10 - Block attacker IP with express

Refer to express code to get attacker IP, req.socket.remoteAddress === '127.0.0.1'
The code cannot work as the actual value of req.socket.remoteAddress I get is :ffff:127.0.0.1.
I can process it to remove :ffff:. Anyone encounter this issue?
Comments
-
Just for local test, use the result when you request "req.socket.remoteAddress", use this value as a string and that's it.
in your case you are getting the ipv6 and the ipv4 "ffff:127.0.0.1" , in real world you could receive an array of ips in other ways. but this is just an exercise to evaluate.
0 -
Yes. I process "ffff:127.0.0.1" to remove ":ffff:".
So you mean I get ":ffff:" because of localhost?
In real production env, I will get a array of ip without ":ffff:" ?0 -
yeah exactly - if your system is setup slightly different you may get an ipv4 inside an ipv6 address. It doesn't matter, the principle is the same.
0 -
same issue here and i fixed like this:
app.use(function (req, res, next) { const ipList = req.socket.remoteAddress.split(':') if (ipList.includes('127.0.0.1')) { const err = new Error('Forbidden'); err.status = 403; next(err); return; } next(); });
0 -
@jhonny111s nice
0
Categories
- All Categories
- 158 LFX Mentorship
- 158 LFX Mentorship: Linux Kernel
- 841 Linux Foundation IT Professional Programs
- 384 Cloud Engineer IT Professional Program
- 185 Advanced Cloud Engineer IT Professional Program
- 87 DevOps Engineer IT Professional Program
- 154 Cloud Native Developer IT Professional Program
- 151 Express Training Courses & Microlearning
- 149 Express Courses - Discussion Forum
- 2 Microlearning - Discussion Forum
- 7K Training Courses
- 49 LFC110 Class Forum - Discontinued
- 74 LFC131 Class Forum
- 56 LFD102 Class Forum
- 251 LFD103 Class Forum
- 26 LFD110 Class Forum
- 49 LFD121 Class Forum
- 2 LFD123 Class Forum
- 1 LFD125 Class Forum
- 19 LFD133 Class Forum
- 10 LFD134 Class Forum
- 19 LFD137 Class Forum
- 1 LFD140 Class Forum
- 73 LFD201 Class Forum
- 8 LFD210 Class Forum
- 6 LFD210-CN Class Forum
- 2 LFD213 Class Forum - Discontinued
- 128 LFD232 Class Forum - Discontinued
- 3 LFD233 Class Forum
- 5 LFD237 Class Forum
- 25 LFD254 Class Forum
- 735 LFD259 Class Forum
- 111 LFD272 Class Forum - Discontinued
- 4 LFD272-JP クラス フォーラム - Discontinued
- 16 LFD273 Class Forum
- 398 LFS101 Class Forum
- 3 LFS111 Class Forum
- 4 LFS112 Class Forum
- 5 LFS116 Class Forum
- 9 LFS118 Class Forum
- 2 LFS120 Class Forum
- 11 LFS142 Class Forum
- 9 LFS144 Class Forum
- 5 LFS145 Class Forum
- 6 LFS146 Class Forum
- 6 LFS147 Class Forum
- 20 LFS148 Class Forum
- 17 LFS151 Class Forum
- 6 LFS157 Class Forum
- 83 LFS158 Class Forum
- 1 LFS158-JP クラス フォーラム
- 13 LFS162 Class Forum
- 2 LFS166 Class Forum - Discontinued
- 8 LFS167 Class Forum
- 4 LFS170 Class Forum
- 2 LFS171 Class Forum - Discontinued
- 4 LFS178 Class Forum - Discontinued
- 4 LFS180 Class Forum
- 3 LFS182 Class Forum
- 7 LFS183 Class Forum
- 1 LFS184 Class Forum
- 37 LFS200 Class Forum
- 737 LFS201 Class Forum - Discontinued
- 3 LFS201-JP クラス フォーラム - Discontinued
- 22 LFS203 Class Forum
- 141 LFS207 Class Forum
- 3 LFS207-DE-Klassenforum
- 3 LFS207-JP クラス フォーラム
- 302 LFS211 Class Forum - Discontinued
- 56 LFS216 Class Forum - Discontinued
- 60 LFS241 Class Forum
- 51 LFS242 Class Forum
- 39 LFS243 Class Forum
- 17 LFS244 Class Forum
- 8 LFS245 Class Forum
- 1 LFS246 Class Forum
- 1 LFS248 Class Forum
- 120 LFS250 Class Forum
- 3 LFS250-JP クラス フォーラム
- 2 LFS251 Class Forum
- 162 LFS253 Class Forum
- 1 LFS254 Class Forum - Discontinued
- 3 LFS255 Class Forum
- 15 LFS256 Class Forum
- 2 LFS257 Class Forum
- 1.3K LFS258 Class Forum
- 12 LFS258-JP クラス フォーラム
- 139 LFS260 Class Forum
- 165 LFS261 Class Forum
- 44 LFS262 Class Forum
- 82 LFS263 Class Forum - Discontinued
- 15 LFS264 Class Forum - Discontinued
- 11 LFS266 Class Forum - Discontinued
- 25 LFS267 Class Forum
- 27 LFS268 Class Forum
- 38 LFS269 Class Forum
- 11 LFS270 Class Forum
- 202 LFS272 Class Forum - Discontinued
- 2 LFS272-JP クラス フォーラム - Discontinued
- 2 LFS274 Class Forum - Discontinued
- 4 LFS281 Class Forum - Discontinued
- 30 LFW111 Class Forum
- 263 LFW211 Class Forum
- 187 LFW212 Class Forum
- 16 SKF100 Class Forum
- 2 SKF200 Class Forum
- 3 SKF201 Class Forum
- 800 Hardware
- 200 Drivers
- 68 I/O Devices
- 37 Monitors
- 104 Multimedia
- 175 Networking
- 92 Printers & Scanners
- 85 Storage
- 765 Linux Distributions
- 82 Debian
- 67 Fedora
- 20 Linux Mint
- 13 Mageia
- 23 openSUSE
- 149 Red Hat Enterprise
- 31 Slackware
- 13 SUSE Enterprise
- 356 Ubuntu
- 472 Linux System Administration
- 39 Cloud Computing
- 71 Command Line/Scripting
- Github systems admin projects
- 96 Linux Security
- 78 Network Management
- 102 System Management
- 48 Web Management
- 72 Mobile Computing
- 19 Android
- 40 Development
- 1.2K New to Linux
- 1K Getting Started with Linux
- 385 Off Topic
- 118 Introductions
- 178 Small Talk
- 28 Study Material
- 814 Programming and Development
- 307 Kernel Development
- 489 Software Development
- 1.8K Software
- 264 Applications
- 183 Command Line
- 4 Compiling/Installing
- 988 Games
- 317 Installation
- 107 All In Program
- 107 All In Forum
Upcoming Training
-
August 20, 2018
Kubernetes Administration (LFS458)
-
August 20, 2018
Linux System Administration (LFS301)
-
August 27, 2018
Open Source Virtualization (LFS462)
-
August 27, 2018
Linux Kernel Debugging and Security (LFD440)