I am a bit confused about syslog message format. I have to write a program that parses syslog messages. When I read what I get in my syslog-ng instance I get messages like this:
Jan 12 06:30:00 1.2.3.4 apache_server: 1.2.3.4 - - [12/Jan/2011:06:29:59 +0100] "GET /foo/bar.html HTTP/1.1" 301 96 "-" "Mozilla/5.0 (Windows; U; Windows NT 5.1; fr; rv:1.9.2.12) Gecko/20101026 Firefox/3.6.12 ( .NET CLR 3.5.30729)" PID 18904 Time Taken 0
I can clearly determine the real message (which is, in this case an Apache access log message) The rest is metadata about the syslog message itself.
However when I read the RFC 5424 the message examples look like:
without structured data
<34>1 2003-10-11T22:14:15.003Z mymachine.example.com su - ID47 - BOM'su root' failed for lonvick on /dev/pts/8
or with structured data
<165>1 2003-10-11T22:14:15.003Z mymachine.example.com evntslog - ID47 [exampleSDID#32473 iut="3" eventSource="Application" eventID="1011"] BOMAn application event log entry...
So now I am a bit confused. What is the correct syslog message format ? It is a matter of spec version where RFC 5424 obsoleted RFC 3164 ?
The problem in this case is that apache is logging via the standard syslog(3) or via logger. This only supports the old (RFC3164) syslog format, i.e. there is no structured data here.
In order to have the fields from the apache log show up as RFC5424 structured data, apache would need to format the log that way.
The first example is not proper RFC3164 syslog, because the priority value is stripped from the header. Proper RFC3164 format would look like this:
<34>Jan 12 06:30:00 1.2.3.4 apache_server: 1.2.3.4 - - [12/Jan/2011:06:29:59 +0100] "GET /foo/bar.html HTTP/1.1" 301 96 "-" "Mozilla/5.0 (Windows; U; Windows NT 5.1; fr; rv:1.9.2.12) Gecko/20101026 Firefox/3.6.12 ( .NET CLR 3.5.30729)" PID 18904 Time Taken 0
Traditionally rfc3164 syslog messages are saved to files with the priority value removed.
The other two are in RFC5424 format.
If you have access to the installed syslog-daemon on the system you could configure it to write the logs (received both locally or via network) in a different format. rsyslogd for instance allows to configure your own format (just write a template) and also if I remember correctly has a built-in template to store in json format. And there are libraries in almost any language to parse json.
EDIT: You could also make rsyslogd part of your program. rsyslog is very good in reading incoming syslogs in either of the two RFC formats. You can then use rsyslog to output the message in JSON. This way rsyslog does all the decompositioning of the message for you.
Related
I'm trying to setup monitoring (http-ecv) with authorization header, but I'm getting illegal character or header folding error (jetty 9.3)
1. example
GET /somepath/somepage.html HTTP/1.1
Server Running
\r\nAuthorization: Basic somestring=\r\n
Response "HTTP1.1 400 Illegal character SPACE=''\r\n"
2. example
GET /somepath/somepage.html
Server Running
HTTP/1.1\r\nAuthorization: Basic somestring=\r\n
Response HTTP/1.1 400 Illegal character VCHAR='/'\r\n
This example was working on older jetty version
3.example
GET /somepath/somepage.html
Server Running
\r\nHTTP/1.1\r\nAuthorization: Basic somestring=\r\n
Response HTTP1.1 400 Header Folding\r\n
Any ideas?
try the solution on the article https://support.citrix.com/article/CTX117142
edit to add more context: the article describes how to create a monitor for a back end server that requests basic authentication with a user name and password.
Summarized:
add lb monitor test_login_tcp TCP-ECV -send "GET / HTTP/1.1\r\nAuthorization: Basic YOURBASE64USERPW\r\nHost: IP_or_FQDN\r\n\r\n" -recv 200 -LRTM ENABLED
I am using robotframework and I would like know what can I do so that I can avoid going through the proxy? I am using Windows and I have made sure there are no proxy variables in environment variables. I am also connected via WI-FI unlike others who are on LAN for who do not see issue with the GET request.
KEYWORD ${resp} = RequestsLibrary . Get Request session, /token, params=${user info}, headers=${HEADER}
Documentation:
Send a GET request on the session object found using the
Start / End / Elapsed: 20180102 13:17:11.558 / 20180102 13:18:26.569 / 00:01:15.011
13:17:11.566 DEBUG Starting new HTTP connection (1): proxy-sanfran
13:17:11.577 DEBUG http://proxy-sanfran:80 "GET http://localhost:9000/token?userName=test_user&password=test123 HTTP/1.1" 301 None
13:17:11.586 DEBUG Resetting dropped connection: proxy-sanfran
13:18:26.566 DEBUG http://proxy-sanfran:80 "GET http://10.138.37.40 HTTP/1.1" 503 787
13:18:26.568 INFO Get Request using : alias=session, uri=/token, headers={'Content-Type': 'application/json'} json=None
13:18:26.568 INFO ${resp} = <Response [503]>
try with setting environment variable
NO_PROXY = "localhost"
I've just started working with the Quectel MC60 and I am having some issues:
About HTTP GET method, I make the following commands:
AT+QIFGCNT=0
AT+QICSGP=1,"my_apn"
AT+QIREGAPP
AT+QIACT
AT+QSSLCFG="https",1
AT+QHTTPURL=39,40
my_url_39_bytes_long
AT+QHTTPGET=60
AT+QHTTPREAD=30
AT+QIDEACT
When using the QCOM software, I make a script running all the above commands sequentially. When it comes to the AT+QHTTPREAD command, the response is always "+CME ERROR: 3822" (HTTP response failed). What can it be? I'm sure the HTTP server is working properly.
The answer is that it is necessary to configure the request header
AT+QIFGCNT=0
AT+QICSGP=1,"my_apn"
AT+QIREGAPP
AT+QIACT
AT+QHTTPURL=39,40
my_url_39_bytes_long
AT+QHTTPCFG="requestheader",1
AT+QHTTPPOST=77
GET path HTTP/1.1
User-Agent: Fiddler
Host: www.my_host.com
AT+QHTTPREAD=30
AT+QIDEACT
NOTE: in AT+HTTPPOST=77, 77 is the size of the POST message (last two \r\n are required and count)
NOTE2: after GET you're supposed to write the path to the url inserted in AT+QHTTPURL. For example, if you specified your URL as https://www.my_host.com/debug/main/port, your AT+HTTPPOST request should look like this (don't forget the last two \r\n):
GET /debug/main/port HTTP/1.1
User-Agent: Fiddler
Host: www.my_host.com
I am using wso2 esb-4.8.1.
I have read about http_ access logs blog but I have small consult like how we can customize the pattern.
Using below line in log4j.properties file I am getting Http,NHttp transports access logs.
log4j.logger.org.apache.synapse.transport.http.access=INFO
Using this property I am getting Http,NHttp transport logs like below.
- 127.0.0.1 - [27/Jan/2015:14:59:54 +0330] "- - " 202 - "-" "-"
But I wish log the values in below format.
%{yyyy-MM-dd HH:mm:ss}t %m %U %T %s %b %h %l %u
2015-01-26 14:36:03 POST /middleware/services/AuditService 0.022 200 428 127.0.0.1 - -
I have tried above format in tomcat 7 Its working fine,So I am expecting in wso2esb Because its using same flavor.
Where can I configure about Custom format for Http ,NHttp transport access logs
I have searched for http_access_log file in wso2esb folder but i haven't get that.
Thanks in advance.
If you need to modify the http_access logs, you can use this WSO2 doc for it. However, i just want to mentioned that, ESB is using pass through transport to communicate. Therefore if you need to see the HTTP request/response that is going through ESB, you can enable the wire logs using log4j.properties file. You just need to uncomment following and log pattern can be modified with log4j.properties
log4j.logger.org.apache.synapse.transport.http.wire=DEBUG
log4j.logger.org.apache.synapse.transport.http.headers=DEBUG
I'm trying to create a fail2ban filter that is going to ban the host when it sends over 100 POST requests over 30 seconds interval.
jail.local:
[nginx-postflood]
enabled = false
filter = nginx-postflood
action = myaction
logpath = /var/log/nginx/access.log
findtime = 30
bantime = 100
maxretry = 100
nginx-postflood.conf
[Definition]
failregex = ^<HOST>.*"POST.*
ignoreregex =
Using GREP i was able to test the regular expressions and indeed it matches Host and POST requests.
Problem is that it bans any Host that performs at least one POST request. This means likely that it's not taking findttime or maxretry options into consideration. In my opinion it's timestamp issue.
Sample line of nginx log:
5.5.5.5 - user [05/Aug/2014:00:00:09 +0200] "POST /auth HTTP/1.1" 200 6714 "http://referer.com" "Mozilla/5.0 (Windows NT 6.2; WOW64; rv:31.0) Gecko/20100101 Firefox/31.0"
Any help?
I guess it maybe to late for the answer but anyway...
The excerpt you have posed has the filter disabled.
enabled = false
As there is not mentioning of Fail2Ban version and syslog/fail2ban logs are missing for this jail.
I tested your Filter on fail2ban 0.9.3-1 and it works fine although I had to enable it and had to drop the line with action = myaction as you have not provided what you are expecting fail2ban to do.
Therefore this filter should work fine, based that it's enabled and the action is correct as well.
What is happening in the provided example is that Your Filter is disabled and fail2ban is using another Filter which checks the same log file and matches your regex but has more restrictive rules i.e ban after 1 request.