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ManualsBrandsCisco ManualsComputer equipment3005 - VPN Concentrator - Gateway
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15-16
VPN 3000 Series Concentrator Reference Volume II: Administration and Monitoring
78-13274-01
Chapter 15 Statistics
Monitoring | Statistics | IPSec
Received Packets Dropped (Anti-Replay)
The cumulative total of packets dropped during receive processing due to anti-replay errors, by all
currently and previously active IPSec Phase-2 tunnels. If the sequence number of a packet is a duplicate
or out of bounds, there might be a faulty network or a security breach, and the system drops the packet.
Sent Packets Dropped
The cumulative total of packets dropped during send processing by all currently and previously active
IPSec Phase-2 tunnels. This number should be zero; if not, check for a network problem, check the event
log for an internal subsystem failure, or contact Cisco support.
Inbound Authentications
The cumulative total number of inbound individual packet authentications performed by all currently
and previously active IPSec Phase-2 tunnels.
Failed Inbound Authentications
The cumulative total of inbound packet authentications that failed, by all currently and previously active
IPSec Phase-2 tunnels. Failed authentications could indicate corrupted packets or a potential security
attack (“man in the middle”).
Outbound Authentications
The cumulative total of outbound individual packet authentications performed by all currently and
previously active IPSec Phase-2 tunnels.
Failed Outbound Authentications
The cumulative total of outbound packet authentications that failed, by all currently and previously
active IPSec Phase-2 tunnels. This number should be zero or very small; if not, check the event log for
an internal IPSec subsystem problem.
Decryptions
The cumulative total of inbound decryptions performed by all currently and previously active IPSec
Phase-2 tunnels.
Failed Decryptions
The cumulative total of inbound decryptions that failed, by all currently and previously active IPSec
Phase-2 tunnels. This number should be zero or very small; if not, check for misconfiguration or SEP
module problems.