Security Hardening for OS and Web Portal access on Telcobridges System
Contents |
Applicable Products
- TSBC
- TMG800, TMG3200, TMG7800-CTRL
- TSG800, TSG3200
- Tdev Linux server with (CentOS, RedHat, etc) running Toolpack software
Introduction
This page discusses some means for improving the overall security of Telcobridges system against unwanted attacks and vulnerabilities with adverse exposure as introduced from internet or connecting to network in general.
Management Port Protection
Keep the management port in a protected environment (behind a firewall). Other ports do not have access to the OS (unless configured on the web portal). Normally, other ports on the system are configured with services other than management, for example, Voip0 is configured with SIP and RTP and this port will care for these specific protocols only and discard the rest. See example of VOIP port IP interface configuration and Services to use
SSH Access Security
Use a strong password for the SSH access. Default password is a quite strong password that including alpanumerical and symbol characters, etc. in lengthly number.
CentOS Update for New Packages
- Keep system CentOS with database /and Ruby up to date as needed, using yum update or through web portal by doing upgrade linux packages, see Upgrade CentOS.
- Telcobridges has adopted a proactive OS update practice and managing Telcobridges repository according to CentOS annoucement.
- Also, on January 27, 2015, a vulnerability named "GHOST" in the glibc library was publicly announced. GHOST is also referred as CVE-2015-0235. The vulnerability is a buffer overflow in the gethostbyname family of functions that can allow arbitrary code execution. See GHOST for details on what is affected and update procedure of CentOS 5 from Telcobridges repository.
Web Portal Access Security
Web Portal access security enhancement is available on Toolpack 2.10.19 and onwards
- After a web portal failed login access, it will wait about 2 seconds, to prevent brute force attack on web portal login
- There will be new password complexity requirements such as,
- At least 8 characters total
- At least 1 upper case character
- At least 1 lower case character
- At least 1 number
- At least 1 special character
- User account disabling (there will be a check box to indicate active users account), uncheck it will disable the account
- Password confirmation when creating/editing users
- Web session auto-logout after a certain amount of time without activity (default 30 mins)
