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Questions tagged [ipfw]

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49 views

Does not write logs into /var/log/security after I modified this file

I run a script that modifies /var/log/security. If someone tries to connect to my server via ssh, this event writes into /var/log/security.( I have set firewall_enable="YES" and firewall_logging="...
0
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1answer
74 views

Incomplete documentation for FreeBSD ipfw

When I see the official documentation of ipfw or the man pages it seems that it is sometimes incomplete. Specifically, there are a lot of options like, firewall_myservices firewall_allowservices ...
2
votes
2answers
520 views

Firewall ipfw in FreeBSD

I have a doubt respect to the functionality of the IPFW firewall in FreeBSD. My scenario is the following: All these machines are running FreeBSD, and all of them are virtual machines. The thing is ...
2
votes
1answer
503 views

working netgraph configuration for ipfw and ng_bpf on FreeBSD

I'm trying to get a raw BPF bytecode packet filter working on FreeBSD using a combination of ipfw with ng_ipfw, ng_bpf and ng_tag. However none of the documentation or presentations I can find ...
1
vote
1answer
376 views

FreeBSD equivalent of Linux's “xt_bpf” filtering module

In Linux 3.9 there's a packet filter module called xt_bpf that can take compiled BPF bytecode and use it directly in an iptables rule. Is there any equivalent for FreeBSD's ipfw system?
0
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1answer
384 views

No buffer space available when using Dummynet in FreeBSD 9.3

As soon as the Dummynet Kernel module is loaded and the appropriate ipfw add pipe 1 from localhost to localhost command is issued, I can no longer ping localhost — I receive the ping: sendto: No ...
5
votes
3answers
3k views

Restart/reload IPFW remotely via ssh without losing connection

Is it possible to restart IPFW or reload its script remotely via ssh connection without loosing current connection?
1
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0answers
3k views

Installing Dummynet on Linux Ubuntu

I'm new to Ubuntu and I'm trying to install dummynet. I cannot however find a tutorial for Ubuntu. I've tried to follow this tutorial http://goo.gl/ZzKrpk however I get an error when making a kernel ...
2
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2answers
2k views

FreeBSD ipfw keepstate vs setup keep-state

A lot of examples where people are using keep-state with setup together. For example: ipfw add 1 allow tcp from any to me 22 setup keep-state Because of setup, this rule will allow only SYN packets, ...
2
votes
2answers
271 views

quick filter of IP that's causing sendmail DOS under FreeBSD

I've got what appears to be a malicious/spam host that is overloading my Sendmail server causing it to refuse connections to other hosts. I'm overloaded by connections from one particular IP address. ...
1
vote
1answer
186 views

ipfw on Mac OS X 10.8

I'm trying to setup local transparent proxy with ipfw and squid and ran into some problems. I have a single rule 00100 fwd 127.0.0.1,3128 log tcp from any to any dst-port 80 but it either gets into ...
3
votes
1answer
362 views

IPFW Port Forwarding

This is my situation: I want to connect to an OpenVPN server from my office (we're using a proxy, only ports 80 and 443 are allowed). Server IP address is: 176.31.250.232:843 My static IP address is:...