similar to: IPSec VPNs: to gif or not to gif

I've been using ipfw for a while to create a router with NAT and packet filtering, but have never combined it with stateful filtering, instead using things like "established" to accept incoming TCP packets which are part of a conversation initiated from the "inside". I'd like to move to using keep-state/check-state to get tighter filtering and also to allow outgoing

Hi! I'm trying to increase security on my FreeBSD 4.8 firewall/DSL router/VPN router. My problem is with firewalling the VPN part. I'm using a tunnel to a RedHat 7.1 box running FreeS/WAN. This tunnel allows traffic from my internal net (172.17.0.0/24) to that box only: spdadd 172.17.0.0/24 $REDHAT/32 any -P out ipsec esp/tunnel/$MYADDR-$REDHAT/unique; spdadd $REDHAT/32 172.17.0.0/24

> -----Original Message----- > From: Greg Panula [mailto:greg.panula@dolaninformation.com] > Sent: 12 May 2003 11:10 > To: Matthew Braithwaite > Cc: stable@freebsd.org > Subject: Re: iHEADS UP: ipsec packet filtering change > > You don't really need the gif tunnels for ipsec. Gif is more geared > towards ipv4 <=> ipv6 type tunnels. A few of ipsec

[ -netters, please Cc me or security@ with replies. ] I'm running into trouble integrating dynamic racoon-based IPSec into a network with ipfw and natd. I need to be able to allow VPN access from any address from authenticated clients. I've got the dynamic VPN working, with racoon negotiating SAs and installing SPs, but the problem is that I can't tell whether an incoming packet on

heya i've been using freebsd's ipfw for quite a while and recently on a new server i've got this issue with ipfw that i can't understand ... something is wrong ... 01000 8042 1947866 allow ip from any to any via fxp0 01010 0 0 allow ip from any to any via lo0 01014 9886 4170269 divert 8668 ip from any to any in via vr0 01015 0 0 check-state 01130 14679 5695969 skipto 1800 ip from

Hi all, First of all, I have spent a lot of time reading up on it. Anyway, I live in a shared accomodation with 2 roommates and a landlord and we share a cable internet connection. It is 2Mbit/400Kbit connection. Sometimes when one of us is downloading a song through Kazaa or a new Linux or FreeBSD iso, the bandwidth gets hogged and other users can't get through. I was trying to configure

----- Forwarded message from John <strgout@mail.unixjunkie.com> ----- Date: Mon, 15 Dec 2003 17:58:15 -0600 From: John <strgout@mail.unixjunkie.com> To: freebsd-stable@freebsd.org Subject: interface bonding User-Agent: Mutt/1.4i Is there any way to bond sniffer interfaces? I've read a little on netgraph and it seems like i maybe able to use that but i'm not sure how to go

Hi everyone, I wrote up a post on the FreeBSD forums about the issue I am having. It's rather long so I am providing a link to it here: http://forums.freebsd.org/showthread.php?t=39595 In summary, it seems that when the packets are routed in to the gateway from local network hosts, the src and dst addresses are changed to the public IPs of the tunnel -- at least from the perspective of the

Hi all I am trying to get rid of strings: kernel: Connection attempt to UDP FREEBSD_IP:port from DNSSERVER_IP:53 on my console and in log file I understand that those are replies on DNS queries that for some reason took too long time to be answered. I do not want to turn off the "log in vain" feature. As these strings fill up my log I am afraid to miss some sensitive messages (e.g.

hi i have a problem with my icmp, i have a router that performs nat. i cannot ping to internet hosts from more than one stations situated behind NAT at once. if i want to ping from another station i have to stop the ping that was initiated from the first host, and after a few seconds i can ping from another station.i've checked firewll and i have no ipfw rules that could stop icmp traffic.

Motherboard ASUS CUSL2-C with 815EP chipset and two Intel 82559 Pro/100 Ethernet cards exibits the following. dmesg reports usual text only a few seconds after reboot. Later it displays a single line with a fragment of ipfw log, e.g. 167 213.131.11.152 in via fxp0 which seems to change with each new activity of ipfw. Files /var/log/dmesg.today and /var/log/dmesg.yesterday rotate daily as usual

Hello, I have configured jail for users with sshd ftpd and auth. I started this jail on IP 127.0.0.10(there is an alias on lo0 interface), there was not any bigger problem to start it. But i have a problem with internet in this jail. I can log in to this jail through ssh or ftpd but i can't connect to the internet. I try to set up some kind of nat but it doesn't work. Can anybody help me

I have a FreeBSD box acting as a firewall and NAT gateway I would like to set it up to transparently pass IPSec packets -- I have an IPSec VPN client running on another machine, connecting to a remote network. Is there a way to do this? I can't find any hints in the man pages.

does anyone what is the ipfw equivalent line for this one? rdr fxp0 external_ip_addres/32 port 69 -> 192.168.66.3 port 69 udp i use a tftpd server behind a nat and i want to redirect all trafic coming from internet on port 69 to the tftpd server 10x for help __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around

I've spent the past four days or so updating machines here to 4.8/9-stable via cvsup, and have done a complete make buildworld/kernel on each machine (some SMP, some single processor). It seems something is broken with the latest fxp driver, on each machine (different mobos and hardware configs) heavy network traffic with fxp NICs causes timeouts and random kernel panics. First machine to

Did cvsup on a machine that does just mail processing (well, a lot of spam scanning) and it crashed not too much later. This kernel does not include MFC src/sys/kern/sys_process.c revisions 1.111 and 1.112: Use kmem_alloc_nofault() rather than kmem_alloc_pageable() in procfs_rwmem(). Use vm_page_hold() in place of vm_page_wire() since the page can be freed. Don't hold extra

On Sun, 23 Feb 2003 09:47:05 -0800, "Sam Leffler" <sam@errno.com> said: > >> Add a new config option IPSEC_FILTERGIF to control whether or not >> packets coming out of a GIF tunnel are re-processed by ipfw, >> et. al. By default they are not reprocessed. With the option they >> are. > > This may affect your ipfw/ipf rules. If you are happy with

Dear W.D. Do you understand that by adding the rules into kernel space numbered from zero to sixty five thousand five hundred thirty four you may alter the behavior of the rule number sixty five thousand five hundred thirty five can you please define and list the goals you are trying to achieve by altering default rule in the terms you can both explain and understand. ----- Original Message

ei tuka imam edin pf conf obache pravi mnogo nomera, kato se pusne parvoto koeto e dropva paketi, timeoutva po serverite i t.n.. i speed-a e mnogo baven, vijte ako nqkoi moje da otkrie generalna greshka da reply :) vapreki che ne e freebsd-specific :P ne sym go pisal az a i ne sam mnogo mnogo zapoznat s pf zatova ako nqkoi moje da pomogne e dobre doshyl :) btw moje i neshto ot tia opcii kato set

Hi all I've very big problem with my nfsd server. I'm running FreeBSD-stable and sometime (one time/week) i've this kind of message on the console : bge0 watchdog timeout problems fxp1 watchdog timeout problems and all my network card is down. Nothing can make the network card work again (only reboot working). There are only one service I need on this server and