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
Summary of Contents for SOHO IE4300
Page 285: ...i Contents Tcl commands 1 cli 1 tclquit 1 tclsh 2...
Page 288: ...i Contents Python commands 1 exit 1 python 1 python filename 2...
Page 291: ...i Contents Automatic configuration commands 1 autodeploy udisk enable 1...
Page 323: ...25 Sysname Ten GigabitEthernet1 0 51 undo shutdown Related commands irf port...
Page 465: ...ii stp vlan enable 55 vlan mapping modulo 55...
Page 602: ...12 Related commands display mvrp statistics...
Page 609: ...i Contents VLAN mapping commands 1 display vlan mapping 1 vlan mapping 2...
Page 678: ...9 Related commands reset pppoe relay statistics...
Page 846: ...i Contents Basic IP forwarding commands 1 display fib 1 ip forwarding table save 2...
Page 1770: ...i Contents Time range commands 1 display time range 1 time range 1...
Page 2026: ...34 Related commands display mac authentication...
Page 2028: ...ii...
Page 2143: ...i Contents User profile commands 1 display user profile 1 user profile 2...
Page 2308: ...61 ipsec transform set...
Page 2531: ...i Contents SAVI commands 1 ipv6 savi down delay 1 ipv6 savi log enable 1 ipv6 savi strict 2...
Page 2534: ...3 Sysname ipv6 savi strict Related commands ipv6 verify source...
Page 2791: ...14 Sysname track 1 Related commands delay display track...
Page 2939: ...9 sntp authentication keyid sntp reliable authentication keyid...
Page 2967: ...27 Related commands apply poe profile poe enable poe max power interface view poe priority...