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# $OpenBSD: relayd.conf,v 1.14 2011/04/07 13:33:52 reyk Exp $
#
# Macros
#
ext_addr="192.168.1.1"
webhost1="10.0.0.1"
webhost2="10.0.0.2"
sshhost1="10.0.0.3"
#
# Global Options
#
# interval 10
# timeout 1000
# prefork 5
#
# Each table will be mapped to a pf table.
#
table <webhosts> { $webhost1 $webhost2 }
table <fallback> { 127.0.0.1 }
#
# Services will be mapped to a rdr rule.
#
redirect www {
listen on $ext_addr port http interface trunk0
# tag every packet that goes thru the rdr rule with RELAYD
tag RELAYD
forward to <webhosts> check http "/" code 200
forward to <fallback> check icmp
}
#
# Relay and protocol for HTTP layer 7 loadbalancing and SSL acceleration
#
http protocol httpssl {
header append "$REMOTE_ADDR" to "X-Forwarded-For"
header append "$SERVER_ADDR:$SERVER_PORT" to "X-Forwarded-By"
header change "Connection" to "close"
# Various TCP performance options
tcp { nodelay, sack, socket buffer 65536, backlog 128 }
# ssl { no sslv2, sslv3, tlsv1, ciphers HIGH }
# ssl session cache disable
}
relay wwwssl {
# Run as a SSL accelerator
listen on $ext_addr port 443 ssl
protocol httpssl
# Forward to hosts in the webhosts table using a src/dst hash
forward to <webhosts> port http mode loadbalance \
check http "/" code 200
}
#
# Relay and protocol for simple TCP forwarding on layer 7
#
protocol sshtcp {
# The TCP_NODELAY option is required for "smooth" terminal sessions
tcp nodelay
}
relay sshgw {
# Run as a simple TCP relay
listen on $ext_addr port 2222
protocol sshtcp
# Forward to the shared carp(4) address of an internal gateway
forward to $sshhost1 port 22
}
#
# Relay and protocol for a transparent HTTP proxy
#
http protocol httpfilter {
# Return HTTP/HTML error pages to the client
return error
# Block disallowed sites
label "URL filtered!"
request url filter "www.example.com/"
# Block disallowed browsers
label "Please try a <em>different Browser</em>"
header filter "Mozilla/4.0 (compatible; MSIE *" from "User-Agent"
# Block some well-known Instant Messengers
label "Instant messenger disallowed!"
response header filter "application/x-msn-messenger" from "Content-Type"
response header filter "app/x-hotbar-xip20" from "Content-Type"
response header filter "application/x-icq" from "Content-Type"
response header filter "AIM/HTTP" from "Content-Type"
response header filter "application/x-comet-log" from "Content-Type"
}
relay httpproxy {
# Listen on localhost, accept diverted connections from pf(4)
listen on 127.0.0.1 port 8080
protocol httpfilter
# Forward to the original target host
forward to destination
}
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