Dark Reading is part of the Informa Tech Division of Informa PLC

This site is operated by a business or businesses owned by Informa PLC and all copyright resides with them.Informa PLC's registered office is 5 Howick Place, London SW1P 1WG. Registered in England and Wales. Number 8860726.

Comments
US Turning Up the Heat on North Korea's Cyber Threat Operations
Newest First  |  Oldest First  |  Threaded View
tdsan
50%
50%
tdsan,
User Rank: Ninja
9/17/2019 | 7:15:41 PM
Re: Utilize the ISP and other vendors to block countries
Well no, not in this case, if we are blocking all traffic (however, hidden or obscure), there will always be a source and destination (we are blocking everything from their country, dns and all). This can be done at the ISP or onsite, 95% of your traffic from the outside world can be blocked. Now if they use a jump host (but the ISP or Akamai would block that as well), we could alleviate this hacking, but it would have to come from a united front (if we are not doing business with them, then why am I allowing them to constantly check my network).

I am not just looking at your site, but layers of protection at the source all the way to the destination. One thing I must say, even when I blocked countries that were considered bad, the hack attempts went down from 2000+ to 5. Not sure about you, but I can deal with that (my UFW/IPTables is blocking all the rest along with SELinux).

T

 
WN2QU
50%
50%
WN2QU,
User Rank: Guru
9/17/2019 | 10:48:06 AM
Re: Utilize the ISP and other vendors to block countries
Not if they are using tools with Obfuscated Server Lists (OSL's) right? 
tdsan
50%
50%
tdsan,
User Rank: Ninja
9/16/2019 | 8:51:53 PM
Utilize the ISP and other vendors to block countries
Shouldnt' we block country access where this is part of the sanctions imposed on North Korea. By doing so, we remove access to business in the US, this can be done at the ISP. Akamai has the ability to filter traffic at the source and PaloAlto has the ability to block countries (the entire block). With a little programming, MS Windows can do that as well by using PowerShell or NetSH.
Get-NetFirewallRule | 
Where { ($_.DisplayName -like "$RuleName-#*") -And ($_.Description -like "*Do not edit rule by hand*") } |
Remove-NetFirewallRule

# Don't create the firewall rules again if the -DeleteOnly switch was used.
if ($DeleteOnly) { Exit }

$Ranges = Get-Content $File | Where { ($_.Trim().Length -ne 0) -and ($_ -Match '^[0-9a-f]{1,4}[\.\:]') } $RangeCount = $Ranges.Count # Confirm that the InputFile had at least one IP address or IP range to block. if ($RangeCount -eq 0) { "`nThe InputFile contained no IP addresses to block, quitting...`n" Exit } $MaxRangesPerRule = 2000

I know there are ways to address the problem at the source, but it is dependent on the relationships we are trying to maintain.

T

 


7 Tips for Infosec Pros Considering A Lateral Career Move
Kelly Sheridan, Staff Editor, Dark Reading,  1/21/2020
For Mismanaged SOCs, The Price Is Not Right
Kelly Sheridan, Staff Editor, Dark Reading,  1/22/2020
Register for Dark Reading Newsletters
White Papers
Video
Cartoon Contest
Write a Caption, Win a Starbucks Card! Click Here
Latest Comment: This comment is waiting for review by our moderators.
Current Issue
IT 2020: A Look Ahead
Are you ready for the critical changes that will occur in 2020? We've compiled editor insights from the best of our network (Dark Reading, Data Center Knowledge, InformationWeek, ITPro Today and Network Computing) to deliver to you a look at the trends, technologies, and threats that are emerging in the coming year. Download it today!
Flash Poll
How Enterprises are Attacking the Cybersecurity Problem
How Enterprises are Attacking the Cybersecurity Problem
Organizations have invested in a sweeping array of security technologies to address challenges associated with the growing number of cybersecurity attacks. However, the complexity involved in managing these technologies is emerging as a major problem. Read this report to find out what your peers biggest security challenges are and the technologies they are using to address them.
Twitter Feed
Dark Reading - Bug Report
Bug Report
Enterprise Vulnerabilities
From DHS/US-CERT's National Vulnerability Database
CVE-2019-16029
PUBLISHED: 2020-01-26
A vulnerability in the application programming interface (API) of Cisco Smart Software Manager On-Prem could allow an unauthenticated, remote attacker to change user account information which can prevent users from logging in, resulting in a denial of service (DoS) condition of the web interface. Th...
CVE-2020-3115
PUBLISHED: 2020-01-26
A vulnerability in the CLI of the Cisco SD-WAN Solution vManage software could allow an authenticated, local attacker to elevate privileges to root-level privileges on the underlying operating system. The vulnerability is due to insufficient input validation. An attacker could exploit this vulnerabi...
CVE-2020-3121
PUBLISHED: 2020-01-26
A vulnerability in the web-based management interface of Cisco Small Business Smart and Managed Switches could allow an unauthenticated, remote attacker to conduct a cross-site scripting (XSS) attack against a user of the interface. The vulnerability is due to insufficient validation of user-supplie...
CVE-2020-3129
PUBLISHED: 2020-01-26
A vulnerability in the web-based management interface of Cisco Unity Connection Software could allow an authenticated, remote attacker to perform a stored cross-site scripting (XSS) attack. The vulnerability is due to insufficient input validation by the web-based management interface. An attacker c...
CVE-2020-3131
PUBLISHED: 2020-01-26
[CVE-2020-3131_su] A vulnerability in the Cisco Webex Teams client for Windows could allow an authenticated, remote attacker to cause the client to crash, resulting in a denial of service (DoS) condition. The attacker needs a valid developer account to exploit this vulnerability. The vulnerability i...