407 Proxy Authentication Error: Privilege Authentication Solution

What the hell is wrong with this damn 407 error?

Recently, a lot of friends came to ask, when using proxy ip suddenly popped up a407 Agent Authentication ErrorThe first thing you need to do is to go to the supermarket and forget your membership card and get stuck in the doorway. In fact, to put it bluntly is that the server did not recognize your identity, the common situation is like: 1. account password wrong 2. IP is not in the allowed list 3. authentication protocol is not the right way.

To cite a real scenario: the old king with ipipgo's proxy service to grab the data, Ming account to the notepad copied three times, or pop 407. later found to beIP whitelisting is not turned on for automatic updatesThe team used a dynamic IP pool and the server only recognized the initial IP. in this case you should use ipipgo'sDynamic IP Whitelist Synchronization, saving manual updates.

Three tips to put out a fire quickly

The first axe: check the account number do not be confused
First check the account password is not copied more spaces, especially from the web page directly copy easily with the This invisible symbol. It is recommended to use the code to output the account information directly for verification:

import requests
proxy = "username:password@gateway.ipipgo.com:9021"
print(f "Current account: {proxy.split('@')[0]}")

The second axe: whitelisting to drive an automatic gear
Many project teams fall at this step:
1. Local IP has changed without updating the whitelist.
2. 服务器防火拦截海外IP
It is recommended to turn on the ipipgo consoleDynamic IP Binding, their system will automatically synchronize the latest export IP.

Axe No. 3: Wasted effort with the wrong agreement
Different authentication protocols are used for different scenarios, and getting it wrong is like using a bus card to swipe a subway gate. Here's a quick checklist:

| Application Scenarios | Recommended Protocols | ipipgo Corresponding Ports |
| ----------------|----------------|----------------|----------------|
| Data Collection | SOCKS5 Authentication | 9018-9022 |
| Automated Testing | HTTPS Tunneling | 9030-9040 |
| High Frequency Access | Private Encryption Protocol | 9100 Series |

Guidelines for demining common pitfalls

QA 1: What is the error report even though the configuration is correct?
Check if the timestamps are synchronized, servers more than 5 minutes apart will fail authentication. Use ipipgo'sTime Calibration ServiceCan automatically align time zones.

QA 2: What's wrong if I can't use it all of a sudden?
It could be triggering a wind control strategy, for example:
- 50+ requests launched in 1 second
- Mixed use of multiple accounts with the same IP
It is recommended to enable it in the ipipgo backendIntelligent QPS regulation, automatically matching the pace of business.

QA 3: What should I do if I can't connect to overseas nodes?
Prefer ipipgo'sBGP hybrid lineThis kind of route will automatically select the optimal path. Don't use the ones with single lane access, especially in the evening rush hour when it is easy to get stuck in traffic.

Upgraded error-proof posture

Add to the codeDual authentication mechanism, it's like putting two locks on the door of a room:

def get_proxy().
    try.
         Prefer private encryption protocol
        proxy = get_ipipgo_proxy(type='vip')
    except AuthError.
         Alternative standard protocol
        proxy = get_ipipgo_proxy(type='standard')
    return proxy

Enterprise support for ipipgoIntelligent Route SwitchingWhen the main line authentication is abnormal, it automatically cuts to the backup channel within 0.3 seconds, which is more than 10 times faster than manual switching.

Let's get real.

Don't be quick to scold your service provider when you encounter a 407 error, follow this process first:
1. Paste the account number and password into a notepad to check it.
2. Go to the console to see the IP whitelisting status.
3. Testing of different protocol ports
If you can't figure it out, go straight to ipipgo tech support, their7×24 online responseIt's not a setup. The last time I raised a work order at 3am, customer service resolved it in two minutes, with optimization suggestions.

Lastly, I would like to say: don't use those free proxies for cheap, 407 error is small, data leakage is big. Professional things to ipipgo this kind of specialized agent services, worry not to say that is also safe, out of the problem at least have technical backing.