GT Information Technology Frequently Asked Questions
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Which ports are blocked at the inbound border?

This FAQ was last modified on: Tuesday, August 13, 2019 02:19pm
Category: 
  • Networking [1]

The following is a list of ports that are blocked at the campus inbound firewall.

If there is a need to access one of the services listed below from off campus, you can first try connecting to the campus VPN.

Click here [2] for a FAQ on installing the VPN client.

 

 



Category                                              Ports                                                   Service                                                                                           
List of ports blocked at campus firewall
     
Databases 1433-1434/tcp+udp Microsoft SQL [3]
  1521/tcp+udp, 1526/tcp Oracle database [4] default listener
  3306/tcp MySQL [5] database system
  5432/tcp PostgreSQL [6] database system
  11211/udp Memcached [7] udp protocol (used for amplification attacks)
     
Remote Administration 111/tcp+udp, 135/tcp+udp RPC [8]
  161/udp SNMP [9]
  407/tcp Timbuktu [10]
  901-904/tcp+udp VMware [11] Remote Console 
  3389/tcp, 3489/tcp Windows Remote Desktop Protocol [12] (RDP)
  3283/tcp+udp   Apple Remote Desktop [13]   
  4899/tcp Radmin
  5800/tcp, 5900-5901/tcp             Virtual Network Computing [14] (VNC)
  5631/tcp, 5632/udp Symantec [15] pcAnywhere [16]

 

860/tcp, 3260/tcp iSCSI [17] (NAS)
     
File Sharing 548/tcp, 3283/tcp+udp Apple Filing Protocol [18] (AFP)
  137-139/tcp+udp NetBIOS [19] NetBIOS Name Service
  445/tcp+udp Active Directory [20]
  2049/tcp+udp NFS [21]
     
Printing 515/tcp LPD [22]
  631/tcp+udp Common Unix Printing System [23] (CUPS)
  631/tcp+udp Internet Printing Protocol [24] (IPP)
  9100/tcp HP JetDirect printing [25] (PDL)
     
Proxy Services 3128/tcp Squid [26] proxy server
     
Backup Services 7937-9936/tcp+udp

Sun EBS / EMC NetWorker

     
Malware 13620/udp, 16464-16465/udp, 16470-16471/udp, 21315/udp, 21810/udp, 22292/udp, 34354-34355/udp ZeroAccess Botnet [27]
  2745/tcp Mass Mailing Worm
  6667/tcp IRC [28]
  27374/tcp+udp  
  31337/tcp+udp Back Orifice [29]
  53413/udp  
     
Miscellaneous 42/tcp+udp WINS [30]
  995-999/udp  
  1900/udp UPnP [31]
  5353/udp Muliticast DNS [32]
     
Amplifiers [33] 19/udp chargen [34]

 

 

 


Source URL: https://faq.oit.gatech.edu/content/which-ports-are-blocked-inbound-border

Links
[1] https://faq.oit.gatech.edu/tags/category/networking
[2] http://www.oit.gatech.edu/service/vpn/vpn-service-remote-access
[3] https://en.wikipedia.org/wiki/Microsoft_SQL_Server
[4] http://en.wikipedia.org/wiki/Oracle_database
[5] http://en.wikipedia.org/wiki/MySQL
[6] http://en.wikipedia.org/wiki/PostgreSQL
[7] https://en.wikipedia.org/wiki/Memcached
[8] https://www.speedguide.net/port.php?port=111
[9] https://en.wikipedia.org/wiki/Simple_Network_Management_Protocol
[10] http://en.wikipedia.org/wiki/Timbuktu_(software)
[11] http://en.wikipedia.org/wiki/VMware
[12] http://en.wikipedia.org/wiki/Remote_Desktop_Protocol
[13] http://en.wikipedia.org/wiki/Apple_Remote_Desktop
[14] http://en.wikipedia.org/wiki/Virtual_Network_Computing
[15] http://en.wikipedia.org/wiki/Symantec
[16] http://en.wikipedia.org/wiki/Pcanywhere
[17] http://en.wikipedia.org/wiki/ISCSI
[18] http://en.wikipedia.org/wiki/Apple_Filing_Protocol
[19] http://en.wikipedia.org/wiki/NetBIOS
[20] http://en.wikipedia.org/wiki/Active_Directory
[21] https://en.wikipedia.org/wiki/Network_File_System
[22] https://www.speedguide.net/port.php?port=515
[23] http://en.wikipedia.org/wiki/Common_Unix_Printing_System
[24] http://en.wikipedia.org/wiki/Internet_Printing_Protocol
[25] http://en.wikipedia.org/wiki/Page_description_language
[26] http://en.wikipedia.org/wiki/Squid_(software)
[27] https://en.wikipedia.org/wiki/ZeroAccess_botnet
[28] https://en.wikipedia.org/wiki/Internet_Relay_Chat
[29] https://en.wikipedia.org/wiki/Back_Orifice
[30] https://en.wikipedia.org/wiki/Windows_Internet_Name_Service
[31] https://www.speedguide.net/port.php?port=1900
[32] https://en.wikipedia.org/wiki/Multicast_DNS
[33] https://en.wikipedia.org/wiki/Denial-of-service_attack#Amplification
[34] https://en.wikipedia.org/wiki/Character_Generator_Protocol