Actions
Configuration file format¶
The initial state of NFD is configured using a textual file in Boost INFO format.
; The general section contains settings of nfd process.
general
{
; Specify a user and/or group for NFD to drop privileges to
; when not performing privileged tasks. NFD does not drop
; privileges by default.
; user ndn-user
; group ndn-user
}
log
{
; default_level specifies the logging level for modules
; that are not explicitly named. All debugging levels
; listed above the selected value are enabled.
;
; Valid values:
;
; NONE ; no messages
; ERROR ; error messages
; WARN ; warning messages
; INFO ; informational messages (default)
; DEBUG ; debugging messages
; TRACE ; trace messages (most verbose)
; ALL ; all messages
default_level INFO
; You may override default_level by assigning a logging level
; to the desired module name. Module names can be found in two ways:
;
; Run:
; nfd --modules
;
; Or look for NFD_LOG_INIT(<module name>) statements in source files.
; Note that the "nfd." prefix can be omitted.
;
; Example module-level settings:
;
; FibManager DEBUG
; Forwarder INFO
}
; The tables section configures the CS, PIT, FIB, Strategy Choice, and Measurements
tables
{
; ContentStore size limit in number of packets
; default is 65536, about 500MB with 8KB packet size
cs_max_packets 65536
; Set the CS replacement policy.
; Available policies are: priority_fifo, lru
cs_policy lru
; Set a policy to decide whether to cache or drop unsolicited Data.
; Available policies are: drop-all, admit-local, admit-network, admit-all
cs_unsolicited_policy drop-all
; Set the forwarding strategy for the specified prefixes:
; <prefix> <strategy>
strategy_choice
{
/ /localhost/nfd/strategy/best-route
/localhost /localhost/nfd/strategy/multicast
/localhost/nfd /localhost/nfd/strategy/best-route
/ndn/broadcast /localhost/nfd/strategy/multicast
}
; Declare network region names
; These are used for mobility support. An Interest carrying a Link object is
; assumed to have reached the producer region if any delegation name in the
; Link object is a prefix of any region name.
network_region
{
; /example/region1
; /example/region2
}
}
; The face_system section defines what faces and channels are created.
face_system
{
; This section contains options that apply to multiple face protocols.
general
{
enable_congestion_marking yes ; set to 'no' to disable congestion marking on supported faces, default 'yes'
}
; The unix section contains settings for Unix stream faces and channels.
; A Unix channel is always listening; delete the unix section to disable
; Unix stream faces and channels.
unix
{
; The default transport is unix:///run/nfd.sock (on Linux) or unix:///var/run/nfd.sock (on
; other platforms). This should match the "transport" field in client.conf for ndn-cxx. If you
; wish to use TCP instead of Unix sockets with ndn-cxx, change "transport" to an appropriate
; TCP FaceUri.
path /run/nfd.sock ; Unix stream listener path
}
; The tcp section contains settings for TCP faces and channels.
tcp
{
listen yes ; set to 'no' to disable TCP listener, default 'yes'
port 6363 ; TCP listener port number
enable_v4 yes ; set to 'no' to disable IPv4 channels, default 'yes'
enable_v6 yes ; set to 'no' to disable IPv6 channels, default 'yes'
; A TCP face has local scope if the local and remote IP addresses match the whitelist but not the blacklist
local
{
whitelist
{
subnet 127.0.0.0/8
subnet ::1/128
}
blacklist
{
}
}
}
; The udp section contains settings for UDP faces and channels.
udp
{
; UDP unicast settings.
listen yes ; set to 'no' to disable UDP listener, default 'yes'
port 6363 ; UDP listener port number
enable_v4 yes ; set to 'no' to disable IPv4 channels, default 'yes'
enable_v6 yes ; set to 'no' to disable IPv6 channels, default 'yes'
; Time (in seconds) before closing an idle UDP unicast face.
; The actual timeout will occur anytime between idle_timeout and 2*idle_timeout.
; The default is 600 (10 minutes).
idle_timeout 600
; Maximum payload size for outgoing packets on unicast faces, used in NDNLPv2 fragmentation.
; This must be between 64 and 8800. The default is 8800.
; This value excludes IPv4/IPv6/UDP headers. On an Ethernet link of MTU=1500, setting this
; to 1452 would leave enough room for IP+UDP headers and prevent IP fragmentation.
; This option is not changable during runtime configuration reload, but the MTU of an
; individual face can be updated via NFD Management Protocol or the 'nfdc' tool.
unicast_mtu 8800
; UDP multicast settings.
; By default, NFD creates one UDP multicast face per NIC.
;
; In multi-homed Linux machines these settings will NOT work without
; root or setting the appropriate permissions:
;
; sudo setcap cap_net_raw=eip /path/to/nfd
;
mcast yes ; set to 'no' to disable UDP multicast, default 'yes'
mcast_group 224.0.23.170 ; UDP multicast group (IPv4)
mcast_port 56363 ; UDP multicast port number (IPv4)
mcast_group_v6 ff02::1234 ; UDP multicast group (IPv6)
mcast_port_v6 56363 ; UDP multicast port number (IPv6)
mcast_ad_hoc no ; set to 'yes' to make all UDP multicast faces "ad hoc", default 'no'
; Whitelist and blacklist can contain, in no particular order:
; - interface names, including wildcard patterns (e.g., 'ifname eth0', 'ifname en*', 'ifname wlp?s0')
; - MAC addresses (e.g., 'ether 85:3b:4d:d3:5f:c2')
; - IPv4 subnets (e.g., 'subnet 192.0.2.0/24')
; - IPv6 subnets (e.g., 'subnet 2001:db8::/32')
; - a single asterisk ('*') that matches all interfaces
; By default, all interfaces are whitelisted.
whitelist
{
*
}
blacklist
{
}
}
; The ether section contains settings for Ethernet faces and channels.
; These settings will NOT work without root or setting the appropriate
; permissions:
;
; sudo setcap cap_net_raw,cap_net_admin=eip /path/to/nfd
;
; You may need to install a package to use setcap:
;
; **Ubuntu:**
;
; sudo apt install libcap2-bin
;
; **Mac OS X:**
;
; curl https://bugs.wireshark.org/bugzilla/attachment.cgi?id=3373 -o ChmodBPF.tar.gz
; tar zxvf ChmodBPF.tar.gz
; open ChmodBPF/Install\ ChmodBPF.app
;
; or manually:
;
; sudo chgrp admin /dev/bpf*
; sudo chmod g+rw /dev/bpf*
;
ether
{
; Ethernet unicast settings.
listen yes ; set to 'no' to disable Ethernet listener, default 'yes'
; Time (in seconds) before closing an idle Ethernet unicast face.
; The actual timeout will occur anytime between idle_timeout and 2*idle_timeout.
; The default is 600 (10 minutes).
idle_timeout 600
; Ethernet multicast settings.
; By default, NFD creates one Ethernet multicast face per NIC.
mcast yes ; set to 'no' to disable Ethernet multicast, default 'yes'
mcast_group 01:00:5E:00:17:AA ; Ethernet multicast group
mcast_ad_hoc no ; set to 'yes' to make all Ethernet multicast faces "ad hoc", default 'no'
; Whitelist and blacklist can contain, in no particular order:
; - interface names, including wildcard patterns (e.g., 'ifname eth0', 'ifname en*', 'ifname wlp?s0')
; - MAC addresses (e.g., 'ether 85:3b:4d:d3:5f:c2')
; - IPv4 subnets (e.g., 'subnet 192.0.2.0/24')
; - IPv6 subnets (e.g., 'subnet 2001:db8::/32')
; - a single asterisk ('*') that matches all interfaces
; By default, all interfaces are whitelisted.
whitelist
{
*
}
blacklist
{
}
}
; The websocket section contains settings for WebSocket faces and channels.
websocket
{
listen yes ; set to 'no' to disable WebSocket listener, default 'yes'
port 9696 ; WebSocket listener port number
enable_v4 yes ; set to 'no' to disable listening on IPv4 socket, default 'yes'
enable_v6 yes ; set to 'no' to disable listening on IPv6 socket, default 'yes'
}
; The netdev_bound section defines faces bound to netdevices.
netdev_bound
{
; A rule consists of a whitelist, a blacklist, and a set of remote FaceUris, and will cause the
; creation of zero or more faces bound to netdevices. One face will be created per accepted
; netdev per remote. There can be any number of rules in the netdev_bound section.
; rule
; {
; ; Remote FaceUri to which the netdev-bound faces will connect.
; ; Rule can contain multiple remotes. One face will be created for each remote.
; ; All FaceUris must be in canonical form. Currently only udp4 and udp6 are supported.
; remote udp4://192.0.2.1:6363
;
; ; Whitelist and blacklist can contain, in no particular order:
; ; - interface names, including wildcard patterns (e.g., 'ifname eth0', 'ifname en*', 'ifname wlp?s0')
; ; - MAC addresses (e.g., 'ether 85:3b:4d:d3:5f:c2')
; ; - IPv4 subnets (e.g., 'subnet 192.0.2.0/24')
; ; - IPv6 subnets (e.g., 'subnet 2001:db8::/32')
; ; - a single asterisk ('*') that matches all interfaces
; ; By default, all interfaces are whitelisted.
; whitelist
; {
; *
; }
; blacklist
; {
; }
; }
}
}
; The authorizations section grants privileges to authorized keys.
authorizations
{
; An authorize section grants privileges to a NDN certificate.
authorize
{
; If you do not already have NDN certificate, you can generate
; one with the following commands.
;
; 1. Generate and install a self-signed identity certificate:
;
; ndnsec key-gen /$(whoami) | ndnsec cert-install -
;
; Note that the argument to 'ndnsec key-gen' will be the identity name of
; the new key (in this case, /your-username). Identities are hierarchical
; NDN names and may have multiple components (e.g., /ndn/ucla/edu/alice).
; You may create additional keys and identities as needed.
;
; 2. Dump the NDN certificate to a file:
;
; sudo mkdir -p /usr/local/etc/ndn/keys/
; ndnsec cert-dump -i /$(whoami) > default.ndncert
; sudo mv default.ndncert /usr/local/etc/ndn/keys/default.ndncert
;
; The "certfile" field below specifies the default key directory for
; your machine. You may move your newly created key to the location it
; specifies or path.
; certfile keys/default.ndncert ; NDN identity certificate file
certfile any ; "any" authorizes command interests signed under any certificate,
; i.e., no actual validation.
privileges ; set of privileges granted to this identity
{
faces
fib
cs
strategy-choice
}
}
; You may have multiple authorize sections that specify additional
; certificates and their privileges.
; authorize
; {
; certfile keys/this_cert_does_not_exist.ndncert
; authorize
; privileges
; {
; faces
; }
; }
}
rib
{
; The following localhost_security allows anyone to register routing entries in local RIB
localhost_security
{
trust-anchor
{
type any
}
}
; localhop_security should be enabled when NFD runs on a hub.
; "/localhop/nfd/fib" command prefix will be disabled when localhop_security section is missing.
; localhop_security
; {
; ; This section defines the trust model for NFD RIB Management. It consists of rules and
; ; trust-anchors, which are briefly defined in this file. For more information refer to
; ; validator configuration file format documentation:
; ;
; ; https://named-data.net/doc/ndn-cxx/current/tutorials/security-validator-config.html
; ;
; ; A trust-anchor is a pre-trusted certificate. This can be any certificate that is the
; ; root of certification chain (e.g., NDN testbed root certificate) or an existing
; ; default system certificate `default.ndncert`.
; ;
; ; A rule defines conditions a valid packet MUST have. A packet must satisfy one of the
; ; rules defined here. A rule can be broken into two parts: matching & checking. A packet
; ; will be matched against rules from the first to the last until a matched rule is
; ; encountered. The matched rule will be used to check the packet. If a packet does not
; ; match any rule, it will be treated as invalid. The matching part of a rule consists
; ; of `for` and `filter` sections. They collectively define which packets can be checked
; ; with this rule. `for` defines packet type (data or interest) and `filter` defines
; ; conditions on other properties of a packet. Right now, you can only define conditions
; ; on packet name, and you can only specify ONLY ONE filter for packet name. The
; ; checking part of a rule consists of `checker`, which defines the conditions that a
; ; VALID packet MUST have. See comments in checker section for more details.
;
; rule
; {
; id "RIB Command Interest"
; for interest
; ; match Commmand Interest name
; ; last three components are ControlParameters, timestamp, and random-value
; ; SignatureInfo and SignatureValue are stripped before passing to the filter
; filter
; {
; type name
; regex ^<localhop><nfd><rib>[<register><unregister>]<>{3}$
; }
; checker
; {
; type customized
; sig-type ecdsa-sha256
; ; KeyLocator must be either a key name or a certificate name
; key-locator
; {
; type name
; regex ^<>*<KEY><>{1,3}$
; }
; }
; }
; rule
; {
; id "NDN Testbed Certificate Hierarchy"
; for data
; ; match certificate name only
; filter
; {
; type name
; regex ^<>*<KEY><>{3}$
; }
; checker
; {
; type customized
; sig-type ecdsa-sha256
; key-locator
; {
; type name
; ; issuer subject name must be a prefix of issued certificate name
; hyper-relation
; {
; k-regex ^(<>*)<KEY><>{1,3}$
; k-expand \\1
; h-relation is-prefix-of
; p-regex ^(<>*)$
; p-expand \\1
; }
; }
; }
; }
; trust-anchor
; {
; type file
; ; certificate path, relative to this config file
; file-name keys/default.ndncert
; }
; ; trust-anchor entry may be repeated to specify multiple trust anchors
; }
; The following localhop_security should be enabled when NFD runs on a hub,
; which accepts all remote registrations and is a short-term solution.
; localhop_security
; {
; trust-anchor
; {
; type any
; }
; }
; The following prefix_announcement_validation accepts any prefix announcement
prefix_announcement_validation
{
trust-anchor
{
type any
}
}
auto_prefix_propagate
{
cost 15 ; forwarding cost of prefix registered on remote router
timeout 10000 ; timeout (in milliseconds) of prefix registration command for propagation
refresh_interval 300 ; interval (in seconds) before refreshing the propagation
; This setting should be less than face_system.udp.idle_time,
; so that the face is kept alive on the remote router.
base_retry_wait 50 ; base wait time (in seconds) before retrying propagation
max_retry_wait 3600 ; maximum wait time (in seconds) before retrying propagation
; for consequent retries, the wait time before each retry is calculated based on the back-off
; policy. Initially, the wait time is set to base_retry_wait, then it will be doubled for every
; retry unless beyond the max_retry_wait, in which case max_retry_wait is set as the wait time.
}
; If enabled, routes registered with origin=client (typically from auto_prefix_propagate)
; will be readvertised into local NLSR daemon.
readvertise_nlsr no
}
Updated by Davide Pesavento almost 3 years ago ยท 19 revisions