What you will need
IP Address Table (example):
Item | Description | Assigned By |
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External IP | The IP address that identifies the SOHO to the Internet. | ISP |
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Address |
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| Site A: | 207.168.55.2 |
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| Site B: | 68.130.44.15 |
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External | The overlay of bits that determines which part of the IP | ISP |
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Subnet Mask | address identifies your network. For example, a Class C |
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| address licenses 256 addresses and has a netmask of |
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| 255.255.255.0. |
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| Site A: | 255.255.255.0 |
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| Site B: 255.255.255.0 |
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Local Network | A private network address used by an organization’s local | You |
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Address | network for identifying itself within the network. A local |
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| network address cannot be used as a external IP address. |
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| WatchGuard recommends using an address from one of the |
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| reserved ranges: |
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| 10.0.0.0 — 255.0.0.0 |
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| 172.16.0.0 — 255.240.0.0 |
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| 192.168.0.0/16 — 255.255.0.0 |
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| Site A: | 255.255.255.0 |
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| Site B: 255.255.255.0 |
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Shared Secret | A phrase stored at both ends of the tunnel to authenticate | You |
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| the transmission as being from the claimed origin. The |
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| secret can be any phrase, but mixing numerical, special, |
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| alphabetical, and uppercase characters improves security. |
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| For example, “Gu4c4mo!3” is better than “guacamole” |
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| Site A: | OurLittleSecret |
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| Site B: OurLittleSecret |
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Encryption | Encryption method determines the length in bits of the key | You |
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Method | used to encrypt and decrypt communication packets. DES is |
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| a |
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| more secure. It is also slower. Either 3DES or DES may be |
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| selected as long as both sides use the same method. |
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| Site A: | 3DES |
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| Site B: 3DES |
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Authentication | Both sides must use the same method. | You |
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| Site A: | MD5 |
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| Site B: MD5 |
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User Guide 5.0 | 99 |
