The SIP protocol uses the SDP message to establish a session, and the SDP message contains the
remote address or multicast address
Digital envelope technology means that the sender uses the receiver's public key to encrypt the data
and then sends the ciphertext to the receiver.
After the firewall detects a virus, which of the following will release the virus?
A. Hit apply exception
B. Not a protocol supported by the firewall
C. The source IP hits the whitelist
D. Hit virus exception
How many IPSec SAs need to be established to encapsulate P packets using the AH+ESP protocol?
Which of the following VPNs cannot be used in site-to-Site scenarios?
IPv6 supports configuring the router authorization function on the device, verifying the identity of
the peer through digital certificates, and selecting legal devices.
An employee of a company accesses the internal web server of the company through the firewall.
The web page of the website can be opened by using a browser, but the reachability of the web
server is tested by using the Ping command, and it shows that it is unreachable. What are the
Which of the following descriptions about digital fingerprints in digital signatures is wrong?
Which of the following SSLVPN functions can and can only access all TCP resources?
When the company network administrator configures dual-system hot backup, (fill in the blank)
configure the status of VRRP backup group l as Active, and configure the virtual IP address as
[sysname] interface GigabitEthernet 0/0/1
[sysname-GigabitEthernet0/0/l] ( ), the command to be typed in the blank is (please fill in the
complete command in all lowercase)
vrrp d 1