X4000
User’s Guide
251
Basic IP Settings
8
4.
Is a WAN partner selected as default interface?
In this case, the associated DNS are asked. If the connection to the WAN
partner is not active, an attempt is made to set it up.
–
If a DNS can resolve the name, the information is forwarded and a
dynamic entry created in the cache.
–
If none of the DNS asked can resolve the name or no default interface
has been selected, see 5.
5.
Is overwriting the global name server addresses admissible (Overwrite
Global Nameserver =
yes)?
In this case, a connection is set up to the first WAN partner, which is
configured so that addresses of DNS can be sent – provided this has not
previously been attempted. If name server negotiation is successful, these
are entered as global name servers and are therefore available for further
requests.
6.
Request is answered with server error.
Overview of Configuration with the Setup Tool
The configuration and monitoring of name resolution in
X4000
is set in:
■
IP
➧
S
TATIC
S
ETTINGS
:
■
IP
➧
DNS
■
IP
➧
DNS
➧
S
TATIC
H
OSTS
■
IP
➧
DNS
➧
F
ORWARDED
D
OMAINS
■
IP
➧
DNS
➧
D
YNAMIC
C
ACHE
■
IP
➧
DNS
➧
A
DVANCED
S
ETTINGS
...
■
IP
➧
DNS
➧
G
LOBAL
S
TATISTICS
...
■
WAN P
ARTNER
➧
E
DIT
➧
IP
➧
A
DVANCED
S
ETTINGS
If one of the DNS answers with "non-existent domain", this answer is forwarded
to the source of the request immediately and included in the cache as negative
entry.
Summary of Contents for X4000
Page 4: ...4 X4000 User s Guide...
Page 6: ...6 X4000 User s Guide Table of Contents...
Page 14: ...14 X4000 User s Guide Table of Contents...
Page 30: ...30 X4000 User s Guide Welcome 1...
Page 34: ...34 X4000 User s Guide General Safety Precautions 2...
Page 68: ...68 X4000 User s Guide Hardware Description and Installation 3...
Page 92: ...92 X4000 User s Guide Configuration Requirements 4...
Page 118: ...118 X4000 User s Guide Fast Configuration with the Configuration Wizard Basic Unit 6...
Page 362: ...362 X4000 User s Guide Configuration of Security Functions and Firewall 10...
Page 374: ...374 X4000 User s Guide Configuration Management 11...
Page 386: ...386 X4000 User s Guide Troubleshooting 12...
Page 433: ...X4000 User s Guide 433 15...
Page 449: ...X4000 User s Guide 449 15...
Page 468: ...468 X4000 User s Guide General Safety Precautions in 15 Different Languages 15...
Page 496: ...496 X4000 User s Guide Index...
Page 498: ...498 X4000 User s Guide Document 71000L Version1 3...