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BSD use SYN,ACK filter to catch autottl

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bol-van
2024-03-09 12:45:17 +03:00
parent 48850b5f4e
commit 5ef3fb9e97
4 changed files with 31 additions and 16 deletions
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18
docs/bsd.eng.md
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@@ -155,6 +155,8 @@ For all traffic:
```
ipfw delete 100
ipfw add 100 divert 989 tcp from any to any 80,443 out not diverted not sockarg xmit em0
# required for autottl mode only
ipfw add 100 divert 989 tcp from any 80,443 to any tcpflags syn,ack in recv em0
/opt/zapret/nfq/dvtws --port=989 --dpi-desync=split2
```
@@ -163,6 +165,8 @@ Process only table zapret with the exception of table nozapret:
ipfw delete 100
ipfw add 100 allow tcp from me to table\(nozapret\) 80,443
ipfw add 100 divert 989 tcp from any to table\(zapret\) 80,443 out not diverted not sockarg xmit em0
# required for autottl mode only
ipfw add 100 divert 989 tcp from table\(zapret\) 80,443 to any tcpflags syn,ack in recv em0
/opt/zapret/nfq/dvtws --port=989 --dpi-desync=split2
```
@@ -349,17 +353,19 @@ table <zapret> file "/opt/zapret/ipset/zapret-ip.txt"
table <zapret-user> file "/opt/zapret/ipset/zapret-ip-user.txt"
table <nozapret> file "/opt/zapret/ipset/zapret-ip-exclude.txt"
pass out quick on em0 inet proto tcp to <nozapret> port {80,443}
pass in quick on em0 inet proto tcp from <zapret> port {80,443} no state
pass out quick on em0 inet proto tcp to <zapret> port {80,443} divert-packet port 989 no state
pass in quick on em0 inet proto tcp from <zapret-user> port {80,443} no state
pass out quick on em0 inet proto tcp to <zapret-user> port {80,443} divert-packet port 989 no state
pass in quick on em0 inet proto tcp from <zapret> port {80,443} flags SA/SA divert-packet port 989 no state
pass in quick on em0 inet proto tcp from <zapret> port {80,443} no state
pass out quick on em0 inet proto tcp to <zapret> port {80,443} divert-packet port 989 no state
pass in quick on em0 inet proto tcp from <zapret-user> port {80,443} no state
pass out quick on em0 inet proto tcp to <zapret-user> port {80,443} divert-packet port 989 no state
table <zapret6> file "/opt/zapret/ipset/zapret-ip6.txt"
table <zapret6-user> file "/opt/zapret/ipset/zapret-ip-user6.txt"
table <nozapret6> file "/opt/zapret/ipset/zapret-ip-exclude6.txt"
pass out quick on em0 inet6 proto tcp to <nozapret6> port {80,443}
pass in quick on em0 inet6 proto tcp from <zapret6> port {80,443} no state
pass in quick on em0 inet6 proto tcp from <zapret6> port {80,443} flags SA/SA divert-packet port 989 no state
pass in quick on em0 inet6 proto tcp from <zapret6> port {80,443} no state
pass out quick on em0 inet6 proto tcp to <zapret6> port {80,443} divert-packet port 989 no state
pass in quick on em0 inet6 proto tcp from <zapret6-user> port {80,443} no state
pass in quick on em0 inet6 proto tcp from <zapret6-user> port {80,443} no state
pass out quick on em0 inet6 proto tcp to <zapret6-user> port {80,443} divert-packet port 989 no state
```