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# Licensed to the Apache Software Foundation (ASF) under one
# or more contributor license agreements. See the NOTICE file
# distributed with this work for additional information
# regarding copyright ownership. The ASF licenses this file
# to you under the Apache License, Version 2.0 (the
# "License"); you may not use this file except in compliance
# with the License. You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing,
# software distributed under the License is distributed on an
# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
# KIND, either express or implied. See the License for the
# specific language governing permissions and limitations
# under the License.
# Redirect TCP/IP traffic from one port to another port, useful to handle
# incoming traffic on standard reserved ports like 80 or 443 for example
# in an unprivileged user server process bound to a non-reserved port
# Example: ip-redirect 80 8090 eth0
source=$1
target=$2
if [ "$3" != "" ]; then
intf=$3
else
intf="eth0"
fi
sudo /sbin/iptables -t nat -A PREROUTING -i $intf -p tcp --dport $source -j REDIRECT --to-port $target
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