User's Manual Part 3
Table Of Contents
- Chapter 9 Maintenance
- Chapter 10 Advanced Configuration
- Chapter 11 Troubleshooting
- Appendix A Technical Specifications
- Appendix B Networks, Routing, and Firewall Basics
- Appendix C Preparing Your Network
- Appendix D Firewall Log Formats
- Appendix E Wireless Networking Basics
- Appendix F Virtual Private Networking
- Appendix G NETGEAR VPN Configuration FVS318 or FVM318 to FWG114P
- Appendix H NETGEAR VPN Configuration FVS318 or FVM318 with FQDN to FVS328
- Glossary
- Index
Reference Manual for the ProSafe Wireless 802.11g Firewall/Print Server Model FWG114P
B-6 Networks, Routing, and Firewall Basics
March 2004, 202-10027-01
The following table lists the additional subnet mask bits in dotted-decimal notation. To use the
table, write down the original class netmask and replace the 0 value octets with the dotted-decimal
value of the additional subnet bits. For example, to partition your Class C network with subnet
mask 255.255.255.0 into 16 subnets (4 bits), the new subnet mask becomes 255.255.255.240.
The following table displays several common netmask values in both the dotted-decimal and the
masklength formats.
Table 11-1. Netmask Notation Translation Table for One Octet
Number of Bits Dotted-Decimal Value
1 128
2 192
3 224
4 240
5 248
6 252
7 254
8 255
Table 11-2. Netmask Formats
Dotted-Decimal Masklength
255.0.0.0 /8
255.255.0.0 /16
255.255.255.0 /24
255.255.255.128 /25
255.255.255.192 /26
255.255.255.224 /27
255.255.255.240 /28
255.255.255.248 /29
255.255.255.252 /30
255.255.255.254 /31
255.255.255.255 /32