IPQ BDB filter - Bugs: bug #56447, Verdict repetition

Group

Main
- Main
- View members
- Search
Homepage
Download
Support
- Submit new
- Browse
- Reset to open
- Digest
- Dependencies
- ~~Export~~
- Get statistics
- Search
Mailing lists
Source code
Bugs
- Submit new
- Browse
- Reset to open
- Digest
- Dependencies
- ~~Export~~
- Get statistics
- Search
Tasks
- ~~Submit new~~
- Browse
- Reset to open
- Digest
- Dependencies
- ~~Export~~
- Get statistics
- Search
News
- Browse
- Atom feed
- ~~Submit~~
- ~~Manage~~

bug #56447: Verdict repetition

Submitter:	Alessandro Vesely <ale2003>
Submitted:	Thu 06 Jun 2019 07:54:59 AM UTC


Category:	None	Severity:	3 - Normal
Item Group:	None	Status:	Fixed
Privacy:	Public	Assigned to:	ale2003
Open/Closed:	Closed

* Mandatory Fields

Add a New Comment Rich Markup

Thu 06 Jun 2019 12:00:14 PM UTC, comment #1:

v. 1.05

Alessandro Vesely <ale2003>

Thu 06 Jun 2019 07:54:59 AM UTC, original submission:

For consistency, ibd-judge reiterates an NF_DROP judgment for IPQBDB_RECENT_DROP_TIME seconds, without tossing. That behavior was provided to defeat automatic retries. However, it turns out it can have nasty consequences if the remote host never gives up.

What happened: a user flunked login one year ago. Even with a low probability (0.41%) the connection happened to be dropped. Connection attempts went on at 17000+ times per second, totaling 90000+ times at the end of day.

The solution consists of a 32-bit counter to enforce a maximum of repetition without toss.

Alessandro Vesely <ale2003>

(Note: upload size limit is set to 16384 kB, after insertion of the required escape characters.)

Attach Files:


Comment:

No files currently attached

Depends on the following items: None found

Items that depend on this one: None found

Carbon-Copy List

-email is unavailable- added by ale2003 (Submitted the item)

There are 0 votes so far. Votes easily highlight which items people would like to see resolved in priority, independently of the priority of the item set by tracker managers.

Only logged-in users can vote.

Please enter the title of George Orwell's famous dystopian book (it's a date):

Follow 2 latest changes.

Date	Changed by	Updated Field	Previous Value	=>	Replaced by
2019-06-06	ale2003	Status	In Progress		Fixed
		Open/Closed	Open		Closed

IPQ BDB filter - Bugs: bug #56447, Verdict repetition

bug #56447: Verdict repetition

<a href="#postcomment">Post a Comment</a>

<a href="#discussion">Discussion</a>

<a href="#attached">Attached Files</a>

<a href="#dependencies">Dependencies</a>

<a href="#cc">Mail Notification Carbon-Copy List</a>

<a href="#votes">Votes</a>

<a href="#history">History</a>