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bsd: pfsense tpws info

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bol-van 2022-01-23 18:27:38 +03:00
parent f5537666bc
commit 0f55960460
2 changed files with 94 additions and 2 deletions
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47
docs/bsd.eng.md
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@ -201,11 +201,56 @@ sysctl net.inet.ip.pfil.inbound=ipfw,pf
sysctl net.inet6.ip6.pfil.outbound=ipfw,pf sysctl net.inet6.ip6.pfil.outbound=ipfw,pf
sysctl net.inet6.ip6.pfil.inbound=ipfw,pf sysctl net.inet6.ip6.pfil.inbound=ipfw,pf
ipfw delete 100 ipfw delete 100
ipfw add 100 divert 989 tcp from any to any 80,443 out not diverted not sockarg ipfw add 100 divert 989 tcp from any to any 80,443 out not diverted not sockarg xmit em0
pkill ^dvtws$ pkill ^dvtws$
dvtws --daemon --port 989 --dpi-desync=split2 dvtws --daemon --port 989 --dpi-desync=split2
``` ```
I could not make tpws work from ipfw. Looks like there's some conflict between two firewalls.
Only PF redirection works. PF does not allow to freely add and delete rules. Only anchors can be reloaded.
To make an anchor work it must be referred from the main ruleset. But its managed by pfsense scripts.
One possible solution would be to modify '/etc/inc/filter.inc' as follows :
```
$natrules .= "# TFTP proxy\n";
/* MOD */
$natrules .= "rdr-anchor \"zapret/*\"\n";
$natrules .= "rdr-anchor \"tftp-proxy/*\"\n";
```
Write the anchor code to '/etc/zapret.anchor':
```
rdr pass on em1 inet proto tcp to port {80,443} -> 127.0.0.1 port 988
rdr pass on em1 inet6 proto tcp to port {80,443} -> fe80::20c:29ff:5ae3:4821 port 988
```
Autostart '/usr/local/etc/rc.d/zapret.sh' :
```
pfctl -a zapret -f /etc/zapret.anchor
pkill ^tpws_pf$
tpws_pf --daemon --port=988 --split-http-req=method --split-pos=2
```
Note that the special tpws version is used which supports PF.
After reboot check that anchor is created and referred from the main ruleset :
```
[root@pfSense /]# pfctl -s nat
no nat proto carp all
nat-anchor "natearly/*" all
nat-anchor "natrules/*" all
...................
no rdr proto carp all
rdr-anchor "zapret/*" all
rdr-anchor "tftp-proxy/*" all
rdr-anchor "miniupnpd" all
[root@pfSense /]# pfctl -s nat -a zapret
rdr pass on em1 inet proto tcp from any to any port = http -> 127.0.0.1 port 988
rdr pass on em1 inet proto tcp from any to any port = https -> 127.0.0.1 port 988
rdr pass on em1 inet6 proto tcp from any to any port = http -> fe80::20c:29ff:5ae3:4821 port 988
rdr pass on em1 inet6 proto tcp from any to any port = https -> fe80::20c:29ff:5ae3:4821 port 988
```
## OpenBSD ## OpenBSD

49
docs/bsd.txt
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@ -198,11 +198,58 @@ sysctl net.inet.ip.pfil.inbound=ipfw,pf
sysctl net.inet6.ip6.pfil.outbound=ipfw,pf sysctl net.inet6.ip6.pfil.outbound=ipfw,pf
sysctl net.inet6.ip6.pfil.inbound=ipfw,pf sysctl net.inet6.ip6.pfil.inbound=ipfw,pf
ipfw delete 100 ipfw delete 100
ipfw add 100 divert 989 tcp from any to any 80,443 out not diverted not sockarg ipfw add 100 divert 989 tcp from any to any 80,443 out not diverted not sockarg xmit em0
pkill ^dvtws$ pkill ^dvtws$
dvtws --daemon --port 989 --dpi-desync=split2 dvtws --daemon --port 989 --dpi-desync=split2
----------- -----------
Что касается tpws, то видимо имеется некоторый конфликт двух фаерволов, и правила fwd в ipfw не работают.
Работает перенаправление средствами pf как описано в разделе по FreeBSD.
В pf можно изменять правила только целыми блоками - якорями (anchors). Нельзя просто так добавить или удалить что-то.
Но чтобы какой-то anchor был обработан, на него должна быть ссылка из основного набора правил.
Его трогать нельзя, иначе порушится весь фаервол.
Поэтому придется править код скриптов pfsense. Поправьте /etc/inc/filter.inc следующим образом :
-----------
$natrules .= "# TFTP proxy\n";
/* MOD */
$natrules .= "rdr-anchor \"zapret/*\"\n";
$natrules .= "rdr-anchor \"tftp-proxy/*\"\n";
-----------
Напишите файл с содержимым anchor-а (например, /etc/zapret.anchor):
-----------
rdr pass on em1 inet proto tcp to port {80,443} -> 127.0.0.1 port 988
rdr pass on em1 inet6 proto tcp to port {80,443} -> fe80::20c:29ff:5ae3:4821 port 988
-----------
Добавьте в автозапуск /usr/local/etc/rc.d/zapret.sh :
-----------
pfctl -a zapret -f /etc/zapret.anchor
pkill ^tpws_pf$
tpws_pf --daemon --port=988 --split-http-req=method --split-pos=2
-----------
Обратите внимание, что запускается специальная версия tpws с поддежкой pf. Обычный tpws не работает с PF.
После перезагрузки проверьте, что правила создались :
-----------
[root@pfSense /]# pfctl -s nat
no nat proto carp all
nat-anchor "natearly/*" all
nat-anchor "natrules/*" all
...................
no rdr proto carp all
rdr-anchor "zapret/*" all
rdr-anchor "tftp-proxy/*" all
rdr-anchor "miniupnpd" all
[root@pfSense /]# pfctl -s nat -a zapret
rdr pass on em1 inet proto tcp from any to any port = http -> 127.0.0.1 port 988
rdr pass on em1 inet proto tcp from any to any port = https -> 127.0.0.1 port 988
rdr pass on em1 inet6 proto tcp from any to any port = http -> fe80::20c:29ff:5ae3:4821 port 988
rdr pass on em1 inet6 proto tcp from any to any port = https -> fe80::20c:29ff:5ae3:4821 port 988
-----------
OpenBSD OpenBSD
------- -------