Disabling Port Forward

[denningsrogue]

First, thanks for taking the time to consider my issue.

I am  using pfSense 2.1.5 and ssh'ing through the internet from my downtown office.

When I ssh, I get the password prompt and can log in.  The reason I want to close the port is that I am being barraged by brute force attacks on my gateway.  Those are continuing.

Thanks again.

I'll post the rules and port forwards in follow up posts.

[denningsrogue]

Here is the port forward page showing the forward disabled.


[denningsrogue]

Here is the port forward entry.


[denningsrogue]

Here are the rules.


[denningsrogue]

Here is the specific rule.

Thanks again for your help.


[johnpoz]

did you enable/disable it again..  What your saying is just not possible to be honest..

Can you post up your debug rules ones you disable the rule..  So I have a ssh rule that I keep disabled… I have enabled it and this is what is in my /tmp/rules.debug for port 22, I xx out some of my wan IP and isp gateway

[2.1.5-RELEASE][root@pfsense.local.lan]/root(3): cat /tmp/rules.debug | grep 22
rdr on vmx3f0 proto tcp from ! $pfBlockerTopSpammers to 24.13.xx.x port 22 -> 192.168.1.7
block in log quick proto tcp from <sshlockout>to (self) port 22 label "sshlockout"
pass in quick on vmx3f1 proto tcp from any to (vmx3f1) port { 80 22 } keep state label "anti-lockout rule"
pass  in log  quick  on $WAN reply-to ( vmx3f0 24.13.xx.xx ) inet proto tcp  from ! $pfBlockerTopSpammers to 192.168.1.7 port 22 flags S/SA keep state  label "USER_RULE: NAT "

So I then disabled it, leaving the firewall rule enabled still and then notice my rules.debug grep for 22

[2.1.5-RELEASE][root@pfsense.local.lan]/root(4): cat /tmp/rules.debug | grep 22
block in log quick proto tcp from <sshlockout>to (self) port 22 label "sshlockout"
pass in quick on vmx3f1 proto tcp from any to (vmx3f1) port { 80 22 } keep state label "anti-lockout rule"
pass  in log  quick  on $WAN reply-to ( vmx3f0 24.13.xx.xx ) inet proto tcp  from ! $pfBlockerTopSpammers to 192.168.1.7 port 22 flags S/SA keep state  label "USER_RULE: NAT "

Notice the forward is gone..

And if I check it from outside - blocked.  So lets take a look at your cat /tmp/rules.debug | grep 22

</sshlockout></sshlockout>

[denningsrogue]

So here is what I have done.

enabled the ssh forward and rule
hit save
disabled the rule
hit save
reset the states table

here is the output from cat /tmp/rules.debug | grep 22

rdr on em0 proto tcp from any to 216.xxx.xxx.xxx port 22 -> $miniserver
block in log quick proto tcp from <sshlockout>to (self) port 22 label "sshlockout"
pass in quick on em1 proto tcp from any to (em1) port { 443 80 22 } keep state label "anti-lockout rule"</sshlockout>

[johnpoz]

so you disabled the port forward or just the firewall rule?

Because from your rules.debug the port forward is still there, but there is no firewall rule.

You should not be able to access in that way.. Do you have any firewall rules in your floating?  Something that is maybe allowing all and since you have the forward still it would be allowed?

[denningsrogue]

I disabled the rule but not the forward.

[denningsrogue]

Here is a screen shot showing all my rules (other than those related to pfblocker)


[denningsrogue]

johnpoz

I don't know what you mean by "Do you have any firewall rules in your floating?".

[denningsrogue]

Well I've tried just about everything I can think of.  I deleted both the forward and the rule.  When I conduct a port scan against the public IP, port 22 still shows as open.  Any suggestions would be welcomed.

[denningsrogue]

Is there something i can do from the command line?

[Derelict]

There's another rule somewhere passing that traffic.

[johnpoz]

looking in  your floating tab – are there rules there. These are looked at first before any other rules on specific tabs.

Post up your rules.debug file.  Seems to me your not even using pfsense to access this IP your sshing too.

Sniff on your wan and lan interfaces when you do this access - you actually see this traffic passthru pfsense?  You actually see a state for this connection?

[denningsrogue]

No floating rules. Here's a screen shot of the tab.

[Screen Shot 2014-10-18 at 06.36.56.png](/public/imported_attachments/1/Screen Shot 2014-10-18 at 06.36.56.png)

[johnpoz]

Yeah that image is not valid.  So show us this traffic going through pfsense with some simple sniffs, and post up your rules.debug..

What does that grep show for 22, as we dig before after you deleted the rules..  There is just no rules showing this should work, so traffic must not be going through pfsense.

[denningsrogue]

Here is the debug file.

rules.debug.txt

[denningsrogue]

I have no idea how the traffic could go any where but through pfSense.  The box has 2 NICS. One connected to the outside world and one to the inside.  There is no other software running on the box – its not a virtual implementation.  I have to take my son to a volleyball tournament right now.  I'll run some sniffs when I get back this afternoon.

Again, thank you so much for all your efforts.  I really appreciate it.

[johnpoz]

Thought you said you deleted the rule??

NAT Inbound Redirects

rdr on em0 proto tcp from any to 216.xxx.xxx.xxx port 22 -> $miniserver

Well being able to hit ssh, you didn't really hide your IP very well - sorry my curiosity got the better of me.  Pretty easy with a /29 mask

So yup 22 is open, and I see the 311 and 625

PORT    STATE  SERVICE
22/tcp  open  ssh
311/tcp  open  asip-webadmin
625/tcp  open  apple-xsrvr-admin

Again you say you deleted your port forward, but its clearly still there…  That needs to be removed..

Also what does miniserver resolve to in your alias?  I personally not a fan of using them in rules where its a single IP..  But you need to get rid of the port forward rule that is still in there.

So do you have UPnP enabled?

UPnPd rdr anchor

rdr-anchor "miniupnpd"

Could this 10.0.1.20 box be opening up the rule, and since seems your nat is still listed?  I am wondering if your rule is also there just not in debug.

Take a look at actual live rules with

pfctl -sa, this will give us everything.  Send it to me PM, or PM me and will send you my personal email address, so your not posting that public.

edit2:  so you have a /29 -- where are the other publics? being used?

how exactly are you connected to the internet??  This is very strange - doing a traceroute to you

13  ler2-axia-ge.yyc.platinum.ca (69.31.193.254)  81.638 ms  81.520 ms  81.319 ms
14  10.17.3.6 (10.17.3.6)  76.219 ms  83.418 ms  79.970 ms
15  10.17.2.6 (10.17.2.6)  106.304 ms  106.985 ms  96.545 ms

How can there be 10.x addresses in the trace from me to you?? I can say I have never seen such a thing before!!