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Old 4th November 2011
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mfaridi mfaridi is offline
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Default help to make best PF rules and high performance

Thanks
after long time I want use OpenBSD and do not use FreeBSD . so I download last OpenBSD tonight and I will start use it
can I use my first rule in this post in OpenBSD 5 or no ?
which part I must change ?


REMARK from Administrator:

Because mfaridi decided see whether a change to OpenBSD will solve the "hangs" of ruleset on FreeBSD, this thread actually is a continuation of the following topic in the FreeBSD section: http://www.daemonforums.org/showthre...6479#post41206
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Last edited by J65nko; 13th November 2011 at 02:58 AM. Reason: Explaining the rationale of the edit
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Old 4th November 2011
J65nko J65nko is offline
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From http://www.openbsd.org/faq/pf/nat.html#config

Quote:
NAT is specified as an optional nat-to parameter to an outbound pass rule. Often, rather than being set directly on the pass rule, a match rule is used. When a packet is selected by a match rule, parameters (e.g. nat-to) in that rule are remembered and are applied to the packet when a pass rule matching the packet is reached. This permits a whole class of packets to be handled by a single match rule and then specific decisions on whether to allow the traffic can be made with block and pass rules.

The general format in pf.conf looks something like this:

Code:
    match out on interface [af] \
       from src_addr to dst_addr \
       nat-to ext_addr [pool_type] [static-port]
    ...
    pass out [log] on interface [af] [proto protocol] \
       from ext_addr [port src_port] \
       to dst_addr [port dst_port]
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Old 12th November 2011
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mfaridi mfaridi is offline
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after I read openbsd site documents about NAT in PF , I understand , if I want my pf.conf work good in OpenBSD 5 . I must change it and I make this new pf.conf
Code:
############################### MACROS ############################################################

ext_if          = "sk0"
int_if          = "re0"
External_net    = "10.10.10.192/27"
Local_net       = "192.168.0.0/24"
Local_Web       = "192.168.0.10"
Local_Srv       = "192.168.0.1"
Prtcol          = "{ tcp, udp }"
Admin_IP        = "{ 10.10.10.192/27, 11.11.11.0/21, 12.12.12.0/18 }"
ICMP_Types      = "{ echorep, unreach, squench, echoreq, timex }"

#Define ports for common internet services
#TCP_SRV         = "{ 25, 53, 80, 110, 143, 443, 465, 587, 993, 995, 8443 }"
#UDP_SRV         = "{ 53 }"
TCP_SRV         = "{ 80, 443 }"
UDP_SRV         = "{ }"
Samba_TCP       = "{ 139, 445 }"
Samba_UDP       = "{ 137, 138 }"


SERVER          = "10.10.10.200"
NAT1            = "10.10.10.194"
NAT2            = "10.10.10.195"
NAT3            = "10.10.10.196"
NAT4            = "10.10.10.197"
NAT5            = "10.10.10.198"
NAT6            = "10.10.10.199"
NAT7            = "10.10.10.201"
NAT8            = "10.10.10.202"
NAT9            = "10.10.10.203"
NAT10           = "10.10.10.204"
NAT11           = "10.10.10.205"
NAT12           = "10.10.10.206"
NAT13           = "10.10.10.207"
NAT14           = "10.10.10.208"
NAT15           = "10.10.10.209"
NAT16           = "10.10.10.210"
NAT17           = "10.10.10.211"
NAT18           = "10.10.10.212"
NAT19           = "10.10.10.213"
NAT20           = "10.10.10.214"
NAT21           = "10.10.10.215"
NAT22           = "10.10.10.216"
NAT23           = "10.10.10.217"
NAT24           = "10.10.10.218"
NAT25           = "10.10.10.219"

#### All IP of Groups which can be connect to Internet
paltalk1        = "{ 192.168.0.20, 192.168.0.21, 192.168.0.22 }"
paltalk2        = "{ 192.168.0.23, 192.168.0.24, 192.168.0.25 }"
paltalk3        = "{ 192.168.0.26, 192.168.0.27, 192.168.0.28, 192.168.0.29 }"
webdsgn1        = "{ 192.168.0.30, 192.168.0.31, 192.168.0.32 }"
webdsgn2        = "{ 192.168.0.33, 192.168.0.34, 192.168.0.35 }"
webdsgn3        = "{ 192.168.0.36, 192.168.0.37, 192.168.0.38 }"
webdsgn4        = "{ 192.168.0.39, 192.168.0.40, 192.168.0.41 }"
webdsgn5        = "{ 192.168.0.42, 192.168.0.43, 192.168.0.44 }"
webdsgn6        = "{ 192.168.0.45, 192.168.0.46, 192.168.0.47 }"
webdsgn7        = "{ 192.168.0.48, 192.168.0.49, 192.168.0.50 }"
webdsgn8        = "{ 192.168.0.51, 192.168.0.52, 192.168.0.53, 192.168.0.54 }"
rased1          = "{ 192.168.0.60, 192.168.0.61, 192.168.0.62 }"
rased2          = "{ 192.168.0.63, 192.168.0.64, 192.168.0.65 }"
rased3          = "{ 192.168.0.66, 192.168.0.67, 192.168.0.68 }"
rased4          = "{ 192.168.0.69, 192.168.0.70 }"
rased5          = "{ 192.168.0.200, 192.168.0.201, 192.168.0.202, 192.168.0.203, 192.168.0.204, 192.168.0.205 }"
rased6          = "{ 192.168.0.206, 192.168.0.207, 192.168.0.208, 192.168.0.209, 192.168.0.210, 192.168.0.211 }"
rased7          = "{ 192.168.0.212, 192.168.0.213, 192.168.0.214, 192.168.0.215, 192.168.0.216, 192.168.0.217 }"
rased8          = "{ 192.168.0.218, 192.168.0.219, 192.168.0.220, 192.168.0.221, 192.168.0.222, 192.168.0.223, 192.168.0.224, 192.168.0.225  }"
admin1          = "{ 192.168.0.55, 192.168.0.56, 192.168.0.57 }"
admin2          = "{ 192.168.0.58, 192.168.0.59 }"

############################### TABLES ############################################################

#Define privileged network address sets
table <priv_nets> const { 127.0.0.0/8, 192.168.0.0/16, 13.13.0.0/12, 10.0.0.0/8, 0.0.0.0/8, \
                          14.14.0.0/16, 192.0.2.0/24, 15.15.15.0/23, 224.0.0.0/3 }
table <badguys> persist file "/usr/local/pf/Network/blocklist.lst"
table <hackers> persist file "/usr/local/pf/Network/hackers.lst"

#Define Favoured client hosts
table <Admin>   persist file "/usr/local/pf/Network/Admin.lst"
table <Paltalk> persist file "/usr/local/pf/Network/Paltalk.lst"
table <WebDsgn> persist file "/usr/local/pf/Network/WebDsgn.lst"
table <Rased>   persist file "/usr/local/pf/Network/Rased.lst"
table <LocalHost> const { self }

############################### OPTIONS ############################################################
#Default behaviour
set timeout { interval 10, frag 30 }
set timeout { tcp.first 120, tcp.opening 30, tcp.established 86400 }
set timeout { tcp.closing 900, tcp.finwait 45, tcp.closed 90 }
set timeout { udp.first 60, udp.single 30, udp.multiple 60 }
set timeout { icmp.first 20, icmp.error 10 }
set timeout { other.first 60, other.single 30, other.multiple 60 }
set timeout { adaptive.start 0, adaptive.end 0 }
set limit { states 10000, frags 5000 }
set loginterface $ext_if
set optimization normal
set block-policy drop
set require-order yes
set fingerprints "/etc/pf.os"
set skip on lo0
#set state-policy if-bound


############################### TRAFFIC NORMALIZATION ##############################################
#Filter traffic for unusual packets
scrub in all


############################### TRANSLATION ######################################################

#NAT for the external traffic
#Mask internal ip addresses with actual external ip address
#nat pass on $ext_if from $Local_net to any -> $SERVER


match out on egress inet from !(paltalk1) to any nat-to (NAT1)

match out on egress inet from !(paltalk2) to any nat-to (NAT2)

match out on egress inet from !(paltalk3) to any nat-to (NAT3)

match out on egress inet from !(webdsgn1) to any nat-to (NAT4)

match out on egress inet from !(webdsgn2) to any nat-to (NAT5)

match out on egress inet from !(webdsgn3) to any nat-to (NAT6)

match out on egress inet from !(webdsgn4) to any nat-to (NAT7)

match out on egress inet from !(webdsgn5) to any nat-to (NAT8)

match out on egress inet from !(webdsgn6) to any nat-to (NAT9)

match out on egress inet from !(webdsgn7) to any nat-to (NAT10)

match out on egress inet from !(webdsgn8) to any nat-to (NAT11)

match out on egress inet from !(rased1) to any nat-to (NAT12:0)

match out on egress inet from !(rased2) to any nat-to (NAT13)

match out on egress inet from !(rased3) to any nat-to (NAT14)

match out on egress inet from !(rased4) to any nat-to (NAT15)

match out on egress inet from !(rased5) to any nat-to (NAT16)

match out on egress inet from !(rased6) to any nat-to (NAT17)

match out on egress inet from !(rased7) to any nat-to (NAT18)

match out on egress inet from !(rased8) to any nat-to (NAT19)

match out on egress inet from !(admin1) to any nat-to (NAT20)

match out on egress inet from !(admin2) to any nat-to (NAT21)



############################### PACKET FILTERING #################################################

# Default Rule
pass quick on { $ext_if, $int_if } all keep state
please help me to find mistake in this new pf.conf .
I have 27 valid or static IPs and I want each Static IPs or valid IPs work with 3 invalid IPs.

please help me id I have mistake in this pf.conf . solve it .
thanks in advance
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