Ken Felix Security Blog: September 2018

Wednesday, September 26, 2018

FortiOS API and policy creations

I had an earlier email dialog from a user that found my API blog that I posted earlier and he had a question on adding a new policy within FortiOS

Note , the POST action creates the policy and PUT modifies any existing items. You need to ensure you select the right policyid#.

Be very very very careful to ensure you do NOT modify or DELETE a policyid# that was not correct.

What a lot of org that uses API automations they run the script to backup the firewall 1st or list out all policies and then execute the changes regardless if it's and ADD DELETE or MODIFY { POST DELETE PUT }

Also make sure you place sanity checks

* if your going blacklist on add entries to the address group with a /32 subnet value

* check your feeds and scripts to ensure you do not mistakenly add your own blocks or trusted networks
* be very careful with DELETE operations

* make sys-config backups before and after the operations are ran

* !!!! YMMV and use extreme caution until you get it all under control !!!!

!!!!Any API call that's a GET is a Read-Only and will cause zero harm!!!!

NSE ( network security expert) and Route/Switching Engineer

kfelix -----a----t---- socpuppets ---dot---com

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Sunday, September 16, 2018

using curl to find support options

The http.request.method OPTIONS is not widely used or known but can be used in some case to find support request methods that a webserver can support and for that URI

Here's an example of a OPTIONS request-method for http://www.example.com/

example1

" So in the above we know "OPTIONS" "GET" "HEAD" "POST" are the only supported methods "

And here's another example

example2

example3

Keep in mind a lot of web-server are not configured for this function and not recognize this request method.

In some cases if you send a request method not recognized, the web-server will send a http.status.code 405 { HTTP/1.1 405 Method Not Allowed } and actually indicate what is supported.

or

The new trend is to send back a html body that tells you the request.method is not supported or some other fancy information.

<TITLE>Unsupported Request</TITLE>

</HEAD><BODY>

----------------------or----------------

<TITLE>Bad Request</TITLE>

</HEAD><BODY>

<H1>Bad Request</H1>

Your browser sent a request that this server could not understand.<P>

Reference #7.827008d1.1537091841.0

</BODY>

--------------------or-----------------

<html>

<head><title>405 Not Allowed</title></head>

<center><h1>405 Not Allowed</h1></center>

<hr><center>nginx</center>

</body>

</html>

You might get lucky!

NSE ( network security expert) and Route/Switching Engineer

kfelix -----@---- socpuppets --- "*"---com

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Saturday, September 15, 2018

Forcepoint SMC logserver rollup script

The forcepoint Security Management Center allows for you to query logs. One issues, logs can easily be pruned but no on board features for log rollup to a remote-server like a SFTP/SCP.

Here's a quick script that will allow you to run a script via cron job and on a regular interval to rollup logs from the SMC logServer to a remote scp. This a bash script

/bin/bash

# kfelix@socpuppets.com

######## LOG ROLLER IT ON UP ########

# rev 1.0

D=`date +Y%y_Moth%m_Day%d_%s`

H1="<insert the rollup SFTP/SCP server name here >

H2="<insert the rollup SFTP/SCP server name here >

# find all files older than 180days in the /usr/local/forcepoint/smc/data/storage/

LOG_DIR="/usr/local/forcepoint/smc/data/stor

age/"

find $LOG_DIR -name "*.arch" -mtime +180 > /tmp/logsarchs

# take archive list and create tarball.gz

tar czvf ROLLUP.$D.tar.gz --files-from /tmp/logsarchs

# delete listed files

cat /tmp/logsarchs | xargs rm -f

# delete logsarchs catalog text file

rm /tmp/logsarchs

# install at least two rollup destinations

scp ./ROLLUP.$D.tar.gz rollupusername:userpassword@$H1/

scp ./ROLLUP.$D.tar.gz rollupusername:userpassword@$H2/

# rm old archive gz tarball to clear up space

rm -i ROLLUP.$D.tar.gz

This can help on storage issues or before you have storage issues. You could even set a trigger based on the diskutilizaion % and have the script fire off if the disk% is 75% or more

e.g

C=` df -H | grep centos | awk '{ print $5 }' | cut -d % -f 1 `

if [ $C -lt 75 ]; then

exit

elif [ $C -gt 75 ] ; then

echo " Disk Usage is High at $C% utilization on $HOSTNAME " | mail -s " LogRoller SMC " socteam_maillist@socpuppets.com

D=`date +Y%y_Moth%m_Day%d_%s`

H1="<insert the rollup SFTP/SCP server name here >

H2="<insert the rollup SFTP/SCP server name here >

# find all files older than 180days in the /usr/local/forcepoint/smc/data/storage/

LOG_DIR="/usr/local/forcepoint/smc/data/stor

age/"

find $LOG_DIR -name "*.arch" -mtime +180 > /tmp/logsarchs

# take archive list and create tarball.gz

tar czvf ROLLUP.$D.tar.gz --files-from /tmp/logsarchs

# delete listed files

cat /tmp/logsarchs | xargs rm -f

# delete logsarchs catalog text file

rm /tmp/logsarchs

# install at least two rollup destinations

scp ./ROLLUP.$D.tar.gz rollupusername:userpassword@$H1/

scp ./ROLLUP.$D.tar.gz rollupusername:userpassword@$H2/

# rm old archive gz tarball to clear up space

rm -i ROLLUP.$D.tar.gz

Remember a predefine alert exists for local Management disk usage if the LogServer is local to the MgtServer

NSE ( network security expert) and Route/Switching Engineer

kfelix -----@---- socpuppets --- "*"---com

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Thursday, September 13, 2018

Squid Proxy redirection Forcepoint NGFW

Here's a Forcepoint SQUID redirection for the NGFW

SMC v6.4.4
NGFW v6.4.1
SQUID v3.5.20

1st you need to define a proxy-server element under Configuration> network > servers

In your access.rule you only need to set the HTTP/HTTPS and direct to the squid server.

The squid access.log and NGFW log Browser can be monitored.

squid.conf

NSE ( network security expert) and Route/Switching Engineer

kfelix -----@---- socpuppets --- "*"---com

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Wednesday, September 12, 2018

Squid for FortiOS

# squid
#
wccp2_router 192.168.1.100

wccp2_forwarding_method gre

wccp2_return_method gre

wccp2_service standard 0 password=FortinetWEbberCache

#fortigate WCCPcfg

config system interface
edit "port1"
set vdom "root"
set ip 192.168.1.100 255.255.254.0
set allowaccess ping ssh https
set type physical
set wccp enable
next
end

config system wccp
edit "0"
set router-id 192.168.1.100
set server-list 192.168.1.99
set authentication enable
set password FortinetWEbberCache
end

config firewall policy
edit 0
set srcintf "LANLOCAL"
set dstintf "EXTWANLEVEL3"
set srcaddr "LOCALLAN_NET-GROUPS"
set dstaddr "all"
set action accept
set schedule "always"
set service "HTTP"
set wccp enable
set comments "HTTP TRAFFIC TO INTERCEPT FROM ALLOWED LAN USERS"
set nat enable
next
edit 0
set srcintf "port1"
set dstintf "EXTWANLEVEL3"
set srcaddr "squidproxy"
set dstaddr "all"
set action accept
set schedule "always"
set service "DNS" "HTTP" "PING"
set comments "SQUID PROXY"
set nat enable
next
edit 0
set srcintf "LANLOCAL"
set dstintf "EXTWANLEVEL3"
set srcaddr "LOCALLAN_NET-GROUPS"
set dstaddr "all"
set action deny
set schedule "always"
set service "HTTP"
set comments "SAFEGUARD TO DROP ANY NONE PROXY"
end

NSE ( network security expert) and Route/Switching Engineer

kfelix -----a----t---- socpuppets ---dot---com

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Tuesday, September 11, 2018

DNS flagday edns

EDNS is one of these tricky items that can bring a lot of dns answers . Per DNS standards RFCs

DNS-server should not flake out if a EDNS version options are sent and yet EDNS is not supported but in a lot of cases this is not the case.

dnsflagday has a test and compliance that you can run against any domain and get the compliance results. They also have great collections and statistics.

running the test is simple, just add you domain

A pass or fail ( see fail below )

Details of the test results are provided on failures

So what do you do if you have a failure? Easy, you upgrade your dns-server !

Alternative; you can use the edns compliance checker at this URL link

https://ednscomp.isc.org/ednscomp/a768f12b06

NSE ( network security expert) and Route/Switching Engineer

kfelix -----a----t---- socpuppets ---dot---com

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