Need to block vpn/proxies

scorpoin

Greetings to community,

I’ve configured pfblocker-ng in pfsense 2.5.0 version . Blocked many social networking, streaming and some other categories as well it is working fine , but some users installed vpn app in there system / phones to bypass that restriction. I’ve installed snort and enable appID as well. When I enable block offender it start to block every one in network . I’ve added my system ip into passlist to avoid blocking by snort rules selected as below

emerging-scan.rules <== ET open
snort_indicator-scan.rules <=== ET_text
vpn_tunnel <== appID

Home Net : seletected the default
and Which IP to block set to : Dst

My only goal with snort is to block vpn tunnels , I know it wont work out 100% but it will be fine to save some of my bandwidth .

Regards

Gertjan

Something like https://github.com/ejrv/VPNs ? I guess pfBlockerNG-devel could use the URL as a feed ( https://github.com/ejrv/VPNs/blob/master/vpn-ipv4.txt ).

bmeeks

@scorpoin said in Need to block vpn/proxies:

Greetings to community,

I’ve configured pfblocker-ng in pfsense 2.5.0 version . Blocked many social networking, streaming and some other categories as well it is working fine , but some users installed vpn app in there system / phones to bypass that restriction. I’ve installed snort and enable appID as well. When I enable block offender it start to block every one in network . I’ve added my system ip into passlist to avoid blocking by snort rules selected as below

emerging-scan.rules <== ET open
snort_indicator-scan.rules <=== ET_text
vpn_tunnel <== appID

Home Net : seletected the default
and Which IP to block set to : Dst

My only goal with snort is to block vpn tunnels , I know it wont work out 100% but it will be fine to save some of my bandwidth .

Regards

If you are using Snort in the pfSense-2.5 DEVEL snapshots, then you have access to its Inline IPS Mode. This will work much better for OpenAppID than Legacy Blocking Mode. Legacy Blocking Mode blocks all traffic to an IP once any alert for that IP is triggered. This is not always optimal. Inline IPS Mode will selectively drop (or block) only traffic matching a DROP rule.

So if your NIC hardware supports netmap operation, then switch to Inline IPS Mode. There is a Sticky Post at the top of this forum describing how that works. Note that when using the Inline IPS Mode you will need to use the features on the SID MGMT tab to change selected rules to DROP from their default ALERT action in order to actually block or drop traffic.