Chat Scripts; Creating A Chat Script; Editing And Adding Entries - Lantronix SCS Reference Manual

Additional Remote Networking
Deny all IP traffic matching a particular rule
1
Allow any packet
2
When this filter list is used, all IP traffic matching the specified rule is discarded. Therefore, some IP packets
are discarded without being compared to the second filter.
To prevent all packet traffic from the IP protocol, use the Define Site IP Disabled command instead of a
filter list.
Local>> DEFINE SITE irvine IP DISABLED
Configuring filter lists involves two primary steps: creating the filter list and associating the list with a
particular site. See Setting Up a Filter List on page 11-24 for complete configuration instructions.

5.2 Chat Scripts

Chat scripts enable the SCS to communicate with virtually any type of equipment at the remote site. They
are typically configured to send a string of characters, then wait to receive a particular string in return.
For example, the SCS might log into a remote site that has a login program. Using a chat script defined for
the site, the SCS could send carriage returns until the login prompt is returned, send a username, wait for
the password prompt, and send a password.

5.2.1 Creating a Chat Script

Chat scripts are defined one line at a time following a given syntax. A chat script to be used for outgoing
connections from a particular site can be created with the Define Site Chat commands. These commands
enable you to do the following: send a particular string, replace, add, or delete existing lines in the script,
expect a particular string, and configure timeout periods.
For example, to configure the script to send or expect strings, use the following command.
Local>> DEFINE SITE irvine CHAT SEND "hello?"
Local>> DEFINE SITE irvine CHAT EXPECT "login:"
Chat script expect strings are case-sensitive.
Note:

5.2.2 Editing and Adding Entries

To replace, delete, or insert entries, specify the line numbers. Figure 5-5 displays a few examples.
Local>> DEFINE SITE irvine CHAT REPLACE 1 EXPECT "login:"
Local>> DEFINE SITE irvine CHAT DELETE 4
Local>> DEFINE SITE irvine CHAT AFTER 3 EXPECT "login:"
Local>> DEFINE SITE irvine CHAT BEFORE 3 EXPECT "login:"
Figure 5-3: Preventing IP Packet Traffic
Figure 5-4: Sending and Expecting Strings
Figure 5-5: Editing Script Entries
5-3
Chat Scripts