ZyXEL Communications VPN Series Handbook page 631

Security firewalls

Table of Contents

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What Could Go Wrong?

If you see [alert] log message such as below, the voice traffic is blocked by the

priority 1 Security Policy. The ZyWALL/USG checks the security policy in order and

applies the first security policy the traffic matches. If the voice traffic matches a

policy that comes earlier in the list, it may be unexpectedly blocked. Please

change your policy setting or move the voice traffic policy to the higher priority.

Monitor > Log