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Windows 電腦想裝免費防火牆,Comodo Firewall 夠用嗎

Comodo Firewall 軟體圖示 Comodo Firewall 10.0.2.6420 資料更新 2017-11-24 閱讀約 5 分鐘

電腦剛重灌好,或是新買的 Windows 筆電開機後,系統只靠內建的防火牆撐著,心裡總覺得不太踏實。尤其常需要下載檔案、連公用 Wi-Fi,或偶爾會開一些來路不明的程式,很怕一個不小心就讓惡意軟體鑽進來。想找一套免費的防火牆軟體,但又怕裝了以後整天跳通知、設定複雜到看不懂,反而比沒裝更麻煩。

很多人第一個念頭是裝免費防毒軟體,但防毒主要管的是「已知」的病毒,遇到沒看過的檔案常常反應不過來。也有人想說 Windows 內建防火牆加減用,但它的記錄和控管功能陽春,根本看不出有哪些程式在偷偷連網路。獨立防火牆的切入點是「預設拒絕」——除了你允許的程式,其他的一律擋下,不靠病毒碼比對,而是從源頭把可疑的東西隔離在外。

Comodo Firewall 操作介面
Comodo Firewall 的操作介面

01Comodo Firewall 跟一般防毒軟體有什麼不同?

防毒軟體靠病毒碼資料庫比對檔案,遇到沒收錄的新型惡意軟體容易漏掉。Comodo Firewall 的核心是「預設拒絕」,任何不在信任清單裡的程式,預設都不能執行或連線。它另外有雲端掃描和行為分析,遇到沒看過的檔案會先丟到沙盒裡跑,確認沒問題才放行,做法跟傳統防毒不太一樣。

02它能不能擋住駭客從外面連進我的電腦?

可以。它內建封包過濾防火牆,會監控所有進來的網路連線,阻止外部裝置主動連到你的電腦。預設狀態下,沒有經過你允許的連線都會被擋掉,這部分對一般使用者來說是開機就生效,不需要特別設定。

03遇到沒看過的程式,它會怎麼處理?

當一個不在信任清單裡的程式想執行,它會先對照內建的白名單,裡面有超過 1500 萬個已知的安全檔案。如果不在名單上,就會觸發雲端掃描,同時把程式放進沙盒裡執行。沙盒裡跑的程式碰不到你系統裡真正的資料,所以就算有問題也不會造成傷害。

Comodo Firewall 介面畫面 2
Comodo Firewall 介面畫面

04裝了以後會不會一直跳通知打擾我?

官方說法是在預設設定下,未知的檔案會自動送去雲端掃描,然後在沙盒裡跑,所以不會一直跳視窗問你「要不要允許」。但實際使用上,如果常裝新軟體或某些程式行為比較特別,還是可能出現提示。這些通知的頻率可以進設定調整,只是對不熟的人來說可能要花點時間找選項。

05它的操作介面好上手嗎?

介面是英文的,官方號稱「連初學者都能改設定」,但實際上有使用者反映介面不夠直覺,要找到特定功能得翻一下選單。如果你看得懂英文、願意花點時間摸索,基本防護功能開機就能用;但想調整進階規則,對新手來說確實有門檻。

06這套軟體適合什麼樣的人用?

適合不想花錢、又希望電腦有基本防火牆保護的 Windows 使用者。特別是常下載免費軟體、會開不明檔案的人,它的沙盒功能可以多一層保險。另外,喜歡自己掌控規則的進階使用者,它提供很多可自訂的選項,可以玩得很細。

Comodo Firewall 介面畫面 3
Comodo Firewall 介面畫面

07電腦比較舊、效能不好的人適合裝嗎?

要考慮一下。官方資料和用戶回饋都提到,它某些進階功能(尤其是沙盒)比較吃資源,在老電腦或低規格機器上可能明顯變慢。如果你的電腦本來就跑得喘,裝了以後開機和執行程式可能會更卡,建議先確認硬體能不能負擔。

08什麼情況下不建議選這套軟體?

如果你的需求只是「裝了以後什麼都不要問我」,那它可能不適合。它本質上還是會對未知程式做判斷和提示,而且介面只有英文,看不懂的話出問題會很難處理。另外,如果你已經裝了 Comodo Internet Security 這類整套安全軟體,就不需要再裝單獨的防火牆,功能會重疊。

09它跟 Comodo 自家的其他安全軟體有什麼關係?

Comodo 還有出 Internet Security、Cloud Antivirus、Cleaning Essentials 等產品,評分人數都在 280 人上下。Firewall 是單獨的防火牆模組,Internet Security 則是把防毒和防火牆包在一起。如果你只需要防火牆,裝這個就好;想要整套防護,可以考慮後者,但功能有重疊,不要同時裝。

Comodo Firewall 介面畫面 4
Comodo Firewall 介面畫面

10這套軟體還有人在維護更新嗎?

從版本紀錄來看,它收錄了 34 個版本,最近一次更新在 2025 年 11 月,近 24 個月內有更新紀錄,代表開發商還在持續維護。不過更新頻率不算高,一年大約一次,如果你期待很頻繁的版本更新,可能要調整一下預期。

11它的免費版會不會缺東缺西?

官方強調這套防火牆「終身免費」,免費版就有完整的防火牆、沙盒和雲端掃描功能。但要注意的是,免費版沒有付費方案那樣的客服支援,出問題主要靠社群論壇或自己查資料。另外,介面只有英文,對不習慣英文介面的人來說,這本身就是一種使用門檻。

12跟其他免費防火牆比起來,它的評價如何?

在收錄的資料中,它的使用者評分是 7.02/10,共 277 人評分,跟 SpyShelter Firewall 的評分人數相同。這個分數不算特別突出,但也不算差。評分人數不算多,參考價值有限,建議實際裝來跑一陣子,看它在你電腦上的表現再決定去留。

下載與官方連結

前往官方網站 下載 Comodo Firewall

cmd_fw_installer.exe · 連結指向軟體原廠

版本紀錄

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看完整版本清單

這一版改了什麼

What's new in this version:

Comodo Firewall 10.0.2.6420
- Change log not available for this version

Comodo Firewall 10.0.2.6408
- Change log not available for this version

Comodo Firewall 10.0.2.6396
Fix:
- We have been reviewing Windows preview builds and came across crash in Edge browser in one of Insider Preview builds as pointed here. These changes in Windows 10 could go into RS3 release, which could happen any time mid September, 2017 onwards
- Crash in Excel in certain scenarios as reported here

Changes:
- If CIS is updated, it will also update Internet Security Essentials(ISE) to latest v94 in case installed in system
- When you install CIS afresh, Secure Shopping section in it will not have default websites list. You can always configure a new website and will be alerted. At the moment we do not have remember choice option in those alerts and thus was inconvenient

Comodo Firewall 10.0.1.6294
- Change log not available for this version

Comodo Firewall 10.0.1.6258
Fixes:
- Stability fixes with respect to HTTPS browsing in Edge browser
- Even though you had latest v6254, you still had seen updates for iseupdate, it should not happen now
- Reported cmdagent crash is fixed

Changes:
- Geek Buddy product is not selected by default for installation in Components section. Geek Buddy will be removed completely from CIS package in next release

Comodo Firewall 10.0.1.6254
Fixes:
- Incompatibility with Microsoft Update KB4022716 (OS Build 15063.447)
- Multiple entries related to cmdagent in error section of Windows Events as posted here
- Invalid entry in "Blocked by" column in Unblock application window as posted here

New:
- Additional http fallback entry in update URL for Windows 7. In addition to https, you will see 2nd http entry for download.comodo.com.
- We have also released recognizer v1.6.2.27 as tested here in production in alert mode

Comodo Firewall 10.0.1.6246
- Change log not available for this version

Comodo Firewall 10.0.1.6223
Fixes:
- Comodo Security Agent could not be started
- Comodo Application shortcuts could not be deleted, renamed or moved
- IP4 and IP6 entry names could be distorted
- Some of Windows XP PCs could not download updates
- Cygwin fails at post-install scripts and apps like Dash, Bash become unresponsive / consume abnormal CPU usage
- In Containment settings, checkbox 'Do not show privilege elevation alert' was selected after clean install, it should have been de-selected by default
- Some users reported that Windows firewall was disabled even though they installed Comodo Antivirus rather Comodo Firewall
- File Lookup Service(FLS) could fail in some cases
- Trusted vendor list could see reduced list of entries for CIS versions older than v10 in last major update

New:
- “Pseudo File Downloaders” file group has been updated with additional entries for: *cmd.exe | *.bat | *.cmd for enhanced security. This file group is referenced in 3rd "Run Virtually" rule set

Comodo Firewall 10.0.1.6209
New:
We now have a new tab "Advanced Protection" under "Advanced Settings" where:
- a - "Virus Scope" and "Secure Shopping": These used to be separate tabs are now part of this "Advanced Protection" section.
- b - "Miscellaneous": From HIPS Settings, we have moved 4 settings and made part of this section. "Heuristic Command Line Analysis" and "Embedded Code Detection" are integrated under one interface as "Do Heurristic Command Line Analysis". So embedded code detection is expanded in that interface and connected with related parsers. Also we have moved "shell code injection detection" and "browser configuration modification" settings under this section.
- Comodo Secure DNS is back in installation offering now

Changes:
- You will see word "Sandbox" is now replaced with word "Containment" across whole GUI as that is easier to understand by layman while Sandbox has been more technical.

Improved:
- Support of Python interpreter in heuristic command line analysis

Fixed:
- All GUI issues experienced with upcoming Windows 10 RedStone-2 / Creators Update are fixed in this release.
- Main focus of CIS v10 has been to make it more stable and bug free and as part of that aim, hundreds of bugs are fixed, below are few particular fixes:
- BSOD after launched Opera in Sandbox
- Critical bypasses of Sanbdox
- Keyboard can be intercepted in Virtual Desktop
- Several apps crash caused by guard32/64.dll
- PowerShell scripts are not sandboxed
- Missed fileless malware cases

Comodo Firewall 10.0.0.6092
- Change log not available for this version

Comodo Firewall 10.0.0.6086
New:
Brand New User Interface Themes:
- Simplicity and usability are the focus of Arcadia and Lycia themes

Firewall Advanced:
- Comodo Firewall lovers here ! Comodo provides you the option to use Unlimited Live Expert Virus Removal with Firewall Advanced package including Geekbuddy 7/24 live help service

Unblock Applications:
- Ever tried to run a program only to find your security software is blocking it - then can't figure out what you need to do to get it running? Our new ‘unblock applications’ feature allows you to release applications with a single click from whatever security component has blocked them.

Improved:
- Wordings, icons, navigation, consistency, usability
- Internal improvements to file hash tracking
- Internal improvements to file rating system
- Various bug fixes and tweaks

Comodo Firewall 8.4.0.5165
- Change log not available for this version

Comodo Firewall 8.4.0.5076
- Change log not available for this version

Comodo Firewall 8.4.0.5068
- Change log not available for this version

Comodo Firewall 8.2.0.5027
- Change log not available for this version