How do you check syslog information to ensure that it has not been altered in transit?

A.
host IDS inspects the packet to ensure time stamps are concurrent

B.
packets use CRC to ensure data has not been altered in transit

C.
Syslog has no checking to ensure that the packet contents have not been altered in transit

D.
the firewall inspects the packet to ensure time stamps are concurrent

E.
IPSec inspects the packet to ensure time stamps are concurrent