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Diffstat (limited to '1.2-netsec/SECURITY')
-rw-r--r-- | 1.2-netsec/SECURITY | 67 |
1 files changed, 0 insertions, 67 deletions
diff --git a/1.2-netsec/SECURITY b/1.2-netsec/SECURITY deleted file mode 100644 index 3290cba48..000000000 --- a/1.2-netsec/SECURITY +++ /dev/null @@ -1,67 +0,0 @@ -==== Security Notes with Asterisk ==== - -PLEASE READ THE FOLLOWING IMPORTANT SECURITY RELATED INFORMATION. -IMPROPER CONFIGURATION OF ASTERISK COULD ALLOW UNAUTHORIZED USE OF YOUR -FACILITIES, POTENTIALLY INCURRING SUBSTANTIAL CHARGES. - -Asterisk security involves both network security (encryption, authentication) -as well as dialplan security (authorization - who can access services in -your pbx). If you are setting up Asterisk in production use, please make -sure you understand the issues involved. - -* NETWORK SECURITY - -If you install Asterisk and use the "make samples" command to install -a demonstration configuration, Asterisk will open a few ports for accepting -VoIP calls. Check the channel configuration files for the ports and IP addresses. - -If you enable the manager interface in manager.conf, please make sure that -you access manager in a safe environment or protect it with SSH or other -VPN solutions. - -For all TCP/IP connections in Asterisk, you can set ACL lists that -will permit or deny network access to Asterisk services. Please check -the "permit" and "deny" configuration options in manager.conf and -the VoIP channel configurations - i.e. sip.conf and iax.conf. - -The IAX2 protocol supports strong RSA key authentication as well as -AES encryption of voice and signalling. The SIP channel does not -support encryption in this version of Asterisk. - -* DIALPLAN SECURITY - -First and foremost remember this: - -USE THE EXTENSION CONTEXTS TO ISOLATE OUTGOING OR TOLL SERVICES FROM ANY -INCOMING CONNECTIONS. - -You should consider that if any channel, incoming line, etc can enter an -extension context that it has the capability of accessing any extension -within that context. - -Therefore, you should NOT allow access to outgoing or toll services in -contexts that are accessible (especially without a password) from incoming -channels, be they IAX channels, FX or other trunks, or even untrusted -stations within you network. In particular, never ever put outgoing toll -services in the "default" context. To make things easier, you can include -the "default" context within other private contexts by using: - - include => default - -in the appropriate section. A well designed PBX might look like this: - -[longdistance] -exten => _91NXXNXXXXXX,1,Dial(Zap/g2/${EXTEN:1}) -include => local - -[local] -exten => _9NXXNXXX,1,Dial(Zap/g2/${EXTEN:1}) -include => default - -[default] -exten => 6123,Dial(Zap/1) - - -DON'T FORGET TO TAKE THE DEMO CONTEXT OUT OF YOUR DEFAULT CONTEXT. There -isn't really a security reason, it just will keep people from wanting to -play with your Asterisk setup remotely. |