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Troubleshooting
108
ETEP CLI User Guide
When troubleshooting traffic problems, it may be helpful to understand how the ETEP handles source
and destination MAC addressing in inbound and outbound packets. Source MAC addressing is
determined dynamically, based on the transparency setting, traffic flow, and policy, as described in
Traffic destined for a virtual IP
address is being discarded (the
ETEP is operating in non-
transparent mode)
Check the ETEP configuration for the following:
•
Transparent mode is disabled.
•
The ETEP is configured for Layer 3 operation
•
The local and remote port IP addresses, masks, and gateways
have been entered correctly.
If a default gateway is not configured and the destination IP
address is on a different subnet than the transmitting port, the
packets will be discarded.
In EncrypTight ETPM:
•
In the Network Set, verify that the network addressing mode is
remote IP or virtual IP.
•
In the policy editor, clear the check boxes for all Addressing
Mode Overrides.
In the router:
•
Add a static route entry and static ARP entry to the WAN router
to ensure that traffic destined for the virtual IP address is sent to
the ETEP’s remote port.
See the
EncrypTight User Guide
for more information about
creating and troubleshooting policies that use virtual IP addresses.
Table 56
MAC resolution and transparency settings
Transparency Mode
Policy Type
Source MAC Address
Destination MAC
Address
Transparent
•
Encrypt
•
Clear
Copies the source MAC
address from the incoming
packet.
When the transmitting port
is on the destination
network, the ETEP uses
ARP to resolve the
destination MAC address.
When the transmitting port
and the destination
address are on different
subnets, the ETEP sets
the destination MAC
address to that of the
default gateway.
Non-transparent
•
Encrypt
•
Clear
Uses the MAC address of
the transmitting port as the
source MAC address.
Table 55
Policy Symptoms and Solutions
Symptom
Explanation and Possible Solutions
Содержание ET0010A
Страница 7: ...8 ETEP CLI User Guide Contents...
Страница 15: ...Getting Started 16 ETEP CLI User Guide...
Страница 33: ...User Administration 34 ETEP CLI User Guide...
Страница 55: ...Configuring the ETEP 56 ETEP CLI User Guide...
Страница 97: ...Creating Policies 98 ETEP CLI User Guide...
Страница 101: ...Maintenance 102 ETEP CLI User Guide...
Страница 119: ...Troubleshooting 120 ETEP CLI User Guide...
Страница 123: ...FIPS 140 2 Level 2 Operation 124 ETEP CLI User Guide...
Страница 205: ...Command Reference 206 ETEP CLI User Guide...
Страница 211: ...Index 212 ETEP CLI User Guide...