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alg

Syntax

alg {
dns {
disable;
traceoptions {
flag {
all <extensive>;
}
}
}
ftp {
disable;
traceoptions {
flag {
all <extensive>;
}
}
}
h323 {
application-screen {
message-flood {
gatekeeper threshold rate ;
}
unknown-message {
permit-nat-applied;
permit-routed;
}
}
disable;
endpoint-registration-timeout seconds ;
media-source-port-any;
traceoptions {
flag {
all <detail | extensive | terse>;
cc <detail | extensive | terse>;
h225-asn1 <detail | extensive | terse>;
h245 <detail | extensive | terse>;
h245-asn1 <detail | extensive | terse>;
q931 <detail | extensive | terse>;
ras <detail | extensive | terse>;
ras-asn1 <detail | extensive | terse>;
}
}
}
mgcp {
application-screen {
connection-flood threshold rate ;
message-flood threshold rate ;
unknown-message {
permit-nat-applied;
permit-routed;
}
}
disable;
inactive-media-timeout seconds ;
maximum-call-duration minutes ;
traceoptions {
flag {
all <extensive>;
call <extensive>;
cc <extensive>;
decode <extensive>;
error <extensive>;
nat <extensive>;
packet <extensive>;
rm <extensive>;
}
}
transaction-timeout seconds ;
}
msrpc {
disable;
traceoptions {
flag {
all <extensive>;
}
}
}
pptp {
disable;
traceoptions {
flag {
all <extensive>;
}
}
}
real {
disable;
traceoptions {
flag {
all <extensive>;
}
}
}
rsh {
disable;
traceoptions {
flag {
all <extensive>;
}
}
}
rtsp {
disable;
traceoptions {
flag {
all <extensive>;
}
}
}
sccp {
application-screen {
call-flood threshold rate ;
unknown-message {
permit-nat-applied;
permit-routed;
}
}
disable;
inactive-media-timeout seconds ;
traceoptions {
flag {
all <extensive>;
call <extensive>;
cc <extensive>;
cli <extensive>;
decode <extensive>;
error <extensive>;
init <extensive>;
nat <extensive>;
rm <extensive>;
}
}
}
sip {
application-screen {
protect {
deny {
all | destination-ip address ;
timeout seconds ;
}
}
unknown-message {
permit-nat-applied;
permit-routed;
}
}
c-timeout minutes ;
disable;
disable-call-id-hiding;
inactive-media-timeout seconds ;
maximum-call-duration minutes ;
retain-hold-resource;
t1-interval milliseconds ;
t4-interval seconds ;
traceoptions {
flag {
all <detail | extensive | terse>;
call <detail | extensive | terse>;
cc <detail | extensive | terse>;
nat <detail | extensive | terse>;
parser <detail | extensive | terse>;
rm <detail | extensive | terse>;
}
}
}
sql {
disable;
traceoptions {
flag {
all <extensive>;
}
}
}
sunrpc {
disable;
traceoptions {
flag {
all <extensive>;
}
}
}
talk {
disable;
traceoptions {
flag {
all <extensive>;
}
}
}
tftp {
disable;
traceoptions {
flag {
all <extensive>;
}
}
}
}

Hierarchy Level

[edit security]

Release Information

Statement introduced in Release 8.5 of JUNOS software.

Description

Configure an Application Layer Gateway (ALG) on the device. An ALG runs as a service and can be associated in policies with specified types of traffic. ALGs are enabled by default.

This statement is supported on J-series and SRX-series devices.

Options

The remaining statements are explained separately.

Usage Guidelines

For configuration instructions and examples, see the JUNOS Software Security Configuration Guide.

Required Privilege Level

security—To view this statement in the configuration.

security-control—To add this statement to the configuration.


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