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Bug #13940

closed

Firewall log parser does not handle SCTP log entries

Added by Marcos M over 2 years ago. Updated almost 2 years ago.

Status:
Resolved
Priority:
Normal
Assignee:
Jim Pingle
Category:
System Logs
Target version:
2.7.0
Start date:
Due date:
% Done:

100%

Estimated time:
Plus Target Version:
23.09
Release Notes:
Default
Affected Version:
2.6.0
Affected Architecture:

Description

Tested in 22.05 / 23.01.

The firewall logs page in the webGUI does not show the following entries in /var/log/filter.log:

Feb  6 12:27:26 pfs-firewall-1 filterlog[24979]: 213,,,1663257066,vtnet8,match,block,in,4,0xa0,,254,17063,0,none,132,sctp,60,198.51.100.131,192.0.2.110,datalength=40

Files

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clipboard-202306121058-vs7st.png (54.6 KB) clipboard-202306121058-vs7st.png Jim Pingle, 06/12/2023 02:58 PM
clipboard-202306121101-x7fpj.png (36 KB) clipboard-202306121101-x7fpj.png Jim Pingle, 06/12/2023 03:01 PM

Related issues

Related to Feature #14667: Improve SCTP support in ``filterlog``ResolvedKristof Provost

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 #1

Updated by Jim Pingle over 2 years ago

  • Subject changed from webGUI Firewall Logs do not show SCTP entries to Firewall log parser does not handle SCTP log entries
  • Category changed from Web Interface to System Logs
  • Target version set to 2.7.0
  • Plus Target Version set to 23.05

The protocol layout isn't defined in the log parser so it doesn't know what to do with it. There is no test for protocol 132 in the block at source:src/etc/inc/syslog.inc#L1101 in parse_firewall_log_line()

There could maybe be a default test at the end to catch unknown protocols, like the IGMP section could be moved down and the protocol check removed from that, so unknown protocols just show source/destination address and no other data.

While there, that whole block should really be a switch statement and not a bunch of if/elseif checks.

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 #3

Updated by Jim Pingle over 2 years ago

  • Status changed from New to Pull Request Review
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 #4

Updated by Jim Pingle about 2 years ago

  • Plus Target Version changed from 23.05 to 23.09
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 #5

Updated by Jim Pingle almost 2 years ago

  • Assignee set to Jim Pingle
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 #6

Updated by Jim Pingle almost 2 years ago

  • Status changed from Pull Request Review to Feedback
  • % Done changed from 0 to 100

PR merged

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 #7

Updated by Jim Pingle almost 2 years ago

Seems to be working OK. Logs are showing not only SCTP but also some other entries that were not previously parsed.

Not sure if we want to keep these in the (visible GUI) log or suppress them, but that can be left up to another Redmine request:

The GUI is accurately displaying what is in the filter.log file for those lines, so it's also possible something in filterlog needs adjusted for those entries. Either way it's outside the scope of this issue.

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 #8

Updated by Jim Pingle almost 2 years ago

  • Related to Feature #14667: Improve SCTP support in ``filterlog`` added
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