4
The key ID in the message from the peer device identifies the key used for authentication. The
acl
ipv4-acl-number
or
acl
ipv6-acl-number
option is used to identify the peer device that can
use the key ID.
•
The device uses the
acl
ipv4-acl-number
or
acl
ipv6-acl-number
option to identify
whether the peer device can use the key ID only when an SNTP session to the peer device is to
be established or has already existed.
•
If the specified ACL does not exist, or the specified ACL does not contain any rule, any device
can use the key ID for authentication.
•
If a VPN instance is specified in an ACL rule, the rule applies only to the packets of the VPN
instance. If no VPN instance is specified in an ACL rule, the rule applies only to the packets on
the public network.
To ensure a successful authentication, configure the same key ID, authentication algorithm, and key
on the time server and client.
After you configure an SNTP authentication
key, use the
sntp
reliable
authentication-keyid
command to set it as a trusted key. The key automatically changes to
untrusted after you delete the key. In this case, you do not need to execute the
undo
sntp-service reliable authentication-keyid
command.
The security strength of the five algorithms, in descending order, is HMAC-SHA-512,
HMAC-SHA-384, HMAC-SHA-256, HMAC-SHA-1, and MD5.
You can set a maximum of 128 authentication keys by executing the command.
Examples
# Set an MD5 authentication key, with the key ID of
10
and key value of
BetterKey
. Input the key in
plain text.
<Sysname> system-view
[Sysname] sntp authentication enable
[Sysname] sntp authentication-keyid 10 authentication-mode md5 simple BetterKey
Related commands
sntp authentication enable
sntp reliable authentication-keyid
sntp enable
Use
sntp enable
to enable the SNTP service.
Use
undo sntp enable
to disable the SNTP service.
Syntax
sntp enable
undo sntp enable
Default
The SNTP service is disabled.
Views
System view
Predefined user roles
network-admin
Содержание SOHO IE4300
Страница 114: ...ii tftp client ipv6 source 41 tftp client source 41 tftp ipv6 42 tftp server acl 44 tftp server ipv6 acl 44...
Страница 285: ...i Contents Tcl commands 1 cli 1 tclquit 1 tclsh 2...
Страница 288: ...i Contents Python commands 1 exit 1 python 1 python filename 2...
Страница 291: ...i Contents Automatic configuration commands 1 autodeploy udisk enable 1...
Страница 323: ...25 Sysname Ten GigabitEthernet1 0 51 undo shutdown Related commands irf port...
Страница 396: ...i Contents Bulk interface configuration commands 1 display interface range 1 interface range 1 interface range name 3...
Страница 460: ...i Contents Port isolation commands 1 display port isolate group 1 port isolate enable 2 port isolate group 2...
Страница 465: ...ii stp vlan enable 55 vlan mapping modulo 55...
Страница 589: ...60 Examples Enable LLDP for automatic IP phone discovery Sysname system view Sysname voice vlan track lldp...
Страница 602: ...12 Related commands display mvrp statistics...
Страница 609: ...i Contents VLAN mapping commands 1 display vlan mapping 1 vlan mapping 2...
Страница 678: ...9 Related commands reset pppoe relay statistics...
Страница 846: ...i Contents Basic IP forwarding commands 1 display fib 1 ip forwarding table save 2...
Страница 1073: ...i Contents HTTP redirect commands 1 http redirect https port 1 http redirect ssl server policy 1...
Страница 1087: ...Documentation feedback You can e mail your comments about product documentation to info h3c com We appreciate your comments...
Страница 1340: ...9 Sysname ipv6 route static default preference 120 Related commands display ipv6 routing table protocol...
Страница 1649: ...Documentation feedback You can e mail your comments about product documentation to info h3c com We appreciate your comments...
Страница 1668: ...Documentation feedback You can e mail your comments about product documentation to info h3c com We appreciate your comments...
Страница 1770: ...i Contents Time range commands 1 display time range 1 time range 1...
Страница 2026: ...34 Related commands display mac authentication...
Страница 2028: ...ii...
Страница 2143: ...i Contents User profile commands 1 display user profile 1 user profile 2...
Страница 2308: ...61 ipsec transform set...
Страница 2473: ...i Contents TCP attack prevention commands 1 tcp anti naptha enable 1 tcp check state interval 1 tcp state 2...
Страница 2531: ...i Contents SAVI commands 1 ipv6 savi down delay 1 ipv6 savi log enable 1 ipv6 savi strict 2...
Страница 2534: ...3 Sysname ipv6 savi strict Related commands ipv6 verify source...
Страница 2541: ...i Contents Crypto engine commands 1 display crypto engine 1 display crypto engine statistics 1 reset crypto engine statistics 3...
Страница 2545: ...i Contents FIPS commands 1 display crypto version 1 display fips status 1 fips mode enable 2 fips self test 4...
Страница 2791: ...14 Sysname track 1 Related commands delay display track...
Страница 2939: ...9 sntp authentication keyid sntp reliable authentication keyid...
Страница 2967: ...27 Related commands apply poe profile poe enable poe max power interface view poe priority...
Страница 3240: ...Documentation feedback You can e mail your comments about product documentation to info h3c com We appreciate your comments...
Страница 3263: ...Documentation feedback You can e mail your comments about product documentation to info h3c com We appreciate your comments...