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External Hosts' Network Traffic Filtering in BMENET

What kind of traffic do we filter or block and why?

Information on filtered BME hosts is accessible from within the university's network or after logging in.

External hosts' traffic is blocked in the university campus network if it endangers or severly disturbs the operation of the BMENET backbone or central services. Usual causes of these actions are erroneous configuration, broken software, intrusion, worm or virus infection, or user misbehaviour.

What are the symptoms of traffic filtering?

Traffic filtering is based on IP address. Our backbone routers drop all IP packets sourced by or sent to the hosts listed below on this page. This prevents the listed hosts from communicating with BMENET hosts.

How to unblock network traffic?

Unblocking may be requested by the owner of the problematic host after having resolved the problem that led to traffic filtering. IP addresses blocked more than a year ago are unblocked also without request.

Please send unblock requests to filter@bme.hu.

Current filtering

IP address start date problem
23.23.243.184 2014-05-09 scam site
23.227.201.147 2016-07-21 spam
46.29.255.7 2016-05-03 spam
54.243.238.221 2014-05-09 scam site
62.193.232.95 2014-01-21 ssh scan
37.59.116.254 2014-12-13 DDoS
46.70.174.65 2014-12-13 DDoS
46.71.158.242 2014-12-13 DDoS
85.14.138.114 2016-06-02 phishing mail.login.bme.hu.rebelz.org
94.74.81.13 (s02.netengi.com) 2016-12-22 SMTP brute force
122.225.109.120 2014-11-25 ssh brute force
152.212.205.198 2016-05-03 spam
157.181.172.83 2014-09-28
209.217.232.204 2014-06-06 scam site
211.140.23.153 2013-02-27 brute force
213.251.185.184 2013-08-09 TCP 22 scan
221.120.224.179 2014-04-09 spam
 

Last modified: 2017-05-03 14:32 CEST