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# 信息港5楼测试环境使用自定义特征udp.payload.s2c_first_data的原始数据加偏移时命中的包中存在误报
| ID | Creation Date | Assignee | Status |
|----|----------------|----------|--------|
| OMPUB-829 | 2023-03-01T13:30:31.000+0800 | 刘学利 | 已解决 |
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使用自定义特征udp.payload.s2c_first_data的原始数据加偏移时命中的包中存在误报在命中的数据包中01000000特征从1字节开始也命中了特征。**liuxueli** commented on *2023-03-11T14:53:10.659+0800*:
* offset+depth就是个闭区间[0,4]包含了前5个字节所以能命中特征将depth改为3可避免不符合特征的payload命中。
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**daikaiqiang** commented on *2023-03-13T11:23:36.995+0800*:
* 已修改特征中depth数值为3目前在信息港5楼测试环境进行测试并捕包
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# Attachments
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Attachment: 192.168.54.82.62936-220.181.111.133.4040_290704313442413406.pcapng
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[192.168.54.82.62936-220.181.111.133.4040_290704313442413406.pcapng](https://gfwleak.exec.li/admin/geedge-jira/raw/branch/master/attachment/35632/192.168.54.82.62936-220.181.111.133.4040_290704313442413406.pcapng)
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Attachment: wireguard_202302260848019.json
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[wireguard_202302260848019.json](https://gfwleak.exec.li/admin/geedge-jira/raw/branch/master/attachment/35629/wireguard_202302260848019.json)
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Attachment: 微信图片_20230301115455.png
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![微信图片_20230301115455.png](https://gfwleak.exec.li/admin/geedge-jira/raw/branch/master/attachment/35631/微信图片_20230301115455.png)
Attachment: 微信图片_20230301115502.png
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![微信图片_20230301115502.png](https://gfwleak.exec.li/admin/geedge-jira/raw/branch/master/attachment/35630/微信图片_20230301115502.png)
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