Source note · SIP scanning and telephony denial of service
The fail2ban Asterisk filter also matches Asterisk security events InvalidAccountID, ChallengeResponseFailed, InvalidPassword and FailedACL and takes the remote IP from them.
Checked 2026-09-25
- Vendor
- fail2ban project
- Product
- fail2ban asterisk filter
- Subsystem
- Log indicators
- Deployment
- on-premises
- Region
- not restricted
- Release range
- master branch as of 2026-09-25
- Checked
- 2026-09-25
Sources
- fail2ban/config/filter.d/asterisk.conf — fail2ban project · tier 3 vendor-maintained repositories · config/filter.d/asterisk.conf, security event failregex
Cite this note
APA
WarmTransfer. (2026, September 25). SIP scanning and telephony denial of service: source note sip-scanning-tdos-fail2ban-security-events. WarmTransfer. https://warmtransfer.net/knowledge/claims/sip-scanning-tdos-fail2ban-security-events
BibTeX
@misc{warmtransfer-claim-sip-scanning-tdos-fail2ban-security-events,
title = {SIP scanning and telephony denial of service: source note sip-scanning-tdos-fail2ban-security-events},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/sip-scanning-tdos-fail2ban-security-events},
note = {Source note sip-scanning-tdos-fail2ban-security-events, checked 2026-09-25}
}