Dell Unity：Unity NAS 上的 Eicar 惡意軟體測試發生網路錯誤

There is a problem accessing \\172.xx.xx.xx\abc  (NasIP \testfolder ) 
You have received this message because an event that has occurred on your Unity system requires your attention. The alert is:
"The virus checker server 172.xx.xx.xx has encountered an error and is no longer operational.(Error: OFFLINE, httpStatus: 1006 Connection Disconnected)"
The virus checker server 172.xx.xx.xx has encountered an error and is no longer operational.(Error: ERROR_AVINTERFACE)"
"No virus checker server is available."

Unity 的故障診斷步驟：

1. 在 Unity 記錄位置中搜尋：

EMCSystemBackup.log  - cd /EMC/C4core/log/
grep -i infect EMCSystemBackup.log
grep -i blocked EMCSystemBackup.log

c4_safe_ktrace.log – cd /EMC/C4core/log/
grep -i "virus checker" c4_safe_ktrace.log
zgrep -i "virus checker" /EMC/C4core/log/c4_safe_ktrace.log*

Nas server name/IP : OV-xx-x-xxx-xx-001/ 172.xx.xx.xx
AV server IP address: 172.xx.xx.xx

 

Command Usage: svc_cava
svc_cava { <NAS_Server_Name> | ALL }
 [-h | --help]
 | <no option>
 | -stats
 | [ -set accesstime={ now | none | [[[[yy]mm]dd]hh]mm[.ss] }]
 | [ -fsscan [<fs_mountpath> { -list | -create | -delete } ]
Example : svc_cava -stats
svc_cava nas1 -stats
svc_cava nas1

08:38:39 root@DE4142343780xx spa:/EMC/C4Core/log# svc_cava OV-xxx-x-xxx-xx-001 -stats
OV-xxx-x-xxx-xx-001 : commands processed: 1
command(s) succeeded
output is complete 
1712653384: VC: 5: Total Requests: 0.
1712653384: VC: 5:
1712653384: VC: 5: NO ANSWER from the Virus Checker Servers: 0.
1712653384: VC: 5: ERROR_SETUP: 0.
1712653384: VC: 5: FAIL: 0.
1712653384: VC: 5: TIMEOUT: 0.
1712653384: VC: 5:
1712653384: VC: 5: 0 files in the collector queue.
1712653384: VC: 5: 0 files processed by the AV threads.
Command succeeded

2. 下載 viruschecker.config 檔案，並確認是否顯示 shutdown=no 或 shutdown=viruscheck：

開啟 Unity UI>儲存 > 裝置 NAS 伺服器 >安全性>防毒 >軟體 擷取目前組態 （檢視檔案）  

3. 更新 viruschecker.conf 值 （上傳新組態），並套用變更：

# Example: OV-xxx-x-xxx-xx-001
#
masks=*.EXE:*.COM:*.DOC:*.DOT:*.XL?:*.MD?:*.VXD:*.386:*.SYS:*.BIN:*.ppt:*docx:*.rar:*.zip:*.txt
excl=pagefile.sys:*.tmp
# masks=*.RTF:*.OBD:*.DLL:*.SCR:*.OBT:*.PP?:*.POT:*.OLE:*.SHS:*.MPP
# masks=*.MPT:*.XTP:*.XLB:*.CMD:*.OVL:*.DEV
# masks=*.ZIP:*.TAR:*.ARJ:*.ARC:*.Z
addr=172.xx.xx.xx >> AV Server IP address
shutdown=no (update the value to shutdown=viruschecking and upload the viruschecker.conf file to unity GUI)
# Stops SMB/CIFS if no AV machine available.(No Windows clients can access any Unity share)

08:18:51 root@DE414234378xxx spa:/cores/service/user# svc_cava OV-xxx-x-xxx-xx-001
OV-xxx-x-xxx-xx-001: commands processed: 1
command(s) succeeded
output is complete
1712650760: VC: 5: OV-xxx-x-xxx-xx-001: Enabled and Started.
1712650760: VC: 5: 1 Checker IP Address(es):
1712650760: VC: 5: 172.xx.xx.xx                                   ONLINE at Tue Apr  9 08:19:14 2024 (GMT-00:00)
1712650760: VC: 5:                                                HTTP, CAVA version: 8.9.10.0
1712650760: VC: 5:                                                AV Engine: Microsoft Antivirus ( Third party AV Engine )
1712650760: VC: 5:                                                Remediation Window: 30 seconds
1712650760: VC: 5:                                                Server Name: 172.xx.xx.xx
1712650760: VC: 5:                                                Last time signature updated: Tue Apr  9 05:29:36 2024 (GMT-00:00)
1712650760: VC: 5:
1712650760: VC: 5: 15 File Mask(s):
1712650760: VC: 5: *.EXE *.COM *.DOC *.DOT *.XL? *.MD? *.VXD *.386 *.SYS *.BIN *.PPT *DOCX *.RAR
1712650760: VC: 5: *.ZIP *.TXT
1712650760: VC: 5: 2 Excluded File(s):
1712650760: VC: 5: PAGEFILE.SYS *.TMP
1712650760: VC: 5: Share \\ov-yml-p-ser-fs-001.yoma.com.mm\CHECK$.
1712650760: VC: 5: RPC request timeout=25000 milliseconds.
1712650760: VC: 5: RPC retry timeout=5000 milliseconds.
1712650760: VC: 5: High water mark=200.
1712650760: VC: 5: Low water mark=50.
1712650760: VC: 5: Scan all virus checkers every 10 seconds.
1712650760: VC: 5: When all virus checkers are offline:
1712650760: VC: 5: Continue to work with Virus Checking and CIFS.
1712650760: VC: 5: Scan on read disable.
1712650760: VC: 5: MS-RPC User: OV-xxx-x-xxx-xx-001-FS$
1712650760: VC: 5: MS-RPC ClientName: ov-xxx-x-xxx-xx-001.abc
 Command succeeded

1. 確認 viruschecker.conf 設定。（關閉 = 病毒檢查）
2. 確認 CAVA 服務正在使用 AV 使用者帳戶執行。
3. 確認已安裝的防毒軟體 （Sophos、TrendMicro、McAfee 等） 服務正在使用本機系統帳戶執行。
4. 確認 AV 使用者是每個 AV 伺服器上本地管理員組的成員。
5. 確認防毒軟體和 CEE 的安裝順序正確，先是 CEE，然後安裝防毒
6. 將 CAVA 服務重新開機
7. 重新啟動 AV 伺服器一次
8. 確認 CAVA 伺服器只有一個網路介面。
9. 向使用者確認是否為用戶端電腦分配了相同或不同的 NAS 伺服器網路 IP（始終建議它位於同一網路中）

1712650760: VC: 5:                                                HTTP, CAVA version: 8.9.10.0
1712650760: VC: 5:                                                AV Engine: Microsoft Antivirus ( Third party AV Engine )

1. 請勿設定原則 VirusChecking=No，因為這可能會導致封鎖的執行緒，且不被視為最佳實務。
2. 請勿使用單個 AV 伺服器，因為不建議這樣做。
3. 請勿將單個 AV 伺服器用於多個平臺，因為不建議這樣做，應將其視為不受支援。

如果問題仍然存在，使用者必須聯絡第三方防毒廠商支援，以取得進一步協助。

• 關閉 Windows 安全性中的 Defender 防毒保護
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