SMCWBR14T-G無線寬頻分享器連線問題

請問各位大大:
我現在用SMCWBR14T-G無線寬頻分享器
韌體V1.19
我現在這邊有接4台電腦
其他三台上網都沒問題
唯獨這一台上網....常常網頁或圖片會開不起來

我進去裡面看顯示
Security Log
View any attempts that have been made to gain access to your network.
2008-01-25 19:10:34 **SYN Flood to Host** 192.168.10.109, 1058->> 202.43.200.101, 80 (from WAN Outbound)