similar to: How to monitoring activity on a card?

Does anyone know of a way to rate limit ssh connections from an IP address ? We are starting to see more and more brute force attempts to guess simple passwords "/usr/sbin/inetd -wWl -C 10" is nice for slowing down attempts to services launched via inetd. Is there an equiv method for doing this to sshd? Running from inetd has some issues supposedly. ---Mike

Hi, Is there a security problem with ssh that I've missed??? Ik keep getting these hords of: Failed password for root from 69.242.5.195 port 39239 ssh2 with all kinds of different source addresses. They have a shot or 15 and then they are of again, but a little later on they're back and keep clogging my logs. Is there a "easy" way of getting these ip-numbers added to

I have a grown list of IPs that I am "deny ip from ###.### to any". Infected machines, hackers, etc.. Is there a way to have this list outside of rc.firewall and just read it in?

Hi, I want to see bandwidth every ip address in the local network that passing my linux gateway in the console, may be it''s similar like mrtg (web based version) It''s possible ? Best regards, >--<Kristiadi Himawan>--<

Does anyone have any recommendations for network monitoring systems that work with CentOS 3 or 4? thanks

Hello, last night, my chkrootkit crontab returned an alarm message : > Checking `lkm'... You have 1 process hidden for readdir command > You have 2 process hidden for ps command > Warning: Possible LKM Trojan installed Some research on google make me think it's probably a false positive. I tried few things : re-launching chkrootkit : "Checking `lkm'...

I've read about securelevel in the mailing list archive, and found some pitfalls (and seems to me to be discarded soon). But According to me, the following configuration should offer a good security: - mount root fs read only at boot; - set securelevel to 3; - do not permit to unmount/remount roots fs read-write (now it is possible by means of "mount -uw /"); - the only way to make

Hi, I am using FreeBSD 8.2 and went to add 4 new disks today to expand my offsite storage. All was working fine for about 20min and then the new drive cage started to fail. Silly me for assuming new hardware would be fine :( The new drive cage started to fail, it hung the server and the box rebooted. After it rebooted, the entire pool is gone and in the state below. I had only written a few

Hi, > On Sat, Nov 20, 2004 at 01:32:15PM -0500, Francisco Reyes wrote: >> I have a grown list of IPs that I am "deny ip from ###.### to any". Infected machines, hackers, etc.. >> >> Is there a way to have this list outside of rc.firewall and just read it in? > from man ipfw LOOKUP TABLES Lookup tables are useful to handle large sparse address sets, typically

Hi all, i have a problem with 2 peers conecting to an asterisk machine, both are conected behind nat without any port mapping in the router, and the * is conected behind other nat with the port 4569 mapped to it address, the problem is: when a peer register to the asterisk the other cant register and viceversa, only gets registration the first one, im using firefly and a hardphone from wuchuan,

Hello, Freebsd-security. I'm grepping all sources for programs, which support audit and found strange thing: find . -name '*.c*' -print | \ grep -v -E '^./(sys|contrib/openbsm|tools/regression)' | \ xargs grep -E "\<(audit|au_)" shows, that only login(1), su(1), id(1) and sshd(1) uses audit. And even sshd(8) raise question: it doesn't call

On a rather full customer web server, I am trying to track down whose web site script is trying to make outbound network connections when they should not be. In /etc/security/audit_control, I added to the flags line dir:/var/audit flags:lo,aa,-nt minfree:5 to log failed network connection. When I try an make an outbound connection to something that is blocked in pf, it seems to sometimes work.

Hi. On my FreeBSD 4.8 configured IPFW2+IPF+IPNAT and I use them all: - IPFW - traffic accounting, shaping, balancing and filtering; - IPFilter - policy routing; - IPNAT - masquerading. I want to know, how IP-packets flow through all of this components? What's the path? incoming: IPFW Layer2 -> IPFW&Dummynet -> IPNAT -> IPFilter ? outgoing: IPFW Layer2 ->

Hi, I'm using kernel FreeBSD 10.0-BETA3 #2 r257635 kernel. I am trying to add port number to ipfw tables. But there is something strange : Problem is easily repeatable. #ipfw table 1 flush #ipfw table 1 add 4899 #ipfw table 1 list ::/0 0 #ipfw table 1 flush #ipfw table 1 add 10.2.3.01 ( not 10.0.0.1, the last 1 has 0 as prefix ) #ipfw table 1 list ::/0 0 #ipfw table 1 delete ::/0

I'm forwarding this to security@, as I'm getting no replies on ipfw@. Hope it's relevant enough for you :( ---Original Message----- From: owner-freebsd-ipfw@freebsd.org [mailto:owner-freebsd-ipfw@freebsd.org] On Behalf Of Erik Paulsen Skålerud Sent: Wednesday, May 28, 2003 1:02 AM To: ipfw@freebsd.org Subject: Question about logging. Sorry for asking this, It's probably been

Hi, Two quick questions that I can't seem to find answers for using google. 1) is is possible to listen outside an ipfw firewall - that is have ethereal record the packets before ipfw starts dropping them? If so how? 2) Is there an api to ipfw that will let me manipulate rules, query stats etc? I need something faster than running the command line binary? Thanks John

Am I correct in assuming that if I do a: make OPENSSL_OVERWRITE_BASE=yes install clean in /usr/ports/security/openssl ( after updating my ports tree ) that the port will overwrite the base openssl, thus not requiring the subsequent patch and recompile of the OS to patch this Vulnerability? Dana

Hi all: I have strange probelm with rc.conf. I set up ipfw (compiled into kernel) on freebsd-5.4 and it doesn't seem to load ipfw rulesets (it uses default ruleset 65335 locking out everything). I have to do "sh /etc/ipfw.rules" in order to load the rulesets, once I did that, I can access the box from remote locations here is my rc.conf: host# more /etc/rc.conf

Hi, I am using IPFW on FreeBSD 4.11 I am facing two problems: - SSH sessions timeout after a while - When I run "/sbin/ipfw -q -f flush" in the rules script all connection get reset (and I am thrown out of the box). Is this standard functioning of ipfw or do I need to change any configuration? Thanks, Siddhartha

Dear All. I want to use 'not' for 2 addresses (for both) in ipfw2 rule. The only way that looks like what I need is # ipfw add count from IP1 to not IP2,IP3 But does this rule indeed makes what I want? Does it count all packets destined to addresses other then IP2 AND IP3?! No other syntax works. For example more logically correct not IP2 AND not IP3 or even not { IP2 or IP3 } are