3Com 3C888 User Guide - Page 66

Have a Static IP Address, then choose, Network Address Translation NAT

Get 3Com 3C888 - OfficeConnect Dual 56K LAN Modem Router PDF manuals and user guides
UPC - 662705326443
View all 3Com 3C888 manuals
Add to My Manuals
Save this manual to your list of manuals

Page 66 highlights

66 CHAPTER 6: CONFIGURING THE DUAL 56K LAN MODEM FOR PRIVATE NETWORK ACCESS 21 Choose whether or not you want users on the LAN to be able to access the Internet through your private network's direct Internet connection, if your private network allows you this option. 22 Choose whether or not you would like to use PPP Data Compression when transferring data. 23 For Network Address Translation (NAT), your choice depends upon the IP addressing scheme (dynamic or static) used by the private network into which you will be dialing. Follow this rule of thumb: s If you performed the IP Address check in Chapter 3 and optimized your computer for use with dynamic IP addressing or found that it was already optimized, choose Yes to leave NAT enabled s If you performed the IP Address check and set up your computer for static IP addressing, according to the instructions in "Setting Up Your Computer If You Have a Static IP Address," then choose No to disable NAT. With NAT enabled, the LAN Modem makes translations between a single IP address issued by the private network to the LAN Modem and individual IP addresses of the computers on the LAN (assigned by the LAN Modem). This translation allows multiple users on the LAN to access the private network by appearing to be a single connection with a single IP address. To better understand how NAT translation works, refer to the description of NAT in Appendix A, "Networking Primer." 24 In the WAN Link IP Address and Subnet mask fields, if the private network to which you are connecting requires a static IP address and subnet mask, enter those values here. Otherwise, leave these fields empty. 25 For Allow Automatic Call Initiation, leave the default setting which is Yes. If you select No, you will have to manually launch a call to this service provider every time you want to connect. You may want to change this field to No later on if you find that calls are being connected unintentionally as a result of packets generated by other computers on the LAN. 26 For Enable Intelligent NAT, leave the default setting, which is Yes, in order for the LAN Modem to better support Internet applications and games. The LAN Modem delivers all unsolicited TCP/UDP packets to the workstation that is currently communicating with the remote host that has generated these packets. If you set this field to No, all unsolicited TCP/UDP packets are delivered to the default workstation. 27 In the Default Workstation for Incoming Packets field, specify the workstation to which all unsolicited TCP/UDP packets should be delivered. Note that if the Enable Intelligent NAT field is set to Yes, the LAN Modem first attempts to deliver the unsolicited TCP/UDP packets to the workstation that is currently communicating with the remote host that has generated these packets. Only if no such workstation is found are the packets delivered to the specified default workstation. 28 Advanced users can review or make changes to the V.90 modem settings associated with this service provider by clicking Modem Settings. To leave these values set to their default settings (recommended), click Submit. For information on changing these settings, refer to "Configuring V.90 Modem Control Parameters"

  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8
  • 9
  • 10
  • 11
  • 12
  • 13
  • 14
  • 15
  • 16
  • 17
  • 18
  • 19
  • 20
  • 21
  • 22
  • 23
  • 24
  • 25
  • 26
  • 27
  • 28
  • 29
  • 30
  • 31
  • 32
  • 33
  • 34
  • 35
  • 36
  • 37
  • 38
  • 39
  • 40
  • 41
  • 42
  • 43
  • 44
  • 45
  • 46
  • 47
  • 48
  • 49
  • 50
  • 51
  • 52
  • 53
  • 54
  • 55
  • 56
  • 57
  • 58
  • 59
  • 60
  • 61
  • 62
  • 63
  • 64
  • 65
  • 66
  • 67
  • 68
  • 69
  • 70
  • 71
  • 72
  • 73
  • 74
  • 75
  • 76
  • 77
  • 78
  • 79
  • 80
  • 81
  • 82
  • 83
  • 84
  • 85
  • 86
  • 87
  • 88
  • 89
  • 90
  • 91
  • 92
  • 93
  • 94
  • 95
  • 96
  • 97
  • 98
  • 99
  • 100
  • 101
  • 102
  • 103
  • 104
  • 105
  • 106
  • 107
  • 108
  • 109
  • 110
  • 111
  • 112
  • 113
  • 114
  • 115
  • 116
  • 117
  • 118
  • 119
  • 120
  • 121
  • 122
  • 123
  • 124
  • 125
  • 126
  • 127
  • 128
  • 129
  • 130
  • 131
  • 132
  • 133
  • 134
  • 135
  • 136
  • 137
  • 138
  • 139
  • 140
  • 141
  • 142
  • 143
  • 144
  • 145
  • 146
  • 147
  • 148
  • 149
  • 150
  • 151
  • 152
  • 153
  • 154
  • 155
  • 156
  • 157
  • 158
  • 159
  • 160
  • 161
  • 162
  • 163
  • 164
  • 165
  • 166
  • 167
  • 168
66
C
HAPTER
6: C
ONFIGURING
THE
D
UAL
56K LAN M
ODEM
FOR
P
RIVATE
N
ETWORK
A
CCESS
21
Choose whether or not you want users on the LAN to be able to access the Internet
through your private network’s direct Internet connection, if your private network
allows you this option
.
22
Choose whether or not you would like to use PPP Data Compression when
transferring data.
23
For
Network Address Translation (NAT)
, your choice depends upon the IP
addressing scheme (dynamic or static) used by the private network into which you
will be dialing. Follow this rule of thumb:
■
If you performed the IP Address check in Chapter 3 and optimized your
computer for use with dynamic IP addressing or found that it was already
optimized, choose
Yes
to leave NAT enabled
■
If you performed the IP Address check and set up your computer for static IP
addressing, according to the instructions in “Setting Up Your Computer If You
Have a Static IP Address,” then choose
No
to disable NAT.
With NAT enabled, the LAN Modem makes translations between a single IP
address issued by the private network to the LAN Modem and individual IP
addresses of the computers on the LAN (assigned by the LAN Modem). This
translation allows multiple users on the LAN to access the private network by
appearing to be a single connection with a single IP address. To better understand
how NAT translation works, refer to the description of NAT in Appendix A,
“Networking Primer.”
24
In the WAN Link IP Address and Subnet mask fields, if the private network to
which you are connecting requires a static IP address and subnet mask, enter
those values here. Otherwise, leave these fields empty.
25
For Allow Automatic Call Initiation, leave the default setting which is
Yes
.
If you select
No
, you will have to manually launch a call to this service provider
every time you want to connect. You may want to change this field to
No
later on
if you find that calls are being connected unintentionally as a result of packets
generated by other computers on the LAN.
26
For Enable Intelligent NAT, leave the default setting, which is
Yes,
in order for the
LAN Modem to better support Internet applications and games.
The LAN Modem delivers all unsolicited TCP/UDP packets to the workstation that
is currently communicating with the remote host that has generated these
packets. If you set this field to
No
, all unsolicited TCP/UDP packets are delivered to
the default workstation.
27
In the Default Workstation for Incoming Packets field, specify the workstation to
which all unsolicited TCP/UDP packets should be delivered.
Note that if the Enable Intelligent NAT field is set to
Yes
, the LAN Modem first
attempts to deliver the unsolicited TCP/UDP packets to the workstation that is
currently communicating with the remote host that has generated these packets.
Only if no such workstation is found are the packets delivered to the specified
default workstation.
28
Advanced users can review or make changes to the V.90 modem settings
associated with this service provider by clicking
Modem Settings
. To leave these
values set to their default settings (recommended), click
Submit.
For information
on changing these settings, refer to “Configuring V.90 Modem Control
Parameters”