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udp ports

how to go about opening UDP ports between two segment say two difference sec level.

1 REPLY

Re: udp ports

Hi,

Opening UDP is similar to TCP. Depending on your requirement, you need to configure address translation or no translation (nat0) and ACL, then bind it to the interface where UDP traffic will go out, e.g if DMZ (sec50) host need to access Inside (sec100) server, create the ACLs and bind it on the DMZ interface (use "access-group xxx in interface " command).

The difference is that UDP is connectionless, so if you issue "sh conn" command, you'll not see the connection details like TCP. Simple example is when client accessing DNS Server via port 53 (command: sh conn | i 53)

Rgds,

AK

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