerplate
2026-01-23 11:59:34 -07:00
dsa
Documentation: net: dsa: mention simple HSR offload helpers
2025-12-01 16:51:55 -08:00
mac80211_hwsim
docs: net: convert two README files to ReST format
2019-07-31 13:31:56 -06:00
net_cachelines
tcp: try to avoid safer when ACKs are thinned
2026-02-03 15:13:24 +01:00
pse-pd
net: pse-pd: Add support for PSE PIs
2024-04-18 18:27:33 -07:00
xfrm
net: Move XFRM documentation into its own subdirectory
2025-11-12 08:30:03 +01:00
6lowpan.rst
docs: networking: convert 6lowpan.txt to ReST
2020-02-28 14:52:36 +01:00
6pack.rst
net: 6pack: Demote "How to turn on 6pack support" section heading
2025-10-21 10:57:45 +02:00
af_xdp.rst
net: xsk: introduce XDP_MAX_TX_SKB_BUDGET setsockopt
2025-07-10 14:48:29 +02:00
alias.rst
docs: networking: Convert alias.txt to rst
2018-07-18 15:28:27 -07:00
arcnet-hardware.rst
Documentation: ARCnet: Update obsolete contact info
2025-10-31 18:08:08 -07:00
arcnet.rst
Documentation: ARCnet: Update obsolete contact info
2025-10-31 18:08:08 -07:00
atm.rst
docs: networking: convert atm.txt to ReST
2020-04-28 14:38:38 -07:00
ax25.rst
Documentation: networking: ax25: update the mailing list info.
2025-10-21 17:41:57 -07:00
bareudp.rst
docs: net: bareudp: fix spelling and grammar mistakes
2024-11-30 13:54:28 -08:00
batman-adv.rst
batman-adv: Use consistent name for mesh interface
2025-02-22 11:36:22 +01:00
bonding.rst
bonding: support aggregator selection based on port priority
2025-09-09 10:56:02 +02:00
bridge.rst
Documentation: update mailing list addresses
2024-02-21 13:44:21 -07:00
can_ucan_protocol.rst
Documentation: networking: correct spelling
2023-01-31 13:00:47 +01:00
can.rst
Merge tag 'linux-can-fixes-for-6.18-20251014' of git://git.kernel.org/pub/scm/linux/kernel/git/mkl/linux-can
2025-10-15 17:56:20 -07:00
cdc_mbim.rst
Fix spelling mistake
2024-11-28 12:08:32 +01:00
checksum-offloads.rst
docs: networking: convert netdev-features.txt to ReST
2020-04-30 12:56:36 -07:00
dctcp.rst
docs: networking: convert dctcp.txt to ReST
2020-04-28 14:38:39 -07:00
devmem.rst
net: add devmem TCP TX documentation
2025-05-13 11:12:48 +02:00
dns_resolver.rst
net: dns_resolver: Fix request-key cross-reference
2025-09-26 15:21:38 -07:00
driver.rst
net: docs: update the sample code in driver.rst
2023-04-13 13:30:21 +02:00
eql.rst
docs: networking: convert eql.txt to ReST
2020-04-28 14:39:46 -07:00
ethtool-netlink.rst
ethtool: netlink: add ETHTOOL_MSG_MSE_GET and wire up PHY MSE access
2025-11-03 18:32:27 -08:00
failover.rst
net: Introduce generic failover module
2018-05-28 22:59:54 -04:00
fib_trie.rst
docs: networking: convert fib_trie.txt to ReST
2020-04-28 14:39:46 -07:00
filter.rst
ARC: Add eBPF JIT support
2024-05-12 16:51:36 -07:00
gen_stats.rst
docs: networking: convert gen_stats.txt to ReST
2020-04-28 14:39:46 -07:00
generic_netlink.rst
Documentation: networking: Update generic_netlink_howto URL
2022-11-23 17:25:02 -08:00
generic-hdlc.rst
docs: networking: convert generic-hdlc.txt to ReST
2020-04-28 14:39:46 -07:00
gtp.rst
Documentation: networking: correct spelling
2023-01-31 13:00:47 +01:00
ieee802154.rst
Documentation: ieee802154: fix grammar
2024-10-28 21:14:27 +01:00
ila.rst
docs: networking: convert ila.txt to ReST
2020-04-28 14:39:47 -07:00
index.rst
Merge tag 'net-next-7.0' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next
2026-02-11 19:31:52 -08:00
ioam6-sysctl.rst
ipv6: ioam: Documentation for new IOAM sysctls
2021-07-21 08:14:33 -07:00
iou-zcrx.rst
io_uring/zcrx: document area chunking parameter
2026-01-14 02:13:37 +00:00
ip_dynaddr.rst
docs: networking: convert ip_dynaddr.txt to ReST
2020-04-28 14:39:47 -07:00
ip-sysctl.rst
icmp: increase net.ipv4.icmp_msgs_{per_sec,burst}
2026-02-24 17:50:12 -08:00
ipsec.rst
docs: networking: convert ipsec.txt to ReST
2020-04-28 14:39:47 -07:00
ipv6.rst
docs: networking: convert ipv6.txt to ReST
2020-04-28 14:40:18 -07:00
ipvlan.rst
Documentation: networking: correct spelling
2023-01-31 13:00:47 +01:00
ipvs-sysctl.rst
ipvs: run_estimation should control the kthread tasks
2022-12-10 22:44:43 +01:00
iso15765-2.rst
Documentation/networking: fix basic node example document ISO 15765-2
2025-02-08 11:28:11 +01:00
j1939.rst
can: j1939: Extend stack documentation with buffer size behavior
2025-02-19 11:10:53 +01:00
kapi.rst
net-shapers: implement NL get operation
2024-10-10 08:30:22 -07:00
kcm.rst
docs/kcm: Fix typo "BFP"
2025-03-24 12:20:42 -07:00
l2tp.rst
documentation/networking: update l2tp docs
2024-08-11 04:38:49 +01:00
lapb-module.rst
docs: networking: convert lapb-module.txt to ReST
2020-04-30 12:56:35 -07:00
mac80211-auth-assoc-deauth.txt
…
mac80211-injection.rst
doc: networking: wireless: fix wiki website url
2020-06-08 10:05:53 +02:00
mctp.rst
mctp: Add SIOCMCTP{ALLOC,DROP}TAG ioctls for tag control
2022-02-09 12:00:11 +00:00
mpls-sysctl.rst
docs: networking: convert mpls-sysctl.txt to ReST
2020-04-30 12:56:36 -07:00
mptcp-sysctl.rst
mptcp: make ADD_ADDR retransmission timeout adaptive
2025-09-09 18:57:45 -07:00
mptcp.rst
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
2025-09-11 17:40:13 -07:00
msg_zerocopy.rst
docs: net: description of MSG_ZEROCOPY for AF_VSOCK
2023-10-15 13:19:42 +01:00
multi-pf-netdev.rst
tools: ynl: move python code to separate sub-directory
2025-01-09 12:53:27 -08:00
multiqueue.rst
docs: networking: convert multiqueue.txt to ReST
2020-04-30 12:56:36 -07:00
napi.rst
net: Extend NAPI threaded polling to allow kthread based busy polling
2025-11-03 18:11:40 -08:00
net_dim.rst
dim: pass dim_sample to net_dim() by reference
2024-11-03 12:36:54 -08:00
net_failover.rst
Documentation: net: net_failover: Separate cloud-ifupdown-helper and reattach-vf.sh code blocks marker
2025-10-17 16:28:29 -07:00
netconsole.rst
Documentation: netconsole: Separate literal code blocks for full and short netcat command name versions
2025-10-31 16:54:22 -07:00
netdev-features.rst
net: enable driver support for netmem TX
2025-05-13 11:12:49 +02:00
netdevices.rst
Documentation: net: Fix typos in netdevices.rst
2026-01-25 13:03:43 -08:00
netfilter-sysctl.rst
docs: networking: convert netfilter-sysctl.txt to ReST
2020-04-30 12:56:36 -07:00
netif-msg.rst
docs: networking: convert netif-msg.txt to ReST
2020-04-30 12:56:36 -07:00
netmem.rst
net: enable driver support for netmem TX
2025-05-13 11:12:49 +02:00
nexthop-group-resilient.rst
Documentation: net: Document resilient next-hop groups
2021-03-29 13:51:38 -07:00
nf_conntrack-sysctl.rst
netfilter: conntrack: remove DCCP protocol support
2025-07-03 13:51:39 +02:00
nf_flowtable.rst
docs: nf_flowtable: fix compilation and warnings
2021-03-25 17:42:02 -07:00
nfc.rst
net: nfc: Format userspace interface subsection headings
2025-10-21 10:57:45 +02:00
oa-tc6-framework.rst
Documentation: networking: add OPEN Alliance 10BASE-T1x MAC-PHY serial interface
2024-09-11 20:53:42 -07:00
openvswitch.rst
docs: networking: convert openvswitch.txt to ReST
2020-04-30 12:56:36 -07:00
operstates.rst
docs: operstates: document IF_OPER_TESTING
2021-08-02 15:16:04 +01:00
packet_mmap.rst
docs: networking: packet_mmap: replace dead links with archive.org links
2024-10-28 15:47:10 -07:00
page_pool.rst
net: page_pool: expose page pool stats via netlink
2023-11-28 15:48:39 +01:00
phonet.rst
Documentation: networking: correct spelling
2023-01-31 13:00:47 +01:00
phy-link-topology.rst
Documentation: networking: document phy_link_topology
2024-08-23 13:04:35 +01:00
phy-port.rst
Documentation: networking: Document the phy_port infrastructure
2026-01-13 18:52:36 -08:00
phy.rst
net: phy: remove unused fixup unregistering functions
2026-01-15 19:48:26 -08:00
pktgen.rst
pktgen: Introducing 'SHARED' flag for testing with non-shared skb
2023-09-28 16:25:14 +02:00
plip.rst
docs: networking: convert PLIP.txt to ReST
2020-04-30 12:56:37 -07:00
ppp_generic.rst
docs: update ppp_generic.rst to document new ioctls
2020-12-10 13:57:36 -08:00
proc_net_tcp.rst
docs: networking: convert proc_net_tcp.txt to ReST
2020-04-30 12:56:37 -07:00
psp.rst
psp: add documentation
2025-09-18 12:32:06 +02:00
radiotap-headers.rst
docs: networking: convert radiotap-headers.txt to ReST
2020-04-30 12:56:37 -07:00
rds.rst
Documentation: Fix networking typos
2025-08-18 10:31:20 -06:00
regulatory.rst
Documentation: networking: correct spelling
2023-01-31 13:00:47 +01:00
representors.rst
Documentation: Add documentation for eswitch attribute
2024-03-28 18:20:08 -07:00
rxrpc.rst
Documentation: rxrpc: Demote three sections
2025-09-24 18:12:10 -07:00
scaling.rst
docs: networking: mention that RSS table should be 4x the queue count
2026-02-02 17:06:00 -08:00
sctp.rst
docs: networking: convert sctp.txt to ReST
2020-04-30 12:56:38 -07:00
secid.rst
docs: networking: convert secid.txt to ReST
2020-04-30 12:56:38 -07:00
seg6-sysctl.rst
doc: fix seg6_flowlabel path
2025-10-12 22:51:37 +01:00
segmentation-offloads.rst
net: gso: restore ids of outer ip headers correctly
2025-09-25 12:42:49 +02:00
sfp-phylink.rst
doc: sfp-phylink: update the porting guide with PCS handling
2024-03-07 15:27:05 +01:00
skbuff.rst
skbuff: render the checksum comment to documentation
2022-05-10 17:48:37 -07:00
smc-sysctl.rst
net/smc: handle -ENOMEM from smc_wr_alloc_link_mem gracefully
2025-10-30 13:31:43 +01:00
snmp_counter.rst
docs: automarkup: linkify git revs
2023-11-17 13:13:24 -07:00
sriov.rst
docs: net: document guidance of implementing the SR-IOV NDOs
2024-06-21 10:18:45 +01:00
statistics.rst
net: docs: add missing features that can have stats
2025-10-20 18:31:25 -07:00
strparser.rst
docs: networking: strparser: Fix a typo
2025-03-24 12:14:16 -07:00
switchdev.rst
net: rename netns_local to netns_immutable
2025-03-04 12:44:48 +01:00
sysfs-tagging.rst
Documentation: networking: correct spelling
2023-01-31 13:00:47 +01:00
tc-actions-env-rules.rst
docs: networking: convert tc-actions-env-rules.txt to ReST
2020-04-30 12:56:38 -07:00
tc-queue-filters.rst
Documentation: networking: TC queue based filtering
2022-10-25 10:32:40 +02:00
tcp_ao.rst
Documentation: networking/tcp_ao: typo and grammar fixes
2024-10-03 16:38:48 -07:00
tcp-thin.rst
docs: networking: convert tcp-thin.txt to ReST
2020-04-30 12:56:38 -07:00
team.rst
docs: networking: convert team.txt to ReST
2020-04-30 12:56:38 -07:00
timestamping.rst
net: remove legacy way to get/set HW timestamp config
2026-01-20 18:21:27 -08:00
tipc.rst
Documentation: tipc: fix formatting issue in tipc.rst
2024-11-19 11:17:13 +01:00
tls-handshake.rst
net/handshake: Enable the SNI extension to work properly
2023-05-24 22:05:24 -07:00
tls-offload-layers.svg
Documentation: add TLS offload documentation
2019-05-22 12:18:20 -07:00
tls-offload-reorder-bad.svg
Documentation: add TLS offload documentation
2019-05-22 12:18:20 -07:00
tls-offload-reorder-good.svg
Documentation: add TLS offload documentation
2019-05-22 12:18:20 -07:00
tls-offload.rst
docs: tls: Enhance TLS resync async process documentation
2026-01-17 15:26:13 -08:00
tls.rst
net/tls: support setting the maximum payload size
2025-10-27 16:13:42 -07:00
tproxy.rst
docs: tproxy: fix formatting for nft code block
2025-04-29 00:00:26 +02:00
tuntap.rst
docs: networking: Replace strncpy() with strscpy()
2021-06-04 11:21:43 -06:00
udplite.rst
docs: networking: convert udplite.txt to ReST
2020-05-01 12:24:40 -07:00
vrf.rst
doc: Document unexpected tcp_l3mdev_accept=1 behavior
2021-08-23 11:53:24 +01:00
vxlan.rst
docs: vxlan: add info about device features
2020-09-28 12:50:12 -07:00
x25-iface.rst
docs: networking: fix x25-iface.rst heading & index order
2023-05-10 10:31:46 +01:00
x25.rst
net: x25: Remove unimplemented X.25-over-LLC code stubs
2020-12-12 17:15:33 -08:00
xdp-rx-metadata.rst
doc: xdp: Clarify driver implementation for XDP Rx metadata
2025-07-16 16:36:11 -07:00
xsk-tx-metadata.rst
xsk: Add launch time hardware offload support to XDP Tx metadata
2025-02-20 15:13:45 -08:00